5305-01-297-1770 SCREW,CAP,SOCKET HEAD Index 5305-01-297-1772 SCREW,CAP,SOCKET HEAD

National Stock Number:
5305-01-297-1771

Federal Supply Class:
5305

National Item Identification Number:
012971771

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:
6242928-1053711NAVAL SEA SYSTEMS COMMAND


Techincal Specification:
COLORGRAY/GREY OVERALL
FASTENER LENGTH0.595 INCHES MINIMUM AND 0.625 INCHES MAXIMUM
HEAD DIAMETER0.365 INCHES MINIMUM AND 0.375 INCHES MAXIMUM
HEAD HEIGHT0.244 INCHES MINIMUM AND 0.250 INCHES MAXIMUM
HEAD STYLEFLAT CHAMFER
HOLE CONFIGURATION STYLEROUND INTERNAL HEXAGON
HOLE DIAMETER0.044 INCHES MINIMUM AND 0.050 INCHES MAXIMUM
HOLE QUANTITY3
HOLE TYPEDRILLED
INTERNAL DRIVE STYLEHEXAGON
MATERIALSTEEL COMP 302 OR STEEL COMP 304 OR STEEL COMP 305 OR STEEL COMP 316 OR STEEL COMP 384 OR STEEL COMP XM-7 OVERALL
MINIMUM TENSILE STRENGTH80000 POUNDS PER SQUARE INCH
NOMINAL THREAD DIAMETER0.250 INCHES
WIDTH ACROSS FLATS0.188 INCHES MINIMUM AND 0.190 INCHES MAXIMUM
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-C-81751 TY1,CL4 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENTCERAMIC OVERALL
THREAD DIRECTIONRIGHT-HAND
THREAD CLASS3A
THREAD LENGTH0.524 INCHES MINIMUM AND 0.625 INCHES MAXIMUM
THREAD SERIES DESIGNATORUNF
THREAD QUANTITY PER INCH28


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