5306-00-298-4872, BOLT,EXTERNALLY RELIEVED BODY

5306-00-298-4874 BOLT,EXTERNALLY RELIEVED BODY

National Stock Number:
5306-00-298-4872

Federal Supply Class:
5306

National Item Identification Number:
002984872

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:

125D174

0AHP5

CURTISS-WRIGHT CONTROLS, INC.

Techincal Specification:

DISTANCE FROM CENTERLINE TO FLAT	0.531 INCHES NOMINAL
DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER	1.080 INCHES NOMINAL FIRST HOLE
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF SECOND DIAMETER	0.420 INCHES MINIMUM AND 0.460 INCHES MAXIMUM
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF THIRD DIAMETER	0.480 INCHES MINIMUM AND 0.560 INCHES MAXIMUM
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER	0.120 INCHES MINIMUM AND 0.180 INCHES MAXIMUM
EXTERNALLY RELIEVED BODY DIAMETER QUANTITY	3
FASTENER LENGTH	1.220 INCHES NOMINAL
FIRST DIAMETER FROM HEAD	0.494 INCHES MINIMUM AND 0.500 INCHES MAXIMUM
HARDNESS RATING	32.0 ROCKWELL C MINIMUM AND 36.0 ROCKWELL C MAXIMUM OVERALL
HEAD DIAMETER	0.871 INCHES MINIMUM AND 0.875 INCHES MAXIMUM
HEAD HEIGHT	0.260 INCHES NOMINAL
HEAD STYLE	DEE CHAMFER
MATERIAL	STEEL OVERALL
NOMINAL THREAD DIAMETER	0.500 INCHES
SECOND DIAMETER FROM HEAD	0.434 INCHES MINIMUM AND 0.438 INCHES MAXIMUM
SHANK UNTHREADED HOLE DIAMETER	0.094 INCHES NOMINAL FIRST HOLE
SURFACE TREATMENT	CADMIUM OVERALL
THIRD DIAMETER FROM HEAD	0.491 INCHES MINIMUM AND 0.500 INCHES MAXIMUM
THREAD CLASS	3A
THREAD DIRECTION	RIGHT-HAND
THREAD LENGTH	0.700 INCHES MINIMUM
THREAD QUANTITY PER INCH	20
THREAD SERIES DESIGNATOR	UNF

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