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National Stock Number: 5305-01-017-0091
Federal Supply Class: 5305
National Item Identification Number: 010170091
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:
9287834 | 19203 | PICATINNY ARSENAL |
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Techincal Specification:
THREAD SERIES DESIGNATOR | UNF | NOMINAL THREAD DIAMETER | 0.500 INCHES | THREAD QUANTITY PER INCH | 20 | THREAD CLASS | 2A | THREAD DIRECTION | RIGHT-HAND | THREAD LENGTH | 0.399 INCHES MINIMUM AND | | 0.499 INCHES MAXIMUM | FASTENER LENGTH | 0.750 INCHES NOMINAL | MATERIAL | STEEL OVERALL | MATERIAL DOCUMENT AND CLASSIFICATION | 66 FED STD SINGLE MATERIAL RESPONSE OVERALL | SURFACE TREATMENT | CADMIUM AND | | CHROMATE OVERALL | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416 TY 2 CL 3 FED SPEC ALL TREATMENT RESPONSES OVERALL | HARDNESS RATING | 36.0 ROCKWELL C MINIMUM AND | | 43.0 ROCKWELL C MAXIMUM OVERALL | MINIMUM TENSILE STRENGTH | 160000 POUNDS PER SQUARE INCH | MINIMUM YIELD STRENGTH | 130000 POUNDS PER SQUARE INCH | HEAD STYLE | FLAT COUNTERSUNK | HEAD DIAMETER | 0.872 INCHES MINIMUM AND | | 0.938 INCHES MAXIMUM | COUNTERSINK ANGLE | 82.0 DEGREES NOMINAL | INTERNAL DRIVE STYLE | HEXAGON | WIDTH ACROSS FLATS | 0.312 INCHES NOMINAL |
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