1069:
661:, Germany). INBUS IP GmbH was registered with the stated purpose of holding and licensing the trademark INBUS. In late 2015 to early 2016, the company sent out desist orders to companies using the name "Inbus" for hex keys. Hex keys with the INBUS brand are now manufactured at HaFu Werkzeugfabrik H. J. Fuhrmann GmbH, Breckerfeld, North Rhine-Westphalia, as of 2017 accounting for 7% of the company's EUR 8 million turnover. and as "Unbrako" key or wrench in Scandinavia (originally a Pennsylvania company established in 1911, in 2008 acquired by Deepak Fasteners Limited). In Italy, it is known as
508:
33:
570:
1061:
2485:
685:
1374:
626:
548:
set screw for which had to be developed special keys or wrenches for tightening or loosening the screw, was the cause of more profanity among the mechanics and machine manufacturers than any other single event that happened. I am sure that the old-timers who read this book will remember this period vividly." (These transitional growing pains echo those experienced many decades later with the adoption of the
1404:
956:
618:
526:, the latter of which were put in place with set screws. In pursuit of headless set screws with a better drive than a straight slot, Hallowell said, SPS had sourced set screws of square-socket drive from Britain, but they were very expensive. (This was only 2 years after Robertson's Canadian patent.) This cost problem drove SPS to purchase its first
540:"). The story, if any, of whether SPS's methods required licensing of Allen's 1910 patent is not addressed by Hallowell's memoir. The book does not mention which method—cold forming or linear broaching—was used by SPS in these earliest years. If the latter was used, then Allen's patent would not have been relevant.
390:
Hex keys are formed from a single piece of hard hexagonal steel rod, having blunt ends that fit snugly into similarly shaped screw sockets. The rods are bent to 90Âş, forming two arms of unequal length resembling an "L". The tool is usually held and twisted by its long arm, creating a relatively large
547:
and later in other manufacturing fields such as defense (aircraft, tanks, submarines), civilian aircraft, automobiles, bicycles, furniture and others. Concerning the dissemination of the screws and wrenches, Hallowell said "the transition from a square head set screw to a hexagon socket head hollow
495:
line of products. This account from
Hallowell does not mention the Allen patent of 1910 nor the Allen safety set screw product line. Hallowell does describe, however, the same inspiration also mentioned in connection with Allen for a wave of adoption of the hex socket head, beginning with set screws
535:
SPS found that the square hole "would not be acceptable in this country", but it seems likely that it would have to have involved licensing
Robertson's patent, which would have defeated SPS's purpose of driving down its cost for internal-wrenching screws (and may have been unavailable at any price,
530:
and make its screws in-house, which led to SPS's foray into fastener sales (for which it later became well known within the metalworking industries). Hallowell said " a while we experimented with a screw containing a square hole like the
British screw but soon found these would not be acceptable in
1389:
Some hex keys have a rounded end, allowing them to be used at an angle off-axis to the screw. This type of hex key was invented in 1964 by the
Bondhus Corporation and is manufactured by several companies. While providing access to otherwise inaccessible screws, thinning of the tool shaft to create
398:
Hex keys are designated with a socket size and are manufactured with tight tolerances. As such, they are commonly sold in kits that include a variety of sizes. Key length typically increases with size but not necessarily proportionally so. Variants on this design have the short end inserted in a
1381:
Tamper-resistant hex screws have a protruding pin in the center of the hex recess that prevents insertion of standard hex keys; as such, they can only be fastened and removed with a special key that has a recess for the pin. A similar "center pin reject" security feature is also used on
438:
screw drive was probably conceived as early as the 1860s to the 1890s, but such screws were probably not manufactured until around 1910. Rybczynski (2000) describes a flurry of patents for alternative drive types in the 1860s to the 1890s in the U.S., which are confirmed to include
488:
In his autobiography, the founder of the
Standard Pressed Steel Company (SPS; now SPS Technologies, Inc.), Howard T. Hallowell Sr. presents a version of events in which SPS developed a hex socket drive in-house, independently of Allen, circa 1911. From this came the
1390:
the rounded shape renders it weaker than the straight-shaft version, limiting the torque that can be applied; in addition, the rounded end only makes point contact with the screw as opposed to the line contact made by straight-shaft keys.
