5305-01-158-3538 SCREW,CAP,SOCKET HEAD Index 5940-01-158-3540 TERMINAL,STUD

National Stock Number:
5305-01-158-3539

Federal Supply Class:
5305

National Item Identification Number:
011583539

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:
526317019204ARMY, UNITED STATES DEPARTMENT OF THE


Techincal Specification:
DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER2.312 INCHES NOMINAL FIRST HOLE
FASTENER LENGTH2.469 INCHES MINIMUM AND 2.531 INCHES MAXIMUM
HEAD HEIGHT0.438 INCHES MINIMUM AND 0.500 INCHES MAXIMUM
HEAD STYLEHEXAGON
NOMINAL THREAD DIAMETER0.625 INCHES
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-631 FED SPEC SINGLE MATERIAL RESPONSE OVERALL OR QQ-S-634 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
MATERIALSTEEL COMP 1020 OVERALL OR STEEL COMP 1021 OVERALL OR STEEL COMP 1022 OVERALL OR STEEL COMP 1023 OVERALL OR STEEL COMP 1524 OVERALL OR STEEL COMP 1025 OVERALL OR STEEL COMP 1026 OVERALL OR STEEL COMP 1527 OVERALL OR STEEL COMP 1029 OVERALL OR STEEL COMP 1030 OVERALL OR STEEL COMP 1031 OVERALL OR STEEL COMP 1033 OVERALL OR STEEL COMP 1034 OVERALL OR STEEL COMP 1035 OVERALL
SHANK UNTHREADED HOLE DIAMETER0.140 INCHES NOMINAL FIRST HOLE
WIDTH BETWEEN FLATS0.844 INCHES MINIMUM AND 0.906 INCHES MAXIMUM
SURFACE FINISH125.0 MICROINCHES OVERALL
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416,TY 2,CL 2 FED SPEC 1ST TREATMENT RESPONSE OVERALL OR QQ-Z-325,TY 2,CL 2 FED SPEC 2ND TREATMENT RESPONSE OVERALL
SURFACE TREATMENTCADMIUM OVERALL OR ZINC OVERALL
THREAD CLASS2A
THREAD DIRECTIONRIGHT-HAND
THREAD LENGTH0.907 INCHES MINIMUM AND 0.969 INCHES MAXIMUM
THREAD SERIES DESIGNATORUNF
THREAD QUANTITY PER INCH18


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