5306-00-326-7660, BOLT,SHOULDER

National Stock Number:
5306-00-326-7660

Federal Supply Class:
5306

National Item Identification Number:
003267660

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:

2-73843-1	0JRC1	NORTHROP GRUMMAN TECHNICAL SERVICES, INC.
2-73843-1	6M132	SKYSPARES PARTS INC
2-73843-1	76823	NORTHROP GRUMMAN SYSTEMS CORPORATION
2-73843-1	79U29	NORTHROP GRUMMAN SYSTEMS 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	0.255 INCHES MINIMUM
FASTENER LENGTH	2.220 INCHES MINIMUM AND
	2.230 INCHES MAXIMUM
MATERIAL	STEEL OVERALL
MATERIAL DOCUMENT AND CLASSIFICATION	MIL-S-5000 COND C4 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
HARDNESS RATING	53.0 ROCKWELL C MAXIMUM OVERALL
MINIMUM TENSILE STRENGTH	160000 POUNDS PER SQUARE INCH
HEAD STYLE	SQUARE
HEAD HEIGHT	0.100 INCHES NOMINAL
WIDTH BETWEEN FLATS	0.750 INCHES NOMINAL
LOCKING FEATURE	PELLET THREADS
SHOULDER SHAPE	ROUND FIRST SHOULDER
SHOULDER DIAMETER	0.4990 INCHES MINIMUM AND
	0.5000 INCHES MAXIMUM FIRST SHOULDER
	0.3738 INCHES MINIMUM AND
	0.3743 INCHES MAXIMUM SECOND SHOULDER
SHOULDER LENGTH	0.910 INCHES MINIMUM AND
	0.920 INCHES MAXIMUM FIRST SHOULDER
	0.755 INCHES NOMINAL SECOND SHOULDER
DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER	2.120 INCHES MINIMUM AND
	2.130 INCHES MAXIMUM FIRST HOLE
SHANK UNTHREADED HOLE DIAMETER	0.076 INCHES NOMINAL FIRST HOLE
SPECIAL FEATURES	SHOULDER IS CASEHARDENED

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