645:
such as Spain and Mexico (The "Allen" name is a registered trademark, originated by the Allen
Manufacturing Company of Hartford, Connecticut circa 1910, now owned by Apex Tool Group, LLC, which was acquired by
1480:; a hole is drilled and then the corners are broached out. This operation often leaves little telltale curled chips still attached at the bottom of the socket. These are negligible for most applications.
555:
World War II, with its unprecedented push for industrial production of every kind, is probably the event that first put most laypersons in contact with the internal-wrenching hexagon drive. (
1818:"MARYLAND METRICS - TECHNICAL INFORMATION and DATA - Hexagon sockets (DIN 912, ISO 4762, DIN 6912, DIN 7984, DIN 7991, DIN 913, 914/5/6, ISO 4026, 4027/8/9, ISO 7379, ISO 7380, K 323)"
504:
that was ubiquitous in factories of the day. The headless set screws would be less likely to catch the clothing of workers and pull them into injurious contact with the running shaft.
668:
The term "hex-head" is sometimes used to refer to this type of drive, but this use is not consistent with its more conventional use referring to external-wrenching hexagons.
543:
Hallowell said that acceptance of the internal-wrenching hexagon drive was slow at first but that it eventually caught on quite strongly. This adoption occurred first in
395:
at the tip of the short arm; it can also be held by its short arm to access screws in difficult-to-reach locations and to turn screws faster at the expense of torque.
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1925:
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1985:
561:
magazine would note in 1946 "Cap screws and setscrews with heads recessed to take hexagonal-bar wrenches are coming into increasing use.")
2347:
665:, for the company Officine Egidio Brugola (established 1926). In 1946 Egidio Brugola patented an important variant with a spiral shank.
1849:
497:
1451:
1068:
1047:
697:
449:), but he explains that these were patented but not manufactured because of the difficulties and expense of doing so at the time.
2484:
2551:
1429:
981:
2561:
399:
transverse handle, which may contain multiple keys of varying sizes that can be folded into the handle when not in use.
507:
2424:
1028:
1414:
966:
676:
Hex keys are measured across-flats (AF), which is the distance between two opposite (parallel) sides of the hexagon.
1817:
1000:
32:
2118:
642:
569:
328:
1433:
1418:
985:
970:
2520:
2387:
1064:
Illustration of the largest (left) and smallest (right) hex keys that can be used with a given hex screw (middle)
531:
this country . Then we decided to incorporate a hexagon socket into the screw ." Hallowell does not elaborate on
403:
1060:
2303:
1978:
1473:
1469:
1425:
1007:
977:
1958:
1694:
2352:
2342:
2337:
1484:
1476:. Broaching the heads with a linear broach is essentially the metalworking analog of mortising wood with a
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2417:
2377:
2367:
1793:
638:
1014:
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419:
321:
1590:
1705:
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2397:
2392:
1916:
1496:
537:
309:
304:
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268:
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258:
237:
232:
211:
206:
201:
196:
181:
176:
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155:
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129:
124:
119:
114:
109:
104:
99:
94:
89:
84:
68:
63:
48:
996:
657:, introduced in 1934 by the German company Bauer & Schaurte, in 2015 acquired by INBUS IP GmbH,
2362:
2063:
1971:
1465:
471:
design. In 1909–1910, William G. Allen also patented a method of cold-forming screw heads around a
468:
602:
The tool is cheap to manufacture, so it can be included with products requiring end-user assembly.
2474:
2123:
2028:
1551:
544:
2223:
684:
1373:
2318:
1939:
1931:
1921:
1911:
1899:
1891:
1874:
1758:
1748:
1539:
1529:
1477:
423:
2193:
1483:
Hex keys are made by imparting the hexagon cross-section to steel wire (for example, with a
1855:
2556:
2243:
2078:
1526:
Girls garage: how to use any tool, tackle any project, and build the world you want to see
557:
527:
456:
452:
415:
369:
299:
696:
2936:2014 "Assembly tools for screws and nuts—Hexagon socket screw keys", also known as
2293:
2233:
2218:
2203:
2148:
496:
and followed by cap screws. This was an industrial safety campaign, part of the larger
599:
The torque applied to the screw is constrained by the length and thickness of the key.
