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National Stock Number:
5305-01-495-4314
Federal Supply Class:
5305
National Item Identification Number:
014954314
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:
| B1831BH120040N | 80204 | AMERICAN NATIONAL STANDARDS INSTITUTE INCORPORATED |
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Techincal Specification:
| EXTERNAL THREAD TOLERANCE CLASS | 4G6G | | FASTENER LENGTH | 39.7 MILLIMETERS MINIMUM AND 40.3 MILLIMETERS MAXIMUM | | HEAD DIAMETER | 17.63 MILLIMETERS MINIMUM AND 18.00 MILLIMETERS MAXIMUM | | HEAD HEIGHT | 11.79 MILLIMETERS MINIMUM AND 12.00 MILLIMETERS MAXIMUM | | HEAD STYLE | FLAT CHAMFER | | INTERNAL DRIVE STYLE | HEXAGON | | MATERIAL | STEEL PROPERTY CLASS 12.9 OVERALL | | NOMINAL THREAD DIAMETER | 12.0 MILLIMETERS | | WIDTH ACROSS FLATS | 10.03 MILLIMETERS MINIMUM AND 10.13 MILLIMETERS MAXIMUM | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | ASTM B633,FE/ZN5,TY 2 ASSN STD SINGLE TREATMENT RESPONSE OVERALL | | SURFACE TREATMENT | ZINC OVERALL | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 40.0 MILLIMETERS NOMINAL | | THREAD PITCH IN MILLIMETERS | 1.75 | | THREAD SERIES DESIGNATOR | M |
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