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National Stock Number:
5305-99-123-0129
Federal Supply Class:
5305
National Item Identification Number:
991230129
Description:
SCREW,MACHINE
Detail:
An externally threaded fastener whose threaded portion is of one nominal diameter, No 0 (0.060 in./1.5 mm) or larger, designed to be held or driven with either a wrench or an inserted driver or both (excluding internal socket or internal multiple spline types), in sizes below No. 10 (0.190 in./5 mm). No. 10 and larger sizes must have a head designed for any type inserted driver (excluding internal socket or internal multiple spline types), but may also be designed for external wrenching. A locking feature may be incorporated in the design of the head or threads. Excludes BOLT, CLEVIS; BOLT, EXTERNALLY RELIEVED BODY; SCREW, EXTERNALLY RELIEVED BODY; and SCREW, ASSEMBLED WASHER. See also, SCREW, INSTRUMENT; BOLT, MACHINE; BOLT, INTERNAL WRENCHING; and SCREW, CAP SOCKET HEAD.
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Manufacturer Information:
| 36AC3184 | U1725 | MINISTRY OF DEFENCE AIR DOMESTIC R FERENCE NUMBER USE ONLY | | 742-123-0129 | K6984 | DEFENCE LOGISTICS AGENCY | | UBS25E5 | K0378 | ROLLS-ROYCE PLC | | UBS25E5 | K0967 | MBDA UK LTD | | UBS25E5 | K1020 | MBDA UK LTD | | 997000317 | U9199 | MINISTRY OF DEFENCE UNITED KINGDOM NATIONAL CODIFICATION BUREAU (UKNCB)TASKING, DETAILS FOR CANCELLED NSN'S(CSC D) | | UBS25E5H | K0378 | ROLLS-ROYCE PLC | | UBS25E5H | K5974 | ROLLS-ROYCE PLC NAVAL MARINE | | UBS25E5 | K5974 | ROLLS-ROYCE PLC NAVAL MARINE |
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Techincal Specification:
| 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 | 0.500 INCHES NOMINAL | | THREAD QUANTITY PER INCH | 20 | | THREAD SERIES DESIGNATOR | UNF | | FASTENER LENGTH | 0.500 INCHES NOMINAL |
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