5310-01-491-4679 WASHER,FLAT Index 4710-01-491-4681 TUBE,METALLIC

National Stock Number:
5305-01-491-4680

Federal Supply Class:
5305

National Item Identification Number:
014914680

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.


Manufacturer Information:
B1831BH050040N80204AMERICAN NATIONAL STANDARDS INSTITUTE INCORPORATED


Techincal Specification:
EXTERNAL THREAD TOLERANCE CLASS6H
FASTENER LENGTH40.0 MILLIMETERS NOMINAL
HEAD DIAMETER8.27 MILLIMETERS MINIMUM AND 8.50 MILLIMETERS MAXIMUM
HEAD HEIGHT4.8 MILLIMETERS MINIMUM AND 5.0 MILLIMETERS MAXIMUM
HEAD STYLEFLAT CHAMFER
INTERNAL DRIVE STYLEHEXAGON
MATERIALSTEEL PROPERTY CLASS 12.9 OVERALL
NOMINAL THREAD DIAMETER5.0 MILLIMETERS
WIDTH ACROSS FLATS4.0 MILLIMETERS NOMINAL
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-Z-325,TY2,CL3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENTZINC AND CHROMATE OVERALL
THREAD DIRECTIONRIGHT-HAND
THREAD PITCH IN MILLIMETERS0.8
THREAD LENGTH40.0 MILLIMETERS NOMINAL
THREAD SERIES DESIGNATORM


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