5340-01-473-1676 PADLOCK COVER Index 5340-01-473-1678 PADLOCK COVER

National Stock Number:
5305-01-473-1677

Federal Supply Class:
5305

National Item Identification Number:
014731677

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:
12387270-10319207U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM


Techincal Specification:
FASTENER LENGTH1.960 INCHES MINIMUM AND 2.000 INCHES MAXIMUM
HARDNESS RATING36.0 ROCKWELL C MINIMUM AND 45.0 ROCKWELL C MAXIMUM OVERALL
HEAD DIAMETER0.550 INCHES MINIMUM AND 0.562 INCHES MAXIMUM
HEAD HEIGHT0.368 INCHES MINIMUM AND 0.375 INCHES MAXIMUM
HEAD STYLEFLAT CHAMFER
INTERNAL DRIVE STYLEHEXAGON
MATERIALSTEEL OVERALL
MINIMUM YIELD STRENGTH130000 POUNDS PER SQUARE INCH
NOMINAL THREAD DIAMETER0.375 INCHES
SURFACE TREATMENTZINC AND CHROMATE OVERALL
THREAD CLASS3A
THREAD DIRECTIONRIGHT-HAND
THREAD LENGTH1.375 INCHES MINIMUM AND 1.500 INCHES MAXIMUM
THREAD QUANTITY PER INCH16
THREAD SERIES DESIGNATORUNIFIED NATIONAL COARSE (UNC)
WIDTH ACROSS FLATS0.312 INCHES MINIMUM AND 0.316 INCHES MAXIMUM


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