5305-01-121-8474 SCREW,MACHINE Index 5305-01-121-8476 SCREW,CLOSE TOLERANCE

National Stock Number:
5306-01-121-8475

Federal Supply Class:
5306

National Item Identification Number:
011218475

Description:
BOLT,MACHINE

Detail:
An externally threaded fastener designed for insertion through holes in assembled parts and normally intended to be tightened or released by torquing a nut. The threaded and unthreaded portions are both of one nominal diameter of 0.190 inch (5 mm) or larger. The head is not designed to be held or driven with an inserted driver or by the thumb and fingers. A locking feature may be incorporated in the design of the head or threads. Head dimensions and sizes of threaded and unthreaded portions shall conform to internationally recognized fastener standards. For items having a grip length portion machined to a tolerance of 0.0015 inch (0.038 mm) or less, BOLT, SHEAR. See also SCREW, CAP, HEXAGON HEAD and SCREW, MACHINE.


Manufacturer Information:
MS35764-25796906MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M


Techincal Specification:
THREAD DIRECTIONRIGHT-HAND
FASTENER LENGTH2.920 INCHES MINIMUM AND
3.000 INCHES MAXIMUM
MATERIALSTEEL OVERALL
THREAD LENGTH1.045 INCHES MINIMUM AND
1.589 INCHES MAXIMUM
HEAD STYLEDISTORTED HEAD
THREAD SERIES DESIGNATORUNC
NOMINAL THREAD DIAMETER0.438 INCHES
THREAD QUANTITY PER INCH14
THREAD CLASS2A
SURFACE TREATMENTPHOSPHATE ZINC OVERALL
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-P-16232,TY Z,CLASS 2 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
HARDNESS RATING32.0 ROCKWELL C MINIMUM AND
38.0 ROCKWELL C MAXIMUM OVERALL
MINIMUM TENSILE STRENGTH150000 POUNDS PER SQUARE INCH
HEAD HEIGHT0.281 INCHES MINIMUM AND
0.291 INCHES MAXIMUM
WIDTH BETWEEN FLATS0.612 INCHES MINIMUM AND
0.625 INCHES MAXIMUM
LOCKING FEATUREDISTORTIONS BEARING SURFACE OF HEAD
GRIP LENGTH1.875 INCHES MAXIMUM
FEATURES PROVIDEDFINISHED HEAD
SPEC/STD CONTROLLING DATA
MANUFACTURERS CODE96906
DEFINITIVE GOVERNMENT SPEC/STD REFERENCEMS35764-257


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