5306-01-194-4977, BOLT,EXTERNALLY RELIEVED BODY

National Stock Number:
5306-01-194-4977

Federal Supply Class:
5306

National Item Identification Number:
011944977

Description:
BOLT,EXTERNALLY RELIEVED BODY

Detail:
An externally threaded fastener whose threaded portion is of one nominal diameter, and whose unthreaded portion has been machined or ground in one or more places or over its entire length to a maximum diameter less than the minimum pitch diameter of the thread (excludes undercuts for thread relief). It is No. 10 (0.190 IN.) (5 mm) or larger in size and has a head which is not designed to be held or driven with an inserted driver or designed for rotation by the thumb and fingers. A locking feature may be incorporated in the design of the head or threads. Excludes BOLT, INTERNAL WRENCHING and THUMBSCREW. See also SCREW, EXTERNALLY RELIEVED BODY.

Manufacturer Information:

15599913	11862	GENERAL MOTORS CORP CHEVROLET MOTOR DIV SPECIAL PRODUCTS DEPT
15599929	11862	GENERAL MOTORS CORP CHEVROLET MOTOR DIV SPECIAL PRODUCTS DEPT
15599929	7X677	GENERAL MOTORS LLC

Techincal Specification:

THREAD SERIES DESIGNATOR	UNRC
NOMINAL THREAD DIAMETER	0.500 INCHES
THREAD QUANTITY PER INCH	13
THREAD CLASS	3A
THREAD DIRECTION	RIGHT-HAND
THREAD LENGTH	1.690 INCHES MINIMUM AND
	1.810 INCHES MAXIMUM
FASTENER LENGTH	24.470 INCHES MINIMUM AND
	24.530 INCHES MAXIMUM
MATERIAL	STEEL COMP 1015 OR
	STEEL COMP 1020 OVERALL
MATERIAL DOCUMENT AND CLASSIFICATION	SAE ASSN STD ALL MATERIAL RESPONSES OVERALL
SURFACE TREATMENT	CADMIUM AND
	CHROMATE OVERALL
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	GM 6184 M (5D240) FSCM 11862 MFR REF SINGLE TREATMENT RESPONSE OVERALL
HEAD STYLE	HEXAGON EXTENDED WASHER
HEAD HEIGHT	0.505 INCHES MAXIMUM
WIDTH BETWEEN FLATS	0.736 INCHES MINIMUM AND
	0.750 INCHES MAXIMUM
EXTENDED WASHER DIAMETER	1.000 INCHES MINIMUM AND
	1.030 INCHES MAXIMUM
EXTENDED WASHER THICKNESS	0.070 INCHES MINIMUM
LOCKING FEATURE	PATCH THREADS
POINT STYLE	FLAT
EXTERNALLY RELIEVED BODY DIAMETER QUANTITY	2
FIRST DIAMETER FROM HEAD	0.493 INCHES MINIMUM AND
	0.500 INCHES MAXIMUM
SECOND DIAMETER FROM HEAD	0.440 INCHES MINIMUM AND
	0.460 INCHES MAXIMUM
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER	0.280 INCHES MINIMUM AND
	0.320 INCHES MAXIMUM
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF SECOND DIAMETER	21.120 INCHES MAXIMUM
SPECIAL FEATURES	COLOR BLACK

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