5306-01-372-8390, BOLT,MACHINE

5305-01-372-8391 SCREW,EXTERNALLY RELIEVED BODY

National Stock Number:
5306-01-372-8390

Federal Supply Class:
5306

National Item Identification Number:
013728390

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:

6797692-8

63005

ROLLS-ROYCE CORPORATION

Techincal Specification:

DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER	0.750 INCHES NOMINAL GRIP
FASTENER LENGTH	12.500 INCHES NOMINAL
HEAD HEIGHT	0.500 INCHES NOMINAL
HEAD STYLE	SQUARE
MATERIAL DOCUMENT AND CLASSIFICATION	SAE ASSN STD SINGLE MATERIAL RESPONSE OVERALL
MATERIAL	STEEL COMP 4130 OVERALL
III PART NAME ASSIGNED BY CONTROLLING AGENCY	NAVY SPECIAL PROJECT
PROPRIETARY CHARACTERISTICS	PACS
NOMINAL THREAD DIAMETER	0.500 INCHES
NONSTANDARD THREAD PITCH DIAMETER	+0.4306 TO 0.4443 INCHES
SHANK UNTHREADED HOLE DIAMETER	0.126 INCHES MINIMUM AND 0.135 INCHES MAXIMUM GRIP
SPECIAL FEATURES	0.780 IN. CENTER TO CENTER DISTANCE TO SECOND HOLD IN UNTHREADED SHANK
WIDTH BETWEEN FLATS	0.372 INCHES MINIMUM AND 0.377 INCHES MAXIMUM
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	MIL-C-26074 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENT	NICKEL OVERALL
THREAD DIRECTION	RIGHT-HAND
THREAD LENGTH	11.375 INCHES NOMINAL
THREAD QUANTITY PER INCH	10
THREAD SERIES DESIGNATOR	ACME

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