5306-01-225-8038, BOLT,EXTERNALLY RELIEVED BODY

National Stock Number:
5306-01-225-8038

Federal Supply Class:
5306

National Item Identification Number:
012258038

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:

126B262H01	48306	NORTHROP GRUMMAN SUPPORT SERVICES CORP
126B262H01	54372	RIDGE ENGINEERING, LLC.
126B262H01	55332	A M MACHINE CO INC
126B262H01	97942	NORTHROP GRUMMAN SYSTEMS CORPORATION

Techincal Specification:

DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER	0.190 INCHES NOMINAL
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF SECOND DIAMETER	0.710 INCHES NOMINAL
EXTERNALLY RELIEVED BODY DIAMETER QUANTITY	1
FASTENER LENGTH	1.090 INCHES NOMINAL
FIRST DIAMETER FROM HEAD	0.285 INCHES MINIMUM AND 0.290 INCHES MAXIMUM
HARDNESS RATING	26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM OVERALL
HEAD HEIGHT	0.172 INCHES MINIMUM AND 0.204 INCHES MAXIMUM
HEAD STYLE	HEXAGON
MATERIAL DOCUMENT AND CLASSIFICATION	MIL-S-18732 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
MATERIAL	STEEL COMP 431 OVERALL
MINIMUM TENSILE STRENGTH	125000 POUNDS PER SQUARE INCH
NOMINAL THREAD DIAMETER	0.312 INCHES
SECOND DIAMETER FROM HEAD	0.312 INCHES NOMINAL
WIDTH BETWEEN FLATS	0.490 INCHES MINIMUM AND 0.502 INCHES MAXIMUM
SURFACE TREATMENT	PASSIVATE OVERALL
THREAD DIRECTION	RIGHT-HAND
THREAD CLASS	3A
THREAD LENGTH	0.380 INCHES NOMINAL
THREAD SERIES DESIGNATOR	UNF
THREAD QUANTITY PER INCH	24

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