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National Stock Number: 5305-00-013-8325
Federal Supply Class: 5305
National Item Identification Number: 000138325
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:
138325 | 21450 | ARMY WEAPONS COMMAND ATTN AMSWE-REE-S | FF-S-86 TYPE 1 | 81348 | FEDERAL SPECIFICATIONS PROMULGATED BY GENERAL SERVICES ADMINISTRATION WASHINGTON DC |
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Techincal Specification:
FASTENER LENGTH | 1.490 INCHES MINIMUM AND 1.520 INCHES MAXIMUM | HARDNESS RATING | 36.0 ROCKWELL C MINIMUM AND 43.0 ROCKWELL C MAXIMUM OVERALL | HEAD DIAMETER | 0.801 INCHES MINIMUM AND 0.812 INCHES MAXIMUM | HEAD HEIGHT | 0.554 INCHES MINIMUM AND 0.562 INCHES MAXIMUM | HEAD STYLE | FLAT CHAMFER | INTERNAL DRIVE STYLE | HEXAGON | MATERIAL | STEEL OVERALL | NOMINAL THREAD DIAMETER | 0.562 INCHES | WIDTH ACROSS FLATS | 0.375 INCHES MINIMUM AND 0.378 INCHES MAXIMUM | THREAD CLASS | 3A | THREAD DIRECTION | RIGHT-HAND | THREAD LENGTH | 1.520 INCHES MAXIMUM | THREAD QUANTITY PER INCH | 12 | THREAD SERIES DESIGNATOR | UNC |
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