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Albert Spokes filed for a U.S. patent on the swage nut in early 1958. The swage nut is descended from an older idea, the clinch nut. Clinch nuts incorporate a tubular shaft that fits through the part to be attached and is clinched or riveted in place from the opposite side.
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Self-clinching nuts are described in
National Aerospace Standard NASM45938 which supersedes military specification MIL-N-45938
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This is a popular method for adding strong, load-bearing threads to a relatively thin piece of soft sheet metal.
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on the clinching ring is not necessary for this step, but prevents the nut from rotating after installation.
70:. The inserted shank has three diameters: a main shaft which fits the hole closely, a thin smaller-diameter
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192:, Albert Spokes, "Nut with recesses to receive metal of the workpiece", issued Sept. 19, 1961
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27:. Note the narrow undercut visible just above the clinching ring on the left-hand nut.
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the surrounding material. Generally, the swage nut is made of a hard metal such as
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or by tightening a screw through the hole, causes it to plastically deform (
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clinching ring. Forcing the clinching ring into softer material, with an
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211:, Harold G Renner, "Rivetable nut", issued July 22, 1924
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Carroll Smith's Nuts, Bolts, Fasteners, and
Plumbing Handbook
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recess in the shank. This locks the nut into the hole. The
173:"MIL-N-45938: Nut, Plain, Clinch (self-clinching, round)"
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It permanently anchors itself to the sheet metal by
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23:A pair of swage nuts threaded to accept
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325:distorted thread locknut
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350:internal wrenching
345:interfering thread
37:self-clinching nut
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178:. 2 October 1984.
124:Friction drilling
66:material such as
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47:that is used on
16:Type of fastener
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60:stainless steel
45:threaded insert
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144:Smith, Carroll
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159:0-87938-406-9
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39:is a type of
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290:axial barrel
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310:castellated
86:) into the
80:arbor press
49:sheet metal
25:8-32 screws
465:Categories
415:split beam
228:US 2026757
209:US 1502399
190:US 3000420
130:References
476:Fasteners
335:frangible
119:Rivet nut
33:swage nut
320:coupling
146:(1990),
113:See also
92:knurling
76:serrated
72:undercut
68:aluminum
450:wingnut
375:locknut
370:knurled
315:clip-on
305:captive
104:History
88:annular
64:ductile
56:swaging
435:T-slot
420:square
340:insert
330:flange
295:barrel
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156:
430:T-nut
425:swage
410:split
405:speed
395:rivet
390:plate
385:nyloc
285:acorn
176:(PDF)
84:swage
445:well
440:weld
365:Keps
300:cage
154:ISBN
51:.
380:lug
360:jet
355:jam
43:or
41:nut
35:or
467::
31:A
266:e
259:t
252:v
Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.
