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National Stock Number: 5305-01-381-9870
Federal Supply Class: 5305
National Item Identification Number: 013819870
Description: SCREW,CAP,SOCKET HEAD
Detail: An externally threaded fastener whose threaded portion is of one nominal diameter. The head has an internal socket or multiple spline for use with an inserted driver. A locking feature may be incorporated in the design of the head or threads. Excludes items with bevel (conical) heads. See BOLT, INTERNAL WRENCHING. Excludes SCREW, SHOULDER; and SCREW, MACHINE.
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Manufacturer Information:
12387270-62 | 01417 | GENERAL DYNAMICS LAND SYSTEMS INC. | 12387270-62 | 19207 | U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM | 5305013819870 | A00AM | E.C.A ETABLISSEMENT CENTRAL DESAPPROVISIONNEMENTS DES FORCES ARMEE |
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Techincal Specification:
THREAD SERIES DESIGNATOR | UNC | NOMINAL THREAD DIAMETER | 0.250 INCHES | THREAD QUANTITY PER INCH | 20 | THREAD CLASS | 3A | THREAD DIRECTION | RIGHT-HAND | THREAD LENGTH | 0.900 INCHES MINIMUM AND | | 1.000 INCHES MAXIMUM | FASTENER LENGTH | 0.969 INCHES MINIMUM AND | | 1.000 INCHES MAXIMUM | MATERIAL | STEEL UNS K03104 OVERALL | MATERIAL DOCUMENT AND CLASSIFICATION | ASTM A574 ASSN STD SINGLE MATERIAL RESPONSE OVERALL | SURFACE TREATMENT | ZINC AND | | CHROMATE OVERALL | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-STD-171, FINISH 1.9.2.3, 0.0003 IN. THK MIL STD SINGLE TREATMENT RESPONSE OVERALL | COLOR | BUFF OR | | OLIVE DRAB OVERALL | HARDNESS RATING | 39.0 ROCKWELL C MINIMUM AND | | 45.0 ROCKWELL C MAXIMUM OVERALL | MINIMUM TENSILE STRENGTH | 180000 POUNDS PER SQUARE INCH | HEAD STYLE | FLAT CHAMFER | HEAD DIAMETER | 0.365 INCHES MINIMUM AND | | 0.375 INCHES MAXIMUM | HEAD HEIGHT | 0.244 INCHES MINIMUM AND | | 0.250 INCHES MAXIMUM | INTERNAL DRIVE STYLE | HEXAGON | WIDTH ACROSS FLATS | 0.1875 INCHES MINIMUM AND | | 0.1900 INCHES MAXIMUM |
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