5306-00-938-6837, BOLT,SHOULDER

National Stock Number:
5306-00-938-6837

Federal Supply Class:
5306

National Item Identification Number:
009386837

Description:
BOLT,SHOULDER

Detail:
An externally threaded fastener whose threaded portion is of one nominal diameter, No. 10 (0.190 IN.) (5 mm) or larger. It has a round unthreaded neck or shank all or part of which is of greater diameter than the threaded portion. The head is not designed to be held or driven with an inserted drivers. A locking feature may be incorporated in the design of the head or threads. For items with a thread diameter smaller than No. 10 (0.190 IN.) (5 mm) and those items with an inserted drive head, use SCREW, SHOULDER. For items which are No. 10 (0.190 IN.) (5 mm) or larger in size and are both shouldered and have an externally relieved body, use BOLT, EXTERNALLY RELIEVED BODY. Excludes THUMBSCREW.

Manufacturer Information:

540C313-7

81755

LOCKHEED MARTIN CORPORATION

Techincal Specification:

THREAD SERIES DESIGNATOR	UNF
NOMINAL THREAD DIAMETER	0.250 INCHES
THREAD QUANTITY PER INCH	28
THREAD CLASS	3A
THREAD DIRECTION	RIGHT-HAND
THREAD LENGTH	0.500 INCHES MINIMUM
FASTENER LENGTH	1.947 INCHES NOMINAL
MATERIAL	STEEL COMP 4130 OR
	STEEL OVERALL
MATERIAL DOCUMENT AND CLASSIFICATION	SAE ASSN STD 1ST MATERIAL RESPONSE OR
	MIL-S-6049 MIL SPEC 2ND MATERIAL RESPONSE OR
	MIL-S-6050 MIL SPEC 2ND MATERIAL RESPONSE OR
	MIL-S-6098 MIL SPEC 2ND MATERIAL RESPONSE OR
	MIL-S-6758 MIL SPEC 2ND MATERIAL RESPONSE OVERALL
MINIMUM TENSILE STRENGTH	150000 POUNDS PER SQUARE INCH
HEAD STYLE	HEXAGON
HEAD HEIGHT	0.156 INCHES NOMINAL
WIDTH BETWEEN FLATS	0.500 INCHES NOMINAL
SHOULDER SHAPE	ROUND FIRST SHOULDER
SHOULDER DIAMETER	0.312 INCHES NOMINAL FIRST SHOULDER
SHOULDER LENGTH	1.062 INCHES NOMINAL FIRST SHOULDER
DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER	1.947 INCHES NOMINAL FIRST HOLE
SHANK UNTHREADED HOLE DIAMETER	0.076 INCHES MINIMUM AND
	0.082 INCHES MAXIMUM FIRST HOLE
THE MANUFACTURERS DATA
MANUFACTURERS CODE	81755
DESIGN CONTROL REFERENCE	540C313-7

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