5306-00-606-5922, BOLT,MACHINE

National Stock Number:
5306-00-606-5922

Federal Supply Class:
5306

National Item Identification Number:
006065922

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:

727145-1

98897

LOCKHEED MARTIN CORP

Techincal Specification:

DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER	4.236 INCHES NOMINAL FIRST HOLE
DISTANCE FROM CENTERLINE TO FLAT	0.375 INCHES MINIMUM AND 0.378 INCHES MAXIMUM
FASTENER LENGTH	4.360 INCHES NOMINAL
GRIP LENGTH	3.875 INCHES NOMINAL
HEAD DIAMETER	0.870 INCHES NOMINAL
HEAD HEIGHT	0.250 INCHES NOMINAL
HEAD STYLE	DEE CHAMFER
MATERIAL DOCUMENT AND CLASSIFICATION	MIL-S-6049,CONDITION C-4 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
MATERIAL	STEEL COMP 8740 OVERALL
MINIMUM TENSILE STRENGTH	180000 POUNDS PER SQUARE INCH
NOMINAL THREAD DIAMETER	0.500 INCHES
SHANK UNTHREADED HOLE DIAMETER	0.105 INCHES MINIMUM AND 0.110 INCHES MAXIMUM FIRST HOLE
SPECIAL FEATURES	RELIEF GROOVE NEXT TO THREADED END 0.427 IN.MAX. DIA.,0.125 IN. LONG; RELIEVED SEGMENT BETWEEN HEAD AND UNTHREADED SEGMENT,0.479 IN. NOM. DIA. AND0.125 IN. WIDE
SURFACE FINISH	63.0 MICROINCHES GRIP
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	MIL-S-6049,SPEC. 496 TYPE 2 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENT	CHROMIUM OVERALL
THREAD CLASS	3A
THREAD DIRECTION	RIGHT-HAND
THREAD LENGTH	0.485 INCHES NOMINAL
THREAD SERIES DESIGNATOR	UNF
THREAD QUANTITY PER INCH	20

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