5306-01-238-8271, BOLT,MACHINE

National Stock Number:
5306-01-238-8271

Federal Supply Class:
5306

National Item Identification Number:
012388271

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:

02/911028	K7599	J.C. BAMFORD EXCAVATORS LIMITED
124763	7041B	URO VEHICULOS ESPECIALES SA
44467	05573	BARNES GROUP INC.
3903096	15434	CUMMINS INC.
5306PL0816560	9009H	INSPEKTORAT WSPARCIA SIL ZBROJNYCH
CBU1137	U5612	LEYLAND TRUCKS LTD FOR SPARE PARTS S E U6425

Techincal Specification:

EXTERNAL THREAD TOLERANCE CLASS	6G
FASTENER LENGTH	70.00 MILLIMETERS NOMINAL
FEATURES PROVIDED	FINISHED HEAD
HARDNESS RATING	27.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM OVERALL
HEAD HEIGHT	5.50 MILLIMETERS NOMINAL
HEAD STYLE	HEXAGON
MATERIAL DOCUMENT AND CLASSIFICATION	DIN933 NATIONAL SPEC SINGLE MATERIAL RESPONSE OVERALL
MATERIAL	STEEL PROPERTY CLASS 9.8 OR STEEL PROPERTY CLASS 10.9 OVERALL
MINIMUM TENSILE STRENGTH	142230 POUNDS PER SQUARE INCH
MINIMUM YIELD STRENGTH	128000 POUNDS PER SQUARE INCH
NOMINAL THREAD DIAMETER	8.0 MILLIMETERS
SURFACE TREATMENT	ZINC AND PHOSPHATE OVERALL
THREAD DIRECTION	RIGHT-HAND
THREAD LENGTH	54.00 MILLIMETERS MINIMUM AND 70.00 MILLIMETERS MAXIMUM
THREAD PITCH IN MILLIMETERS	1.25
THREAD SERIES DESIGNATOR	M
WIDTH BETWEEN FLATS	13.00 MILLIMETERS NOMINAL

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