5306-99-767-3809, BOLT,EXTERNALLY RELIEVED BODY

5306-99-767-3808 BOLT,EXTERNALLY RELIEVED BODY

National Stock Number:
5306-99-767-3809

Federal Supply Class:
5306

National Item Identification Number:
997673809

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:

BLT5039	K0378	ROLLS-ROYCE PLC
BLT5039 ZZ	K0378	ROLLS-ROYCE PLC

Techincal Specification:

DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER	0.180 INCHES MINIMUM AND 0.210 INCHES MAXIMUM
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF SECOND DIAMETER	0.923 INCHES MINIMUM AND 0.943 INCHES MAXIMUM
FASTENER LENGTH	1.525 INCHES MINIMUM AND 1.545 INCHES MAXIMUM
FIRST DIAMETER FROM HEAD	0.246 INCHES MINIMUM AND 0.249 INCHES MAXIMUM
HEAD HEIGHT	0.146 INCHES MINIMUM AND 0.166 INCHES MAXIMUM
HEAD STYLE	ERR-090
MATERIAL DOCUMENT AND CLASSIFICATION	ROLLS ROYCE LTD HR650 MFR REF SINGLE MATERIAL RESPONSE
MATERIAL	STEEL OVERALL
NOMINAL THREAD DIAMETER	0.250 INCHES
SECOND DIAMETER FROM HEAD	0.190 INCHES MINIMUM AND 0.195 INCHES MAXIMUM
WIDTH BETWEEN FLATS	0.430 INCHES MINIMUM AND 0.439 INCHES MAXIMUM
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	DTD 939 MIL STD SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENT	SILVER OVERALL
THREAD CLASS	3A
THREAD DIRECTION	RIGHT-HAND
THREAD LENGTH	0.602 INCHES NOMINAL
THREAD QUANTITY PER INCH	28
THREAD SERIES DESIGNATOR	UNJF

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