2540:
2440:
2308:
2283:
2268:
2198:
2168:
2143:
2138:
2113:
2098:
2093:
1021:
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511:
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384:
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2238:
2183:
2073:
2048:
2038:
2033:
1731:
647:
523:
464:
1468:, plastically deforming the metal. Other ways to generate the hex socket include
653:
In
Germany the term "INBUS" is a registered trademark, originally an acronym for
2459:
2253:
2248:
2208:
2058:
2043:
1403:
955:
658:
485:" by the Allen Manufacturing Company of Hartford, Connecticut, exist from 1910.
625:
617:
443:-wrenching square and triangle types (that is, square and triangular sockets) (
2515:
2278:
2273:
2178:
2173:
2153:
2133:
2103:
1543:
501:
1943:
1762:
584:
The contact surfaces of the screw or bolt are protected from external damage.
477:
445:
2469:
2298:
2163:
2088:
2015:
1994:
515:
482:
17:
1903:
1779:
1084:
standard B18.3-1998 "Socket Cap, Shoulder, and Set Screws (Inch Series)".
2313:
2005:
1824:
605:
Either end of the tool can be used to take advantage of reach or torque.
2228:
2083:
2053:
2010:
941:
21 mm, 22 mm, 23 mm, 24 mm, 27 mm, 29 mm, 30 mm, 32 mm, and 36 mm.
380:
2323:
2213:
2158:
2108:
1501:
392:
1464:
Hex socket screw heads are usually made by stamping the head with a
596:
The screw can be held by the key while it is inserted into its hole.
1695:
Abmahnung
Fabelhaft Werkzeug UG. ratgeberrecht.eu, 26 November 2015
2188:
2068:
1727:
1372:
1067:
1059:
683:
624:
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373:
31:
1917:
One Good Turn: A Natural
History of the Screwdriver and the Screw
1890:, Jenkintown, Pennsylvania, USA: Standard Pressed Steel Company,
2409:
1935:
1895:
1383:
549:
500:, to get headless set screws onto the pulleys and shafts of the
242:
227:
2413:
1967:
1888:
How a Farm Boy Built a
Successful Corporation: An Autobiography
422:; regardless, "Allen key" and "Allen wrench" are often seen as
1528:. Kate Bingaman-Burt. San Francisco, California. p. 110.
1397:
949:
1963:
593:
The tool allows the use of headless and recessed-head screws.
1586:
Various Tool Makers (section on Allen Manufacturing Company)
688:
Metric hex key set with sizes from 1.5 mm to 10 mm
608:
The tool can be reconditioned by grinding the worn-out end.
522:
SPS at the time was a prominent maker of shaft hangers and
1948:
Various republications (paperback, e-book, braille, etc).
1706:
Abmahnung INBUS IP GmbH.ratgeberrecht.eu, 15 January 2016
514:
advertisement for the Allen Safety Set Screw, a brand of
463:
socket in 1908, having perfected and patented a suitable
587:
There are six contact surfaces between bolt and driver.
410:" name is a registered trademark (circa 1910) of the
1745:
Build your own free-to-air (FTA) satellite TV system
2508:
2492:
2447:
641:like the UK, Australia, Canada and the U.S. and in
481:). Published advertisements for the "Allen safety
1959:Hex Keys (Allen Keys) and Bits Sockets Dimensions
1717:Inbus-SchlĂĽssel Jens Bergmann, brandeins.de, 2018
518:, in the Automobile Trade Directory, January 1913
1881:, vol. 148, no. 2, New York, NY, USA.
467:method, using the right material and the right
2425:
1979:
329:
27:Driver for hexagonal socketed bolts or screws
8:
1432:. Unsourced material may be challenged and
984:. Unsourced material may be challenged and
2432:
2418:
2410:
1986:
1972:
1964:
1774:
1772:
1570:
1556:: CS1 maint: location missing publisher (
590:Very small bolt heads can be accommodated.
336:
322:
39:
1659:
1647:
1635:
1623:
1611:
1452:Learn how and when to remove this message
1076:Hex key sizes in the U.S. are defined in
1048:Learn how and when to remove this message
655:Innensechskantschraube Bauer und Schaurte
1377:Hex keys of various sizes with ball ends
1086:
702:
1513:
276:
250:
219:
168:
137:
76:
55:
47:
1671:
1549:
1854:, Bondhus Corporation, archived from
1747:. New York: McGraw-Hill. p. 13.
