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		                        | National Stock Number:
 5310-00-186-7510
 
 Federal Supply Class:
 5310
 
 National Item Identification Number:
 001867510
 
 Description:
 WASHER,LOCK
 
 Detail:
 A washer which is usually round with a centrally located hole. Its edges and two bearing surfaces are so designed that applied pressure brings into play the spring tension and/or frictional locking principle which materially resists any tendency toward turning. It may be made of one or two pieces
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 Manufacturer Information:
 
 | 104-3S516A | 80063 | US ARMY COMMUNICATIONS & ELECTRONICS MATERIEL READINESS COMMAND LOGISTICS ENGINEERING DIR |  | 1218-00 | 78189 | ITW SHAKEPROOF AUTOMOTIVE PRODUCTS |  | STD475 | 2B457 | LANE AVIATION CORPORATION |  | STD475 | 80254 | TEXTRON LYCOMING INC WILLIAMSPORT PLANT |  | STD475 | F1598 | COMPAGNIE FRANCE AVIATION |  | STD475 | R1120 | SATAIR A/S | 
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 Techincal Specification:
 
 | HOLE DIAMETER | 0.318 INCHES MINIMUM AND 0.333 INCHES MAXIMUM |  | MATERIAL THICKNESS | 0.036 INCHES NOMINAL |  | OUTSIDE DIAMETER | 0.593 INCHES NOMINAL |  | STYLE DESIGNATOR | FLAT INTERNAL TEETH |  | SURFACE TREATMENT |  | 
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