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National Stock Number:
5305-01-544-7389
Federal Supply Class:
5305
National Item Identification Number:
015447389
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:
| 12488396 | 19207 | U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM |
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Techincal Specification:
| EXTENDED WASHER THICKNESS | 0.074 INCHES MINIMUM | | FASTENER LENGTH | 0.715 INCHES MINIMUM AND 0.775 INCHES MAXIMUM | | HEAD HEIGHT | 0.285 INCHES MINIMUM AND 0.350 INCHES MAXIMUM | | HEAD STYLE | DOUBLE HEXAGON W/ HOLE | | INTERNAL DRIVE STYLE | TORX | | NOMINAL THREAD DIAMETER | 0.312 INCHES | | SCREW SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | ASTM B633 ASSN STD SINGLE TREATMENT RESPONSE | | SCREW MATERIAL DOCUMENT AND CLASSIFICATION | SAEJ-429 ASSN STD SINGLE MATERIAL RESPONSE | | SCREW MATERIAL | STEEL | | SCREW SURFACE TREATMENT | ZINC | | WIDTH BETWEEN FLATS | 0.304 INCHES MINIMUM AND 0.315 INCHES MAXIMUM | | THREAD CLASS | 3A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.475 INCHES MINIMUM | | THREAD QUANTITY PER INCH | 24 | | THREAD SERIES DESIGNATOR | UNF |
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