692:Standard metric sizes are defined in
633:The term "hex key" is best known as "
573:Same hex key, different screw threads
7:
1886:Hallowell, Howard Thomas Sr (1951),
1519:
1517:
1430:adding citations to reliable sources
982:adding citations to reliable sources
581:The tool is simple, small and light.
1873:Burton, Walter E. (February 1946),
928:The full set of defined sizes are:
538:List of screw drives > Robertson
1732:Varumärke - UNBRAKO (solidinfo.se)
1088:Common US customary hex key sizes
25:
1487:die), then bending and shearing.
2483:
1402:
954:
935:1.5 to 5 mm in 0.5 mm increments
621:Cap head screws of various sizes
577:Some features of hex keys are:
512:Allen Manufacturing Company Inc
1:
2509:Drivetrain and bottom bracket
938:5 mm 19 mm in 1 mm increments
191:
704:Common metric hex key sizes
459:, first commercialized the
412:Allen Manufacturing Company
2578:
1743:Brewer, Dennis C. (2012).
643:Spanish-speaking countries
639:English-speaking countries
2481:
2332:
2024:
2001:
1794:"Bossard Hex socket keys"
1097:
1092:
713:
708:
368:) is a simple driver for
36:Hex keys of various sizes
2373:Machine and metalworking
2304:Tongue-and-groove pliers
1524:Pilloton, Emily (2020).
130:Phillips/Slotted
2383:Measuring and alignment
1851:Premiere ball end tools
1378:
1073:
1065:
932:0.7 mm, 0.9 mm, 1.3 mm
689:
630:
622:
574:
519:
37:
2552:Mechanical hand tools
1650:, pp. 54, 57–59.
1394:Manufacturing methods
1376:
1071:
1063:
687:
628:
620:
572:
510:
420:Hartford, Connecticut
376:that have heads with
35:
2526:Peanut butter wrench
2448:Hub, wheel, and tire
2348:Cutting and abrasive
1497:List of screw drives
1426:improve this section
978:improve this section
498:Progressive Movement
406:for "hex key", the "
402:While often used in
2562:American inventions
1593:on 30 December 2011
1089:
705:
478:U.S. patent 960,244
446:U.S. patent 161,390
43:Part of a series on
2475:Wheel truing stand
2029:Adjustable spanner
1912:Rybczynski, Witold
1379:
1087:
1074:
1066:
703:
690:
631:
629:Button head screws
623:
575:
520:
434:The idea of a hex
424:generic trademarks
187:Hex socket (Allen)
182:Robertson (square)
38:
2534:
2533:
2407:
2406:
2319:Upholstery hammer
1927:978-0-684-86729-8
1875:"Hold Everything"
1830:on 21 August 2018
1754:978-0-07-177516-8
1614:, pp. 51–52.
1583:Alloy Artifacts,
1573:, pp. 79–81.
1535:978-1-4521-6637-7
1478:mortising machine
1462:
1461:
1454:
1366:
1365:
1058:
1057:
1050:
1032:
926:
925:
545:tool and die work
536:as explained at "
346:
345:
16:(Redirected from
2569:
2487:
2434:
2427:
2420:
2411:
2194:Pencil sharpener
1988:
1981:
1974:
1965:
1947:
1907:
1882:
1860:
1859:
1858:on 19 March 2006
1846:
1840:
1839:
1837:
1835:
1829:
1823:. Archived from
1822:
1814:
1808:
1807:
1805:
1803:
1798:
1790:
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1767:
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1633:
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1621:
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1600:
1598:
1589:, archived from
1580:
1574:
1568:
1562:
1561:
1555:
1547:
1521:
1474:rotary broaching
1470:linear broaching
1457:
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1151:
1090:
1072:Security hex key
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1042:
1039:
1033:
1031:
990:
958:
950:
922:
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706:
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338:
331:
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207:12-spline flange
169:Internal polygon
138:External polygon
40:
21:
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2403:
2402:
2328:
2244:Punch down tool
2224:Plumber's snake
2020:
1997:
1992:
1955:
1928:
1910:
1885:
1879:Popular Science
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1780:"Iso 2936:2014"
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1571:Rybczynski 2000
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682:
674:
615:
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558:Popular Science
491:
490:
476:
457:Milton, Ontario
453:P. L. Robertson
444:
432:
416:Apex Tool Group
342:
28:
23:
22:
15:
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11:
5:
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2338:Types of tools
2334:
2333:
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2329:
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2316:
2311:
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2301:
2296:
2294:Tactical light
2291:
2286:
2281:
2276:
2271:
2266:
2261:
2256:
2251:
2246:
2241:
2236:
2234:Podger spanner
2231:
2226:
2221:
2219:Plumber wrench
2216:
2211:
2206:
2201:
2196:
2191:
2186:
2181:
2176:
2171:
2166:
2161:
2156:
2151:
2149:Locking pliers
2146:
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2019:
2018:
2013:
2008:
2002:
1999:
1998:
1993:
1991:
1990:
1983:
1976:
1968:
1962:
1961:
1954:
1953:External links
1951:
1950:
1949:
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1841:
1809:
1785:
1768:
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1735:
1720:
1709:
1698:
1687:
1684:M. v. Hohenhau
1676:
1674:, p. 149.
