5310-01-396-5254 NUT,PLAIN,BARREL Index 5310-01-396-5256 WASHER,FLAT

National Stock Number:
5305-01-396-5255

Federal Supply Class:
5305

National Item Identification Number:
013965255

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:
12387270-4619207U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM
12569615-4619207U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM


Techincal Specification:
THREAD SERIES DESIGNATORUNC
NOMINAL THREAD DIAMETER0.190 INCHES
THREAD QUANTITY PER INCH24
THREAD CLASS3A
THREAD DIRECTIONRIGHT-HAND
THREAD LENGTH0.636 INCHES MINIMUM AND
0.719 INCHES MAXIMUM
FASTENER LENGTH0.719 INCHES MINIMUM AND
0.750 INCHES MAXIMUM
MATERIALSTEEL OVERALL
SURFACE TREATMENTZINC AND
CHROMATE OVERALL
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-STD-171, 1.9.2.3 MIL STD ALL TREATMENT RESPONSES OVERALL
COLORBRONZE OR
OLIVE DRAB OVERALL
HARDNESS RATING38.0 ROCKWELL C MINIMUM AND
45.0 ROCKWELL C MAXIMUM OVERALL
MINIMUM TENSILE STRENGTH160000 POUNDS PER SQUARE INCH
HEAD STYLEFLAT CHAMFER
HEAD DIAMETER0.303 INCHES MINIMUM AND
0.312 INCHES MAXIMUM
HEAD HEIGHT0.185 INCHES MINIMUM AND
0.190 INCHES MAXIMUM
INTERNAL DRIVE STYLEHEXAGON
WIDTH ACROSS FLATS0.156 INCHES MINIMUM AND
0.158 INCHES MAXIMUM


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