5306-01-303-3902, BOLT,EXTERNALLY RELIEVED BODY

National Stock Number:
5306-01-303-3902

Federal Supply Class:
5306

National Item Identification Number:
013033902

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:

74D291033-2009	76301	THE BOEING COMPANY
74D291033-2025	76301	THE BOEING COMPANY

Techincal Specification:

DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF SECOND DIAMETER	0.980 INCHES NOMINAL
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF THIRD DIAMETER	1.455 INCHES NOMINAL
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER	0.400 INCHES NOMINAL
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FOURTH DIAMETER	1.580 INCHES NOMINAL
DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER	1.200 INCHES NOMINAL FIRST HOLE
EXTERNALLY RELIEVED BODY DIAMETER QUANTITY	4
FASTENER LENGTH	3.900 INCHES NOMINAL
FIRST DIAMETER FROM HEAD	0.470 INCHES NOMINAL
FOURTH DIAMETER FROM HEAD	1.020 INCHES MINIMUM AND 1.030 INCHES MAXIMUM
HEAD DIAMETER	1.000 INCHES NOMINAL
HEAD HEIGHT	0.470 INCHES NOMINAL
HEAD STYLE	PAN
HOLE CONFIGURATION STYLE	ROUND LONGITUDINAL HOLE
HOLE DIAMETER	0.270 INCHES NOMINAL
HOLE QUANTITY	1
HOLE TYPE	DRILLED
MATERIAL DOCUMENT AND CLASSIFICATION	AMS 5629 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
MATERIAL	STEEL COMP XM-13 OVERALL
NOMINAL THREAD DIAMETER	1.125 INCHES
SECOND DIAMETER FROM HEAD	1.015 INCHES MINIMUM AND 1.025 INCHES MAXIMUM
SHANK UNTHREADED HOLE DIAMETER	0.250 INCHES MINIMUM AND 0.256 INCHES MAXIMUM FIRST HOLE
SPECIAL FEATURES	COUNTERSUNK HOLE AT THE END OF THREADS,0.095 IN. MIN,0.155 IN. MAX DIA; GROOVE,0.580 IN. LG FROM END,1.030 IN. MIN,1.040 IN. MAX DIA
THIRD DIAMETER FROM HEAD	1.045 INCHES MINIMUM AND 1.055 INCHES MAXIMUM
THREAD DIRECTION	RIGHT-HAND
THREAD CLASS	3A
THREAD LENGTH	1.720 INCHES NOMINAL
THREAD SERIES DESIGNATOR	UN
THREAD QUANTITY PER INCH	20

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