5306-00-142-4848, BOLT,EXTERNALLY RELIEVED BODY

National Stock Number:
5306-00-142-4848

Federal Supply Class:
5306

National Item Identification Number:
001424848

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:

11610285

19207

U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM

Techincal Specification:

DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER	1.760 INCHES NOMINAL
EXTENDED WASHER DIAMETER	0.875 INCHES NOMINAL
EXTERNALLY RELIEVED BODY DIAMETER QUANTITY	1
EXTENDED WASHER THICKNESS	0.140 INCHES NOMINAL
FASTENER LENGTH	2.650 INCHES NOMINAL
FIRST DIAMETER FROM HEAD	0.460 INCHES MINIMUM AND 0.470 INCHES MAXIMUM
HARDNESS RATING	32.0 ROCKWELL C MINIMUM AND 37.0 ROCKWELL C MAXIMUM OVERALL
HEAD HEIGHT	0.590 INCHES NOMINAL
HEAD STYLE	DOUBLE HEXAGON EXTENDED WASHER
MATERIAL DOCUMENT AND CLASSIFICATION	SAE ASSN STD ALL MATERIAL RESPONSES OVERALL
MATERIAL	STEEL COMP 4140 OR STEEL COMP 8640 OR STEEL COMP 8637 OVERALL
NOMINAL THREAD DIAMETER	0.562 INCHES
WIDTH BETWEEN FLATS	0.703 INCHES MINIMUM
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	MIL-P-16232,TYPE M CLASS 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENT	PHOSPHATE OVERALL
THREAD CLASS	3A
THREAD DIRECTION	RIGHT-HAND
THREAD LENGTH	0.890 INCHES NOMINAL
THREAD QUANTITY PER INCH	18
THREAD SERIES DESIGNATOR	UNF

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