5306-00-064-8418, BOLT,EXTERNALLY RELIEVED BODY

5306-00-064-8419 BOLT,EXTERNALLY RELIEVED BODY

National Stock Number:
5306-00-064-8418

Federal Supply Class:
5306

National Item Identification Number:
000648418

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:

2146074

10001

NAVAIR AND NAVSEA MANAGED ORIGINAL DESIGN ACTIVITY DWG NOT MATERIAL/PARTS SUPPLIER

Techincal Specification:

DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF SECOND DIAMETER	0.438 INCHES NOMINAL
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER	0.062 INCHES NOMINAL
EXTERNALLY RELIEVED BODY DIAMETER QUANTITY	2
FASTENER LENGTH	0.990 INCHES MINIMUM AND 1.010 INCHES MAXIMUM
FIRST DIAMETER FROM HEAD	0.224 INCHES MINIMUM AND 0.234 INCHES MAXIMUM
HARDNESS RATING	38.0 ROCKWELL C MINIMUM AND 45.0 ROCKWELL C MAXIMUM OVERALL
HEAD HEIGHT	0.250 INCHES MAXIMUM
HEAD STYLE	HEXAGON
MATERIAL DOCUMENT AND CLASSIFICATION	SAE ASSN STD SINGLE MATERIAL RESPONSE OVERALL
MATERIAL	STEEL COMP 4140 OVERALL
NOMINAL THREAD DIAMETER	0.250 INCHES
SECOND DIAMETER FROM HEAD	0.250 INCHES NOMINAL
WIDTH BETWEEN FLATS	0.500 INCHES NOMINAL
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	96906/MIL-P-16232 TYPE M CLASS 2 MFR REF SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENT	PHOSPHATE OVERALL
THREAD CLASS	3A
THREAD DIRECTION	RIGHT-HAND
THREAD LENGTH	0.552 INCHES MINIMUM AND 0.572 INCHES MAXIMUM
THREAD QUANTITY PER INCH	20
THREAD SERIES DESIGNATOR	UNC

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