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		                        | National Stock Number:
 5305-99-123-0131
 
 Federal Supply Class:
 5305
 
 National Item Identification Number:
 991230131
 
 Description:
 SCREW,MACHINE
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 Manufacturer Information:
 
 | 36AC3138 | U1725 | MINISTRY OF DEFENCE AIR DOMESTIC R FERENCE NUMBER USE ONLY |  | 997000318 | U9199 | MINISTRY OF DEFENCE UNITED KINGDOM NATIONAL CODIFICATION BUREAU (UKNCB)TASKING, DETAILS FOR CANCELLED NSN'S(CSC D) |  | UBS25E6 | K0378 | ROLLS-ROYCE PLC |  | UBS25E6 | K0967 | MBDA UK LTD |  | UBS25E6 | K1020 | MBDA UK LTD |  | UBS25/E6 | K5974 | ROLLS-ROYCE PLC NAVAL MARINE | 
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 Techincal Specification:
 
 | FASTENER LENGTH | 0.600 INCHES NOMINAL |  | HARDNESS RATING | 248.0 BRINELL STANDARD MINIMUM AND 302.0 BRINELL STANDARD MAXIMUM |  | HEAD HEIGHT | 0.140 INCHES MINIMUM AND 0.150 INCHES MAXIMUM |  | HEAD STYLE | HEXAGON |  | MINIMUM TENSILE STRENGTH | 123200 POUNDS PER SQUARE INCH |  | NOMINAL THREAD DIAMETER | 0.250 INCHES |  | SCREW MATERIAL DOCUMENT AND CLASSIFICATION | K7766-BS S80 NATIONAL STD/SPEC SINGLE MATERIAL RESPONSE |  | SCREW MATERIAL | STEEL |  | SPECIAL FEATURES | HEAD FINISHED |  | WIDTH BETWEEN FLATS | 0.431 INCHES MINIMUM AND 0.438 INCHES MAXIMUM |  | THREAD CLASS | 2A |  | THREAD DIRECTION | RIGHT-HAND |  | THREAD LENGTH | 0.600 INCHES NOMINAL |  | THREAD QUANTITY PER INCH | 28 |  | THREAD SERIES DESIGNATOR | UNF | 
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