5306-00-443-5767, BOLT,SHOULDER

National Stock Number:
5306-00-443-5767

Federal Supply Class:
5306

National Item Identification Number:
004435767

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:

S1620-64175-3

78286

SIKORSKY AIRCRAFT CORPORATION

Techincal Specification:

DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER	2.725 INCHES NOMINAL FIRST HOLE
FASTENER LENGTH	2.855 INCHES NOMINAL
FEATURES PROVIDED	CASEHARDENED
HARDNESS RATING	26.0 ROCKWELL C MINIMUM AND 33.0 ROCKWELL C MAXIMUM OVERALL
HEAD HEIGHT	0.281 INCHES NOMINAL
HEAD STYLE	HEXAGON
MATERIAL DOCUMENT AND CLASSIFICATION	MIL-S-18732 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
MATERIAL	STEEL COMP 431 OVERALL
MINIMUM TENSILE STRENGTH	125000 POUNDS PER SQUARE INCH
NOMINAL THREAD DIAMETER	0.375 INCHES
SHANK UNTHREADED HOLE DIAMETER	0.106 INCHES NOMINAL FIRST HOLE
SHOULDER DIAMETER	0.4986 INCHES MINIMUM AND 0.4991 INCHES MAXIMUM FIRST SHOULDER
SHOULDER LENGTH	2.371 INCHES NOMINAL FIRST SHOULDER
SHOULDER SHAPE	ROUND FIRST SHOULDER
SPECIAL FEATURES	SPHERICAL RADIUS ON END OF SHOULDER
WIDTH BETWEEN FLATS	0.750 INCHES NOMINAL
THREAD DIRECTION	RIGHT-HAND
THREAD CLASS	3A
THREAD LENGTH	0.430 INCHES MINIMUM
THREAD SERIES DESIGNATOR	UNF
THREAD QUANTITY PER INCH	24

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