5306-01-381-9869 BOLT,MACHINE Index 5325-01-381-9871 INSERT,SCREW THREAD

National Stock Number:
5305-01-381-9870

Federal Supply Class:
5305

National Item Identification Number:
013819870

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:
12387270-6201417GENERAL DYNAMICS LAND SYSTEMS INC.
12387270-6219207U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM
5305013819870A00AME.C.A ETABLISSEMENT CENTRAL DESAPPROVISIONNEMENTS DES FORCES ARMEE


Techincal Specification:
THREAD SERIES DESIGNATORUNC
NOMINAL THREAD DIAMETER0.250 INCHES
THREAD QUANTITY PER INCH20
THREAD CLASS3A
THREAD DIRECTIONRIGHT-HAND
THREAD LENGTH0.900 INCHES MINIMUM AND
1.000 INCHES MAXIMUM
FASTENER LENGTH0.969 INCHES MINIMUM AND
1.000 INCHES MAXIMUM
MATERIALSTEEL UNS K03104 OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONASTM A574 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
SURFACE TREATMENTZINC AND
CHROMATE OVERALL
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-STD-171, FINISH 1.9.2.3, 0.0003 IN. THK MIL STD SINGLE TREATMENT RESPONSE OVERALL
COLORBUFF OR
OLIVE DRAB OVERALL
HARDNESS RATING39.0 ROCKWELL C MINIMUM AND
45.0 ROCKWELL C MAXIMUM OVERALL
MINIMUM TENSILE STRENGTH180000 POUNDS PER SQUARE INCH
HEAD STYLEFLAT CHAMFER
HEAD DIAMETER0.365 INCHES MINIMUM AND
0.375 INCHES MAXIMUM
HEAD HEIGHT0.244 INCHES MINIMUM AND
0.250 INCHES MAXIMUM
INTERNAL DRIVE STYLEHEXAGON
WIDTH ACROSS FLATS0.1875 INCHES MINIMUM AND
0.1900 INCHES MAXIMUM


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