5306-01-360-2272, BOLT,MACHINE

National Stock Number:
5306-01-360-2272

Federal Supply Class:
5306

National Item Identification Number:
013602272

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:

1227B0728	03538	LOCKHEED MARTIN CORPORATION
1227B0728	54497	MARTIN MARIETTA TECHNOLOGIES INC SUB OF MARTIN MARIETTA CORP AERO AND NAVAL SYSTEMS

Techincal Specification:

FASTENER LENGTH	0.453 INCHES MINIMUM AND 0.498 INCHES MAXIMUM
GRIP LENGTH	0.062 INCHES NOMINAL
HEAD HEIGHT	0.180 INCHES NOMINAL
HEAD STYLE	HEXAGON
LOCKING FEATURE	STRIP THREADS
MATERIAL DOCUMENT AND CLASSIFICATION	MIL-P-22241 MIL SPEC SINGLE MATERIAL RESPONSE STAND-OFF
MATERIAL DOCUMENT AND CLASSIFICATION	MIL-P-25732 MIL SPEC SINGLE MATERIAL RESPONSE RING
MATERIAL DOCUMENT AND CLASSIFICATION	QQ-N-781 FED SPEC SINGLE MATERIAL RESPONSE FASTENER
MATERIAL	PLASTIC POLYAMIDE NYLON LOCKING FEATURE
MATERIAL	NICKEL ALLOY 400 OR NICKEL ALLOY R-405 FASTENER
MATERIAL	RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR RING
MATERIAL	PLASTIC POLYTETRAFLUOROETHYLENE STAND-OFF
NOMINAL THREAD DIAMETER	0.250 INCHES
SPECIAL FEATURES	DRILLED HOLE COUNTERBORED FROM SHANK END 0.116 IN. DIA
THREAD CLASS	2A
THREAD DIRECTION	RIGHT-HAND
THREAD LENGTH	0.391 INCHES MINIMUM AND 0.436 INCHES MAXIMUM
THREAD QUANTITY PER INCH	20
THREAD SERIES DESIGNATOR	UNIFIED NATIONAL COARSE (UNC)
WIDTH BETWEEN FLATS	0.490 INCHES MINIMUM AND 0.502 INCHES MAXIMUM

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