5306-01-122-0249, BOLT,MACHINE

National Stock Number:
5306-01-122-0249

Federal Supply Class:
5306

National Item Identification Number:
011220249

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:

23000072	63005	ROLLS-ROYCE CORPORATION
23000072	73342	ALLISON TRANSMISSION INC

Techincal Specification:

THREAD DIRECTION	RIGHT-HAND
FASTENER LENGTH	19.2 MILLIMETERS MINIMUM AND
	20.0 MILLIMETERS MAXIMUM
MATERIAL	PLASTIC POLYAMIDE LOCKING FEATURE
	STEEL PROPERTY CLASS 8.8 FASTENER
THREAD LENGTH	16.88 MILLIMETERS NOMINAL
HEAD STYLE	HEXAGON
THREAD SERIES DESIGNATOR	M
NOMINAL THREAD DIAMETER	8.0 MILLIMETERS
THREAD PITCH IN MILLIMETERS	1.25
EXTERNAL THREAD TOLERANCE CLASS	6H
MATERIAL DOCUMENT AND CLASSIFICATION	GM 500M(8.8) MFR REF SINGLE MATERIAL RESPONSE FASTENER
SURFACE TREATMENT	PHOSPHATE FASTENER
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	GM 4435-M,CODE A MFR REF SINGLE TREATMENT RESPONSE FASTENER
HEAD HEIGHT	5.10 MILLIMETERS MINIMUM AND
	5.50 MILLIMETERS MAXIMUM
WIDTH BETWEEN FLATS	12.73 MILLIMETERS MINIMUM AND
	13.00 MILLIMETERS MAXIMUM
GRIP LENGTH	3.12 MILLIMETERS NOMINAL

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