1664:
1660:Hallowell 1951
1652:
1648:Hallowell 1951
1640:
1636:Hallowell 1951
1628:
1624:Hallowell 1951
1616:
1612:Hallowell 1951
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1575:
1563:
1534:
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1511:
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1505:
1504:
1499:
1492:
1489:
1460:
1459:
1442:September 2020
1410:
1408:
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1370:
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1291:
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1248:
1236:
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1230:
1218:
1217:
1215:
1212:
1200:
1199:
1197:
1194:
1182:
1181:
1178:
1175:
1163:
1162:
1160:
1157:
1145:
1144:
1141:
1138:
1134:
1133:
1130:
1127:
1123:
1122:
1119:
1116:
1112:
1111:
1106:
1100:
1099:
1096:
1056:
1055:
962:
960:
953:
947:
944:
943:
942:
939:
936:
933:
924:
923:
912:
909:
905:
904:
902:
899:
895:
894:
892:
889:
885:
884:
882:
879:
875:
874:
872:
869:
865:
864:
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850:
846:
845:
843:
840:
836:
835:
833:
830:
826:
825:
814:
811:
807:
806:
804:
801:
797:
796:
794:
791:
787:
786:
775:
772:
768:
767:
765:
762:
758:
757:
755:
752:
748:
747:
745:
742:
738:
737:
735:
732:
728:
727:
722:
716:
715:
712:
681:
678:
673:
670:
614:
611:
610:
609:
606:
603:
600:
597:
594:
591:
588:
585:
582:
566:
563:
431:
428:
344:
343:
341:
340:
333:
326:
318:
315:
314:
313:
312:
307:
302:
297:
292:
287:
279:
278:
274:
273:
272:
271:
266:
261:
253:
252:
248:
247:
246:
245:
240:
235:
230:
222:
221:
217:
216:
215:
214:
209:
204:
199:
194:
189:
184:
179:
171:
170:
166:
165:
164:
163:
158:
153:
148:
140:
139:
135:
134:
133:
132:
127:
122:
117:
112:
107:
102:
97:
92:
87:
79:
78:
74:
73:
72:
71:
66:
58:
57:
53:
52:
45:
44:
26:
24:
14:
13:
10:
9:
6:
4:
3:
2:
2574:
2563:
2560:
2558:
2555:
2553:
2550:
2548:
2547:Bicycle tools
2545:
2544:
2542:
2527:
2524:
2522:
2519:
2517:
2514:
2513:
2511:
2507:
2501:
2498:
2497:
2495:
2491:
2486:
2476:
2473:
2471:
2468:
2466:
2463:
2461:
2458:
2456:
2453:
2452:
2450:
2446:
2442:
2441:Bicycle tools
2435:
2430:
2428:
2423:
2421:
2416:
2415:
2412:
2399:
2396:
2394:
2391:
2389:
2386:
2384:
2381:
2379:
2376:
2374:
2371:
2369:
2366:
2364:
2361:
2359:
2356:
2354:
2351:
2349:
2346:
2344:
2341:
2339:
2336:
2335:
2331:
2325:
2322:
2320:
2317:
2315:
2312:
2310:
2309:Torque wrench
2307:
2305:
2302:
2300:
2297:
2295:
2292:
2290:
2287:
2285:
2284:Stitching awl
2282:
2280:
2277:
2275:
2272:
2270:
2269:Socket wrench
2267:
2265:
2262:
2260:
2257:
2255:
2252:
2250:
2247:
2245:
2242:
2240:
2237:
2235:
2232:
2230:
2227:
2225:
2222:
2220:
2217:
2215:
2212:
2210:
2207:
2205:
2202:
2200:
2199:Persian drill
2197:
2195:
2192:
2190:
2187:
2185:
2182:
2180:
2177:
2175:
2172:
2170:
2169:Monkey wrench
