5305-00-579-4720 SCREW,CAP,HEXAGON HEAD Index 5305-00-579-4724 SCREW,CAP,SOCKET HEAD

National Stock Number:
5305-00-579-4721

Federal Supply Class:
5305

National Item Identification Number:
005794721

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:
MS35458-2496906MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M


Techincal Specification:
THREAD SERIES DESIGNATORUNF
NOMINAL THREAD DIAMETER0.250 INCHES
THREAD QUANTITY PER INCH28
THREAD CLASS3A
THREAD DIRECTIONRIGHT-HAND
THREAD LENGTH0.875 INCHES NOMINAL
FASTENER LENGTH0.875 INCHES NOMINAL
MATERIALSTEEL OVERALL
SURFACE TREATMENTCADMIUM OR
ZINC OVERALL
HARDNESS RATING36.0 ROCKWELL C MINIMUM AND
43.0 ROCKWELL C MAXIMUM OVERALL
MINIMUM YIELD STRENGTH140000 POUNDS PER SQUARE INCH
HEAD STYLEFLAT CHAMFER
HEAD DIAMETER0.367 INCHES MINIMUM AND
0.375 INCHES MAXIMUM
HEAD HEIGHT0.244 INCHES MINIMUM AND
0.250 INCHES MAXIMUM
INTERNAL DRIVE STYLEHEXAGON
WIDTH ACROSS FLATS0.187 INCHES MINIMUM AND
0.189 INCHES MAXIMUM
NONDEFINITIVE SPEC/STD DATA1 TYPE AND
11 STYLE
SPEC/STD CONTROLLING DATA
MANUFACTURERS CODE96906
DEFINITIVE GOVERNMENT SPEC/STD REFERENCEMS35458-24


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