5306-00-815-8014, BOLT,EXTERNALLY RELIEVED BODY

National Stock Number:
5306-00-815-8014

Federal Supply Class:
5306

National Item Identification Number:
008158014

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:

920208-1	98897	LOCKHEED MARTIN CORP
AT-1-1/4PLUG	77445	RTX CORPORATION

Techincal Specification:

DISTANCE FROM CENTERLINE TO FLAT	0.240 INCHES MINIMUM AND 0.270 INCHES MAXIMUM
DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER	1.330 INCHES NOMINAL FIRST HOLE
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF SECOND DIAMETER	1.050 INCHES NOMINAL
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF THIRD DIAMETER	0.110 INCHES MINIMUM AND 0.140 INCHES MAXIMUM
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER	0.090 INCHES MINIMUM AND 0.120 INCHES MAXIMUM
EXTERNALLY RELIEVED BODY DIAMETER QUANTITY	3
FASTENER LENGTH	1.450 INCHES NOMINAL
FIRST DIAMETER FROM HEAD	0.300 INCHES MINIMUM AND 0.304 INCHES MAXIMUM
HEAD DIAMETER	0.700 INCHES NOMINAL
HEAD HEIGHT	0.190 INCHES NOMINAL
HEAD STYLE	DEE
MATERIAL DOCUMENT AND CLASSIFICATION	MIL-S-5626,COND C4 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
MATERIAL	STEEL COMP 4140 OVERALL
NOMINAL THREAD DIAMETER	0.250 INCHES
SECOND DIAMETER FROM HEAD	0.373 INCHES MINIMUM AND 0.374 INCHES MAXIMUM
SHANK UNTHREADED HOLE DIAMETER	0.078 INCHES NOMINAL FIRST HOLE
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	0491,TY 2,CL A FSCM 36659 MFR REF SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENT	CADMIUM OVERALL
THIRD DIAMETER FROM HEAD	0.186 INCHES MINIMUM AND 0.196 INCHES MAXIMUM
THREAD CLASS	3A
THREAD DIRECTION	RIGHT-HAND
THREAD LENGTH	0.260 INCHES MINIMUM AND 0.290 INCHES MAXIMUM
THREAD SERIES DESIGNATOR	UNF
THREAD QUANTITY PER INCH	28

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