5306-00-630-1823, BOLT,EXTERNALLY RELIEVED BODY

National Stock Number:
5306-00-630-1823

Federal Supply Class:
5306

National Item Identification Number:
006301823

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:

13277

27315

MORRIS MATERIAL HANDLING, INC.

Techincal Specification:

THREAD SERIES DESIGNATOR	UNF
NOMINAL THREAD DIAMETER	0.438 INCHES
THREAD QUANTITY PER INCH	20
THREAD CLASS	3A
THREAD DIRECTION	RIGHT-HAND
THREAD LENGTH	0.865 INCHES MINIMUM AND
	0.885 INCHES MAXIMUM
FASTENER LENGTH	3.365 INCHES MINIMUM AND
	3.385 INCHES MAXIMUM
MATERIAL	STEEL COMP 4140 OVERALL
MATERIAL DOCUMENT AND CLASSIFICATION	66 FED STD SINGLE MATERIAL RESPONSE OVERALL
HARDNESS RATING	33.0 ROCKWELL C MINIMUM AND
	36.0 ROCKWELL C MAXIMUM OVERALL
HEAD STYLE	DEE CHAMFER
HEAD DIAMETER	0.740 INCHES MINIMUM AND
	0.760 INCHES MAXIMUM
HEAD HEIGHT	0.240 INCHES MINIMUM AND
	0.260 INCHES MAXIMUM
DISTANCE FROM CENTERLINE TO FLAT	0.271 INCHES MINIMUM AND
	0.291 INCHES MAXIMUM
EXTERNALLY RELIEVED BODY DIAMETER QUANTITY	4
FIRST DIAMETER FROM HEAD	0.450 INCHES MINIMUM AND
	0.452 INCHES MAXIMUM
SECOND DIAMETER FROM HEAD	0.390 INCHES MINIMUM AND
	0.395 INCHES MAXIMUM
THIRD DIAMETER FROM HEAD	0.452 INCHES MINIMUM AND
	0.453 INCHES MAXIMUM
FOURTH DIAMETER FROM HEAD	0.390 INCHES MINIMUM AND
	0.395 INCHES MAXIMUM
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER	0.115 INCHES MINIMUM AND
	0.135 INCHES MAXIMUM
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF SECOND DIAMETER	1.178 INCHES MINIMUM AND
	1.198 INCHES MAXIMUM
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF THIRD DIAMETER	1.552 INCHES MINIMUM AND
	1.572 INCHES MAXIMUM
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FOURTH DIAMETER	2.490 INCHES MINIMUM AND
	2.510 INCHES MAXIMUM

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