5306-01-144-6259, BOLT,SHOULDER

5305-01-144-6258 SCREW,EXTERNALLY RELIEVED BODY

National Stock Number:
5306-01-144-6259

Federal Supply Class:
5306

National Item Identification Number:
011446259

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:

72688-6-12	56878	SPS TECHNOLOGIES, LLC
72688-6-12	80539	SPS TECHNOLOGIES, LLC

Techincal Specification:

THREAD SERIES DESIGNATOR	UNJF
NOMINAL THREAD DIAMETER	0.312 INCHES
THREAD QUANTITY PER INCH	24
THREAD CLASS	3A
THREAD DIRECTION	RIGHT-HAND
THREAD LENGTH	0.368 INCHES MINIMUM AND
	0.398 INCHES MAXIMUM
FASTENER LENGTH	1.289 INCHES MINIMUM AND
	1.309 INCHES MAXIMUM
MATERIAL	STEEL COMP E4340 OR
	STEEL COMP 8740 OVERALL
MATERIAL DOCUMENT AND CLASSIFICATION	MIL-S-5000 MIL SPEC 1ST MATERIAL RESPONSE OR
	MIL-S-6049 MIL SPEC 2ND MATERIAL RESPONSE OVERALL
SURFACE TREATMENT	CADMIUM AND
	CHROMATE OVERALL
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	QQ-P-416 TY2 CL3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
HARDNESS RATING	40.0 ROCKWELL C MINIMUM AND
	43.0 ROCKWELL C MAXIMUM OVERALL
HEAD STYLE	CROWNED HEXAGON
HEAD HEIGHT	0.204 INCHES MAXIMUM
WIDTH BETWEEN FLATS	0.553 INCHES MINIMUM AND
	0.564 INCHES MAXIMUM
LOCKING FEATURE	DETENT RING GRIP
SHOULDER SHAPE	ROUND FIRST SHOULDER
SHOULDER DIAMETER	0.3733 INCHES MINIMUM AND
	0.3742 INCHES MAXIMUM FIRST SHOULDER
SHOULDER LENGTH	0.750 INCHES MINIMUM AND
	0.756 INCHES MAXIMUM FIRST SHOULDER
DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER	1.180 INCHES MINIMUM AND
	1.212 INCHES MAXIMUM FIRST HOLE
SHANK UNTHREADED HOLE DIAMETER	0.081 INCHES NOMINAL FIRST HOLE

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