5306-00-144-3703, BOLT,MACHINE

National Stock Number:
5306-00-144-3703

Federal Supply Class:
5306

National Item Identification Number:
001443703

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:

10114181	A486G	NIMIKKEISTOKESKUS NCB FINLAND
557	80218	PHOENIX STEEL CORP
6026-3272-1	36378	RAYTHEON TECHNICAL SERVICES COMPANY
932.19.21.101	S4080	PILATUS AIRCRAFT LTD
AN4-4	88044	AERONAUTICAL STANDARDS GROUP DEPT OF NAVY AND AIR FORCE

Techincal Specification:

DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER	0.374 INCHES NOMINAL FIRST HOLE
FASTENER LENGTH	0.531 INCHES NOMINAL
FEATURES PROVIDED	FINISHED HEAD
GRIP LENGTH	0.062 INCHES NOMINAL
HARDNESS RATING	26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM OVERALL
HEAD HEIGHT	0.140 INCHES MINIMUM AND 0.172 INCHES MAXIMUM
HEAD STYLE	HEXAGON
MATERIAL DOCUMENT AND CLASSIFICATION	MIL-B-6812 MIL SPEC ALL MATERIAL RESPONSES OVERALL
MATERIAL	STEEL COMP 4037 OR STEEL COMP 4130 OR STEEL COMP 8630 OR STEEL COMP 8735 OR STEEL COMP 8740 OR STEEL COMP 4140 OVERALL
MINIMUM TENSILE STRENGTH	125000 POUNDS PER SQUARE INCH
NOMINAL THREAD DIAMETER	0.250 INCHES
SHANK UNTHREADED HOLE DIAMETER	0.076 INCHES MINIMUM FIRST HOLE
WIDTH BETWEEN FLATS	0.428 INCHES MINIMUM AND 0.440 INCHES MAXIMUM
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	QQ-P-416 TYPE 2 CLASS 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENT	CADMIUM AND CHROMATE OVERALL
THREAD CLASS	3A
THREAD DIRECTION	RIGHT-HAND
THREAD LENGTH	0.469 INCHES MINIMUM
THREAD QUANTITY PER INCH	28
THREAD SERIES DESIGNATOR	UNF

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