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the nut is threaded on, the displaced sections are elastically forced back axially to their original position, the load increasing the friction between the nut and the fastener, creating the locking action. These nuts retain their locking action at temperatures limited only by the base material, as no polymeric insert is used, and as the locking action is by elastic deformation, they can be re-used multiple times. They may look similar, but differ substantially from the
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with one or more slots cut laterally in the reduced-diameter circular top for less than half the diameter, the metal above the slot(s) being deformed downwards so that over the last one or two turns, the thread for half the diameter is "axially depitched" or displaced from its normal position. As
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The company was established in 1942, and is a branch of the Haden MacLellan engineering group. Prior to this the company was a part of B Elliott, which sold
Philidas to Haden MacLellan in 2000. Philidas manufactures automobile fasteners in both small and large-scale batches. The company's products
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There are at least two basic types, the original "Industrial" type with two slots, one on each side of the diameter but axially aligned, and the "Turret" where both slots are aligned radially, one above the other. The Turret type appears to reduce the risk of failure of the locking action due to
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are distributed on a global basis. In 2005, it was reported that the company manufactures 110 million fasteners annually. Philidas had a factory on
Monkhill Lane, Pontefract. But this closed in January 2014. Some of Philidas' clients include BMW, Jaguar, Ford and Bosch.
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because the former has a radial displacement of the deformed portion, while the
Philidas nut uses axial deflection or depitching.
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Philidas, the original and current manufacturer, is a tradename for these nuts, which were patented in 1942.
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fracture between the base of both slots, which may be a limitation of the
Industrial type.
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and components for automotive and industrial applications.
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347:"£1.6m funding deal leads to Philidas growth"
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212:Moynihan, Dan; Titley, Brian Titley (2001).
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437:Workshop Processes, Practices and Materials
406:. Tata McGraw-Hill Education. p. 270.
325:"Million pound-plus take for Star at MACH"
37:Manufacturer of automotive and industrial
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218:. Oxford University Press. p. 424.
277:. Philidaslimited.co.uk. Archived from
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300:(Editorial staff) (15 January 2000).
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349:. Insider Magazine. 22 February 2011
188:"Firm's sale brings good jobs news"
371:Parkin, David (16 February 2005).
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373:"Buy-in secures Philidas future"
323:Allcock, Andrew (13 May 2008).
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519:Companies based in Wakefield
190:. BBC News. 16 February 2005
479:. The Railway Gazette. 1946
246:McKenna, Nicki (May 2009).
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440:. Routledge. p. 187.
302:"Sale boost for B Elliott"
19:Philidas Distribution Ltd.
248:"Investing in the future"
99:) is a company based in
304:. The Engineer Magazine
28:Privately held company
434:Black, Bruce (2012).
473:"(Title unviewable)"
327:. Machinery Magazine
250:. Machinery Magazine
132:A Philidas nut is a
70:Global distribution
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168:. Company Data Rex
166:"Philidas Limited"
111:that manufactures
95:(previously named
215:Advanced Business
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447:978-1136433214
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400:Singh (2008).
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139:split beam nut
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279:the original
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128:Philidas nut
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24:Company type
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66:Area served
508:Categories
275:"Philidas"
225:0198328311
152:References
101:Pontefract
50:Pontefract
483:3 January
477:Volume 84
453:3 January
419:3 January
382:3 January
353:3 January
331:3 January
308:3 January
285:3 January
254:3 January
231:3 January
194:3 January
172:3 January
82:.philidas
34:Industry
134:locknut
119:History
109:England
75:Website
58:England
46:Founded
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60:, 1942
485:2013
455:2013
442:ISBN
421:2013
408:ISBN
384:2013
355:2013
333:2013
310:2013
287:2013
256:2013
233:2013
220:ISBN
196:2013
174:2013
113:nuts
84:.com
39:nuts
80:www
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