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National Stock Number:
5305-00-551-7868
Federal Supply Class:
5305
National Item Identification Number:
005517868
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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Techincal Specification:
| FASTENER LENGTH | 1.750 INCHES NOMINAL | | HARDNESS RATING | 36.0 ROCKWELL C MINIMUM AND 43.0 ROCKWELL C MAXIMUM OVERALL | | HEAD DIAMETER | 0.553 INCHES MINIMUM AND 0.562 INCHES MAXIMUM | | HEAD HEIGHT | 0.368 INCHES MINIMUM AND 0.375 INCHES MAXIMUM | | HEAD STYLE | FLAT CHAMFER | | INTERNAL DRIVE STYLE | HEXAGON | | MATERIAL DOCUMENT AND CLASSIFICATION | QQ-S-624 FED SPEC ALL MATERIAL RESPONSES OVERALL | | MATERIAL | STEEL COMP 4135 OR STEEL COMP 4137 OR STEEL COMP 8640 OVERALL | | MINIMUM YIELD STRENGTH | 140000 POUNDS PER SQUARE INCH | | NOMINAL THREAD DIAMETER | 0.375 INCHES | | NONDEFINITIVE SPEC/STD DATA | 1 TYPE AND 11 STYLE | | WIDTH ACROSS FLATS | 0.312 INCHES MINIMUM AND 0.315 INCHES MAXIMUM | | SURFACE TREATMENT | ZINC OVERALL | | THREAD DIRECTION | RIGHT-HAND | | THREAD CLASS | 3A | | THREAD LENGTH | 1.250 INCHES MINIMUM | | THREAD QUANTITY PER INCH | 16 | | THREAD SERIES DESIGNATOR | UNC |
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