2167:
2165:
2162:
2160:
2157:
2155:
2152:
2150:
2147:
2145:
2142:
2140:
2139:Impact driver
2137:
2135:
2132:
2130:
2127:
2125:
2122:
2120:
2117:
2115:
2114:Hammer tacker
2112:
2110:
2107:
2105:
2102:
2100:
2099:Glass breaker
2097:
2095:
2092:
2090:
2087:
2085:
2082:
2080:
2077:
2075:
2072:
2070:
2067:
2065:
2062:
2060:
2057:
2055:
2052:
2050:
2047:
2045:
2042:
2040:
2037:
2035:
2034:Antique tools
2032:
2030:
2027:
2026:
2023:
2017:
2014:
2012:
2009:
2007:
2004:
2003:
2000:
1996:
1989:
1984:
1982:
1977:
1975:
1970:
1969:
1966:
1960:
1957:
1956:
1952:
1945:
1941:
1937:
1933:
1929:
1923:
1919:
1918:
1913:
1909:
1905:
1901:
1897:
1893:
1889:
1884:
1880:
1876:
1871:
1870:
1866:
1857:
1853:
1852:
1845:
1842:
1826:
1819:
1813:
1810:
1795:
1789:
1786:
1781:
1775:
1773:
1769:
1764:
1760:
1756:
1750:
1746:
1739:
1736:
1733:
1729:
1724:
1721:
1718:
1713:
1710:
1707:
1702:
1699:
1696:
1691:
1688:
1685:
1680:
1677:
1673:
1668:
1665:
1662:, p. 54.
1661:
1656:
1653:
1649:
1644:
1641:
1638:, p. 52.
1637:
1632:
1629:
1626:, p. 51.
1625:
1620:
1617:
1613:
1608:
1605:
1592:
1588:
1587:
1579:
1576:
1572:
1567:
1564:
1559:
1553:
1545:
1541:
1537:
1531:
1527:
1520:
1518:
1514:
1507:
1503:
1500:
1498:
1495:
1494:
1490:
1488:
1486:
1481:
1479:
1475:
1471:
1467:
1456:
1453:
1445:
1435:
1431:
1427:
1421:
1420:
1416:
1411:This section
1409:
1405:
1400:
1399:
1393:
1391:
1387:
1385:
1375:
1368:
1362:
1359:
1348:
1347:
1343:
1340:
1329:
1328:
1325:
1322:
1311:
1310:
1307:
1304:
1293:
1292:
1289:
1286:
1275:
1274:
1270:
1267:
1256:
1255:
1252:
1249:
1238:
1237:
1234:
1231:
1220:
1219:
1216:
1213:
1202:
1201:
1198:
1195:
1184:
1183:
1179:
1176:
1165:
1164:
1161:
1158:
1147:
1146:
1142:
1139:
1136:
1135:
1131:
1128:
1125:
1124:
1120:
1117:
1114:
1113:
1107:
1102:
1101:
1091:
1085:
1083:
1079:
1070:
1062:
1052:
1049:
1041:
1030:
1027:
1023:
1020:
1016:
1013:
1009:
1006:
1002:
999: –
998:
994:
993:Find sources:
987:
983:
979:
973:
972:
968:
963:This section
961:
957:
952:
951:
945:
940:
937:
934:
931:
930:
929:
913:
910:
907:
906:
903:
900:
897:
896:
893:
890:
887:
886:
883:
880:
877:
876:
873:
870:
867:
866:
854:
851:
848:
847:
844:
841:
838:
837:
834:
831:
828:
827:
815:
812:
809:
808:
805:
802:
799:
798:
795:
792:
789:
788:
776:
773:
770:
769:
766:
763:
760:
759:
756:
753:
750:
749:
746:
743:
740:
739:
736:
733:
730:
729:
723:
718:
717:
714:US Customary
707:
701:
699:
695:
686:
679:
677:
671:
669:
666:
664:
660:
656:
651:
649:
644:
640:
636:
627:
619:
612:
607:
604:
601:
598:
595:
592:
589:
586:
583:
580:
579:
578:
571:
564:
562:
560:
559:
553:
551:
546:
541:
539:
534:
529:
528:screw machine
525:
517:
513:
509:
505:
503:
502:line shafting
499:
486:
484:
479:
474:
470:
466:
462:
458:
454:
450:
447:
442:
437:
429:
427:
425:
421:
417:
413:
409:
405:
404:generic terms
