5306-01-468-4884, BOLT,EXTERNALLY RELIEVED BODY

National Stock Number:
5306-01-468-4884

Federal Supply Class:
5306

National Item Identification Number:
014684884

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:

12386593

19207

U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM

Techincal Specification:

DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER	3.620 INCHES NOMINAL FIRST HOLE
EXTENDED WASHER DIAMETER	1.120 INCHES NOMINAL
EXTERNALLY RELIEVED BODY DIAMETER QUANTITY	2
EXTENDED WASHER THICKNESS	0.190 INCHES NOMINAL
FASTENER LENGTH	3.340 INCHES NOMINAL
FIRST DIAMETER FROM HEAD	0.500 INCHES NOMINAL
HARDNESS RATING	33.0 ROCKWELL C MINIMUM OVERALL AND 38.0 ROCKWELL C MAXIMUM OVERALL
HEAD HEIGHT	0.590 INCHES NOMINAL
HEAD STYLE	HEXAGON EXTENDED WASHER
NOMINAL THREAD DIAMETER	0.500 INCHES
MATERIAL DOCUMENT AND CLASSIFICATION	ASTM A829 ASSN STD SINGLE MATERIAL RESPONSE OVERALL OR ASTM A332 ASSN STD SINGLE MATERIAL RESPONSE OVERALL OR ASTM A331 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
MATERIAL	STEEL COMP 4130 OVERALL OR STEEL COMP 4135 OVERALL OR STEEL COMP 4137 OVERALL OR STEEL COMP 4140 OVERALL
SECOND DIAMETER FROM HEAD	0.380 INCHES NOMINAL
SHANK UNTHREADED HOLE DIAMETER	0.125 INCHES MINIMUM FIRST HOLE AND 0.129 INCHES MAXIMUM FIRST HOLE
WIDTH BETWEEN FLATS	0.750 INCHES NOMINAL
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	ASTM B633,TYPE II,SC2 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENT	ZINC OVERALL
THREAD DIRECTION	RIGHT-HAND
THREAD CLASS	2A
THREAD LENGTH	2.680 INCHES NOMINAL
THREAD QUANTITY PER INCH	13
THREAD SERIES DESIGNATOR	UNC

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