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National Stock Number:
5305-00-042-7729
Federal Supply Class:
5305
National Item Identification Number:
000427729
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 | 0.615 INCHES MINIMUM AND 0.645 INCHES MAXIMUM | | HEAD DIAMETER | 0.367 INCHES MINIMUM AND 0.375 INCHES MAXIMUM | | HEAD HEIGHT | 0.244 INCHES MINIMUM AND 0.250 INCHES MAXIMUM | | HEAD STYLE | FLAT CHAMFER | | INTERNAL DRIVE STYLE | HEXAGON | | MATERIAL | STEEL OVERALL | | NOMINAL THREAD DIAMETER | 0.250 INCHES | | WIDTH ACROSS FLATS | 0.188 INCHES MINIMUM AND 0.189 INCHES MAXIMUM | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416 TY 1 CL 3 FED SPEC 1ST TREATMENT RESPONSE OR QQ-Z-325 TY 1 CL 3 FED SPEC 2ND TREATMENT RESPONSE OVERALL | | SURFACE TREATMENT | CADMIUM OR ZINC OVERALL | | THREAD CLASS | 3A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.645 INCHES MAXIMUM | | THREAD QUANTITY PER INCH | 28 | | THREAD SERIES DESIGNATOR | UNF |
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