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National Stock Number:
5305-01-417-1982
Federal Supply Class:
5305
National Item Identification Number:
014171982
Description:
SCREW,SHOULDER
Detail:
An externally threaded fastener whose threaded portion is of one nominal diameter, No 0 (0.060 IN.) (1.5 mm) or larger. It has a round unthreaded neck or shank all or part of which is of greater diameter than the threaded portion. The head is designed to be driven with either a wrench or an inserted driver or both in sizes below No. 10 (0.190 IN.) (5 mm) nominal diameter. No. 10 (0.190 IN.) (5 mm) and larger sizes must be designed for any type of inserted driver, but may also provide for external wrenching of the head. A locking feature may be incorporated in the design of the head or threads. For items which are both shouldered and have an externally relieved body, use SCREW, EXTERNALLY RELIEVED BODY. For items with a No. 10 (0.190 IN.) (5 mm) or larger thread diameter without an inserted driver head, use BOLT, SHOULDER. Excludes BOLT, INTERNAL WRENCHING and SCREW, CAP, SOCKET HEAD.
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Manufacturer Information:
| 12387306-28 | 19207 | U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM |
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Techincal Specification:
| THREAD SERIES DESIGNATOR | UNC | | NOMINAL THREAD DIAMETER | 0.375 INCHES | | THREAD QUANTITY PER INCH | 16 | | THREAD CLASS | 3A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.595 INCHES MINIMUM AND | | 0.625 INCHES MAXIMUM | | FASTENER LENGTH | 1.350 INCHES MINIMUM AND | | 1.370 INCHES MAXIMUM | | MATERIAL | STEEL COMP 4037 OR | | STEEL COMP 4137 OR | | STEEL COMP 4140 OR | | STEEL COMP 8630 OR | | STEEL COMP 8740 OVERALL | | SURFACE TREATMENT | ZINC OR | | CHROMATE OVERALL | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | 171, 1.9.2.3 MIL STD ALL TREATMENT RESPONSES OVERALL | | COLOR | OLIVE DRAB OR | | BRONZE OVERALL | | HARDNESS RATING | 32.0 ROCKWELL C MINIMUM AND | | 43.0 ROCKWELL C MAXIMUM OVERALL | | MINIMUM TENSILE STRENGTH | 160000 POUNDS PER SQUARE INCH | | HEAD STYLE | FLAT CHAMFER | | HEAD DIAMETER | 0.729 INCHES MINIMUM AND | | 0.750 INCHES MAXIMUM | | HEAD HEIGHT | 0.302 INCHES MINIMUM AND | | 0.312 INCHES MAXIMUM | | INTERNAL DRIVE STYLE | HEXAGON | | WIDTH ACROSS FLATS | 0.250 INCHES NOMINAL | | SHOULDER SHAPE | ROUND FIRST SHOULDER | | SHOULDER DIAMETER | 0.496 INCHES MINIMUM AND | | 0.498 INCHES MAXIMUM FIRST SHOULDER | | SHOULDER LENGTH | 0.745 INCHES MINIMUM AND | | 0.755 INCHES MAXIMUM FIRST SHOULDER |
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