5305-01-297-1241 SCREW,CAP,SOCKET HEAD Index 5305-01-297-1243 SCREW,CAP,SOCKET HEAD

National Stock Number:
5305-01-297-1242

Federal Supply Class:
5305

National Item Identification Number:
012971242

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:
6242952-8H4853711NAVAL SEA SYSTEMS COMMAND


Techincal Specification:
COLORGRAY/GREY OVERALL
FASTENER LENGTH2.920 INCHES MINIMUM AND 3.000 INCHES MAXIMUM
HEAD DIAMETER0.735 INCHES MINIMUM AND 0.750 INCHES MAXIMUM
HEAD HEIGHT0.492 INCHES MINIMUM AND 0.500 INCHES MAXIMUM
HEAD STYLEFLAT CHAMFER
HOLE CONFIGURATION STYLEROUND INTERNAL HEXAGON
HOLE DIAMETER0.061 INCHES MINIMUM AND 0.067 INCHES MAXIMUM
HOLE QUANTITY6
HOLE TYPEDRILLED
INTERNAL DRIVE STYLEHEXAGON
MATERIALSTEEL OVERALL
NOMINAL THREAD DIAMETER0.500 INCHES
WIDTH ACROSS FLATS0.375 INCHES MINIMUM AND 0.379 INCHES MAXIMUM
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-C-81751 TY 1,CL 4 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENTCERAMIC OVERALL
THREAD DIRECTIONRIGHT-HAND
THREAD CLASS3A
THREAD LENGTH1.500 INCHES MINIMUM
THREAD SERIES DESIGNATORUNRF
THREAD QUANTITY PER INCH20


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