5306-00-422-1543, BOLT,EXTERNALLY RELIEVED BODY

National Stock Number:
5306-00-422-1543

Federal Supply Class:
5306

National Item Identification Number:
004221543

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:

125S229

0AHP5

CURTISS-WRIGHT CONTROLS, INC.

Techincal Specification:

DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER	0.730 INCHES MINIMUM AND 0.740 INCHES MAXIMUM
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF SECOND DIAMETER	0.370 INCHES NOMINAL
CRITICALITY CODE JUSTIFICATION	AAWC
EXTERNALLY RELIEVED BODY DIAMETER QUANTITY	2
FASTENER LENGTH	1.640 INCHES MINIMUM AND 1.650 INCHES MAXIMUM
FIRST DIAMETER FROM HEAD	0.5095 INCHES MINIMUM AND 0.5100 INCHES MAXIMUM
HARDNESS RATING	32.0 ROCKWELL C MINIMUM AND 36.0 ROCKWELL C MAXIMUM OVERALL
HEAD DIAMETER	0.880 INCHES NOMINAL
HEAD HEIGHT	0.250 INCHES NOMINAL
HEAD STYLE	ROUND W/WRENCH FLATS CHAMFERED
MATERIAL DOCUMENT AND CLASSIFICATION	AMS 6322 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
MATERIAL	STEEL COMP 8740 OVERALL
NOMINAL THREAD DIAMETER	0.438 INCHES
SECOND DIAMETER FROM HEAD	0.360 INCHES NOMINAL
SPECIAL FEATURES	OUTER EDGE OF ONE WRENCH FLAT CHAMFERED 0.085 IN. LG BY 60 DEG
WIDTH BETWEEN FLATS	0.530 INCHES NOMINAL
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	AMS 2400-1 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENT	CADMIUM OVERALL
THREAD CLASS	3A
THREAD DIRECTION	RIGHT-HAND
THREAD LENGTH	0.540 INCHES MINIMUM
THREAD SERIES DESIGNATOR	UNF
THREAD QUANTITY PER INCH	20

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