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National Stock Number: 5305-01-521-6770
Federal Supply Class: 5305
National Item Identification Number: 015216770
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:
AES43M407025CH1A81 | 05047 | THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS | B18.3.1 | 05047 | THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS | B1831BH040025N | 80204 | AMERICAN NATIONAL STANDARDS INSTITUTE INCORPORATED |
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Techincal Specification:
EXTERNAL THREAD TOLERANCE CLASS | 6G | FASTENER LENGTH | 25.0 MILLIMETERS NOMINAL | HEAD DIAMETER | 6.80 MILLIMETERS MINIMUM AND 7.00 MILLIMETERS MAXIMUM | HEAD HEIGHT | 3.88 MILLIMETERS MINIMUM AND 4.00 MILLIMETERS MAXIMUM | HEAD STYLE | FLAT CHAMFER | INTERNAL DRIVE STYLE | HEXAGON | MATERIAL | STEEL PROPERTY CLASS 12.9 OVERALL | NOMINAL THREAD DIAMETER | 4.0 MILLIMETERS | WIDTH ACROSS FLATS | 4.020 MILLIMETERS MINIMUM AND 4.084 MILLIMETERS MAXIMUM | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | ASTMB633FE/ZN5,TYII ASSN STD SINGLE TREATMENT RESPONSE OVERALL | SURFACE TREATMENT | ZINC OVERALL | THREAD DIRECTION | RIGHT-HAND | THREAD LENGTH | 23.5 MILLIMETERS NOMINAL | THREAD SERIES DESIGNATOR | M | THREAD PITCH IN MILLIMETERS | 0.7 |
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