400:
396:
394:
388:
386:
382:
379:
375:
371:
367:
363:
359:
355:
351:
339:
334:
332:
327:
325:
320:
319:
317:
316:
311:
308:
306:
303:
301:
298:
296:
293:
291:
290:Spline socket
288:
286:
283:
282:
281:
280:
275:
270:
267:
265:
262:
260:
257:
256:
255:
254:
251:Three-pointed
249:
244:
243:External Torx
241:
239:
236:
234:
231:
229:
226:
225:
224:
223:
218:
213:
210:
208:
205:
203:
202:Triple-square
200:
198:
197:Double-square
195:
193:
190:
188:
185:
183:
180:
178:
175:
174:
173:
172:
167:
162:
159:
157:
154:
152:
149:
147:
144:
143:
142:
141:
136:
131:
128:
126:
123:
121:
118:
116:
113:
111:
108:
106:
103:
101:
98:
96:
93:
91:
90:French recess
88:
86:
83:
82:
81:
80:
75:
70:
67:
65:
62:
61:
60:
59:
54:
50:
46:
42:
41:
34:
30:
19:
2499:
2465:Spoke wrench
2455:Bicycle pump
2289:Strap wrench
2264:Slide hammer
2259:Sledgehammer
2184:Paint roller
2128:
2069:Caulking gun
2039:Basin wrench
1920:, Scribner,
1915:
1887:
1878:
1867:Bibliography
1856:the original
1850:
1844:
1832:. Retrieved
1825:the original
1812:
1802:24 September
1800:. Retrieved
1788:
1744:
1738:
1723:
1712:
1701:
1690:
1679:
1667:
1655:
1643:
1631:
1619:
1607:
1595:, retrieved
1591:the original
1585:
1578:
1566:
1525:
1482:
1463:
1448:
1439:
1424:Please help
1412:
1388:
1380:
1108:Substitution
1093:US Customary
1075:
1044:
1035:
1025:
1018:
1011:
1004:
992:
976:Please help
964:
946:US customary
927:
724:Substitution
691:
675:
667:
662:
654:
652:
648:Bain Capital
632:
613:Nomenclature
576:
556:
554:
542:
532:
521:
487:
472:
465:cold forming
460:
451:
440:
435:
433:
401:
397:
389:
377:
365:
362:Allen wrench
361:
357:
353:
349:
347:
305:Spanner head
192:Security hex
186:
29:
18:Allen wrench
2460:Cone wrench
2398:Woodworking
2254:Screwdriver
2249:Scratch awl
2209:Pipe wrench
2059:Breaker bar
2044:Block plane
1728:unbrako.com
1672:Burton 1946
659:Breckerfeld
220:Hexalobular
49:Screw drive
2541:Categories
2521:Chain whip
2516:Chain tool
2470:Tire lever
2279:Staple gun
2274:Spike maul
2189:Paintbrush
2179:Nut driver
2174:Multi-tool
2154:Lug wrench
2134:Hole punch
2104:Grease gun
1995:Hand tools
1597:25 January
1544:1155316269
1508:References
1103:Conversion
1008:newspapers
719:Conversion
650:in 2014).
383:recesses (
354:hex wrench
264:Tri-groove
212:Double hex
100:JIS B 1012
64:Slot drive
2299:Tire iron
2164:Mitre box
2089:Fish tape
2064:Cat's paw
2016:Workbench
1944:462234518
1763:778421711
1552:cite book
1413:does not
1038:July 2023
997:"Hex key"
965:does not
637:" in the
516:set screw
483:set screw
473:hexagonal
381:hexagonal
358:Allen key
310:Line Head
300:Pentalobe
259:Tri-point
238:Torx ttap
233:Polydrive
177:Tri-angle
77:Cruciform
2353:Forestry
2343:Cleaning
2314:Tweezers
2124:Headlamp
2006:Sawhorse
1936:00036988
1914:(2000),
1896:52001275
1834:25 April
1491:See also
1386:screws.
