5305-01-601-6922 SCREW,MACHINE 5305-01-601-7257 SCREW SPC

National Stock Number:
5305-01-601-7151

Federal Supply Class:
5305

National Item Identification Number:
016017151

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:
252644653711NAVAL SEA SYSTEMS COMMAND


Techincal Specification:
HEAD HEIGHT0.285 INCHES MINIMUM AND 0.300 INCHES MAXIMUM
HEAD STYLEFILLISTER
INTERNAL DRIVE STYLEHEXAGON
PART NAME ASSIGNED BY CONTROLLING AGENCYBOLT,SELF-LOCKING
LOCKING FEATUREPATCH OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-S-5000 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
MATERIALSTEEL COMP 4340 OVERALL
NOMINAL THREAD DIAMETER0.250 INCHES
SPECIAL FEATURESHEAT TREAT TO 160,000 PSI ULTIMATE TENSILE STRENGTH MINIMUM
WIDTH ACROSS FLATS0.250 INCHES MINIMUM AND 0.253 INCHES MAXIMUM
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416,TYPE 2,CLASS 3 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENTCADMIUM OVERALL
THREAD CLASS3A
THREAD DIRECTIONRIGHT-HAND
THREAD LENGTH0.533 INCHES MINIMUM AND 0.593 INCHES MAXIMUM
THREAD QUANTITY PER INCH28
THREAD SERIES DESIGNATORUNF
CHAMFER ANGLE45.0 DEGREES NOMINAL
FASTENER LENGTH1.063 INCHES MINIMUM AND 1.073 INCHES MAXIMUM
HARDNESS RATING36.0 ROCKWELL C MINIMUM AND 42.0 ROCKWELL C MAXIMUM OVERALL
HEAD DIAMETER0.625 INCHES NOMINAL


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