5998-01-491-9636 CIRCUIT CARD ASSEMBLY Index 5998-01-491-9638 CIRCUIT CARD ASSEMBLY

National Stock Number:
5305-01-491-9637

Federal Supply Class:
5305

National Item Identification Number:
014919637

Description:
SCREW,CAP,HEXAGON HEAD

Detail:
An externally threaded fastener designed for insertion into holes in assembled parts, for mating with a preformed internal thread and for tightening or releasing by torquing the head. The threaded and unthreaded portions are both of the same nominal diameter of 0.190 inch (5 mm) or larger. Head dimensions and sizes of threaded and unthreaded portions shall conform to internationally recognized fastener standards. The thread length being the controlled dimension, the grip length is not specified. A locking feature may be incorporated in the design of the head or threads. Excludes BOLT, MACHINE; BOLT, EXTERNALLY RELIEVED BODY; BOLT, INTERNAL WRENCHING; and SCREW, CAP, SOCKET HEAD.


Manufacturer Information:
B1834C04012N80204AMERICAN NATIONAL STANDARDS INSTITUTE INCORPORATED


Techincal Specification:
EXTERNAL THREAD TOLERANCE CLASS4G6G
FASTENER LENGTH12.0 MILLIMETERS NOMINAL
HEAD DIAMETER7.24 MILLIMETERS MINIMUM AND 7.60 MILLIMETERS MAXIMUM
HEAD HEIGHT1.95 MILLIMETERS MINIMUM AND 2.20 MILLIMETERS MAXIMUM
HEAD STYLEBUTTON
MATERIALSTEEL CORROSION RESISTING OVERALL
NOMINAL THREAD DIAMETER4.0 MILLIMETERS
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONASTMA380 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENTPASSIVATE OVERALL
THREAD DIRECTIONRIGHT-HAND
THREAD LENGTH12.0 MILLIMETERS NOMINAL
THREAD PITCH IN MILLIMETERS0.7
THREAD SERIES DESIGNATORM


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