1369:Variants
565:Features
552:drive).
441:internal
378:internal
269:Tri-wing
161:12-point
151:Pentagon
125:Torq-set
120:Supadriv
115:Pozidriv
110:Phillips
95:ISO 8764
85:Frearson
2500:Hex key
2493:Headset
2378:Masonry
2368:Kitchen
2229:Plunger
2204:Pincers
2129:Hex key
2084:Crowbar
2079:Crimper
2054:Bradawl
2011:Toolbox
1485:drawing
1434:removed
1419:sources
1353:⁄
1334:⁄
1316:⁄
1298:⁄
1280:⁄
1261:⁄
1243:⁄
1225:⁄
1207:⁄
1189:⁄
1170:⁄
1152:⁄
1098:Metric
1022:scholar
986:removed
971:sources
918:⁄
859:⁄
820:⁄
781:⁄
663:brugola
524:collars
492:Unbrako
430:History
385:sockets
352:(also,
350:hex key
295:Quadrex
285:One-way
277:Special
105:Mortorq
56:Slotted
2557:Screws
2388:Mining
2358:Garden
2324:Wrench
2214:Pliers
2159:Mallet
2109:Hammer
2094:Gimlet
1942:
1934:
1924:
1904:521866
1902:
1894:
1761:
1751:
1542:
1532:
1502:Wrench
1360:9.525
1341:7.938
1323:6.350
1305:5.556
1287:4.763
1268:3.969
1250:3.572
1232:3.175
1214:2.778
1196:2.381
1177:1.984
1159:1.588
1140:1.270
1137:0.050
1129:0.889
1126:0.035
1118:0.711
1115:0.028
1024:
1017:
1010:
1003:
995:
911:0.748
901:0.669
891:0.551
881:0.472
871:0.394
852:0.315
842:0.236
832:0.197
813:0.157
803:0.118
793:0.098
774:0.079
764:0.059
754:0.051
744:0.035
734:0.028
709:Metric
680:Metric
672:Sizing
461:square
436:socket
393:torque
374:screws
146:Square
2393:Power
2239:Punch
2074:Clamp
2049:Brace
1828:(PDF)
1821:(PDF)
1797:(PDF)
1110:(mm)
1105:(mm)
1095:(in)
1029:JSTOR
1015:books
726:(in)
721:(in)
711:(mm)
700:911.
635:Allen
475:die (
418:) of
414:(now
408:Allen
370:bolts
366:Inbus
69:Cross
51:types
2363:Hand
2144:Jack
2119:Hawk
1940:OCLC
1932:LCCN
1922:ISBN
1900:OCLC
1892:LCCN
1836:2020
1804:2023
1759:OCLC
1749:ISBN
1599:2012
1558:link
1540:OCLC
1530:ISBN
1472:and
1417:any
1415:cite
1384:torx
1143:1.3
1132:0.9
1121:0.7
1082:ASME
1078:ANSI
1001:news
969:any
967:cite
790:2.5
761:1.5
751:1.3
741:0.9
731:0.7
550:Torx
360:and
228:Torx
1466:die
1428:by
980:by
908:19
898:17
888:14
878:12
868:10
698:DIN
694:ISO
533:why
469:die
455:of
387:).
372:or
364:or
156:Hex
2543::
1938:,
1930:,
1898:,
1877:,
1771:^
1757:.
1730:;
1554:}}
1550:{{
1538:.
1516:^
1344:8
1336:16
1300:32
1282:16
1271:4
1263:32
1245:64
1209:64
1191:32
1180:2
1172:64
1154:16
861:16
849:8
839:6
829:5
822:32
810:4
800:3
783:64
771:2
426:.
356:,
348:A
2433:e
2426:t
2419:v
1987:e
1980:t
1973:v
1946:.
1906:.
1838:.
1806:.
1782:.
1765:.
1601:.
1560:)
1546:.
1455:)
1449:(
1444:)
1440:(
1436:.
1422:.
1355:8
1351:3
1332:5
1318:4
1314:1
1296:7
1278:3
1259:5
1241:9
1227:8
1223:1
1205:7
1187:3
1168:5
1150:1
1080:/
1051:)
1045:(
1040:)
1036:(
1026:·
1019:·
1012:·
1005:·
988:.
974:.
920:4
916:3
857:5
818:5
779:5
337:e
330:t
323:v
20:)
Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.
