5305-01-390-0051 SCREW,CAP,HEXAGON HEAD Index 5310-01-390-0053 WASHER,FLAT

National Stock Number:
5305-01-390-0052

Federal Supply Class:
5305

National Item Identification Number:
013900052

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:
12388081-16019207U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM


Techincal Specification:
THREAD SERIES DESIGNATORUNC
FASTENER LENGTH1.750 INCHES NOMINAL
MATERIALSTEEL OVERALL
HEAD STYLEHEXAGON
THREAD DIRECTIONRIGHT-HAND
NOMINAL THREAD DIAMETER0.750 INCHES
THREAD QUANTITY PER INCH10
THREAD CLASS2A
MATERIAL DOCUMENT AND CLASSIFICATIONSAE J429, GR 8 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
SURFACE TREATMENTPHOSPHATE ZINC OVERALL
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION171, 5.1.1 MIL STD SINGLE TREATMENT RESPONSE OVERALL
HEAD HEIGHT0.483 INCHES NOMINAL
WIDTH BETWEEN FLATS1.125 INCHES NOMINAL


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