5306-00-003-3873, BOLT,INTERNALLY RELIEVED BODY

National Stock Number:
5306-00-003-3873

Federal Supply Class:
5306

National Item Identification Number:
000033873

Description:
BOLT,INTERNALLY RELIEVED BODY

Detail:
An externally threaded fastener whose external threaded portion is of one nominal diameter. It has a concentric hole along the longitudinal centerline which may extend a part or the full length of the bolt. The concentric hole along the centerline may be counterbored and/or internally threaded at the head end or the bolt end. The head is designed to be held or driven by an external and/or internal driver. For items having a hole(s) perpendicular to the axis which meet the concentric hole along the longitudinal centerline, see BOLT, FLUID PASSAGE.

Manufacturer Information:

A51H40524-11	26512	NORTHROP GRUMMAN SYSTEMS CORPORATION
A51H40524-11	61174	NORTHROP GRUMMAN SYSTEMS CORPORATION
A51H40524-11	79RG9	NORTHROP GRUMMAN SYSTEMS CORPORATION

Techincal Specification:

CONCENTRIC HOLE DIAMETER	0.311 INCHES MINIMUM AND 0.313 INCHES MAXIMUM
CONCENTRIC HOLE DEPTH	1.690 INCHES NOMINAL
DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER	2.031 INCHES MINIMUM AND 2.041 INCHES MAXIMUM FIRST HOLE
FASTENER LENGTH	2.223 INCHES MINIMUM AND 2.233 INCHES MAXIMUM
HEAD DIAMETER	0.800 INCHES NOMINAL
HEAD HEIGHT	0.156 INCHES NOMINAL
HEAD STYLE	ROUND W/WRENCH FLATS
NOMINAL THREAD DIAMETER	0.375 INCHES
SHANK UNTHREADED HOLE DIAMETER	0.106 INCHES MINIMUM AND 0.116 INCHES MAXIMUM FIRST HOLE
SHOULDER DIAMETER	0.623 INCHES MINIMUM AND 0.624 INCHES MAXIMUM
SHOULDER LENGTH	1.786 INCHES MINIMUM AND 1.796 INCHES MAXIMUM
THREAD CLASS	3A
THREAD LENGTH	0.333 INCHES MINIMUM
THREAD QUANTITY PER INCH	24
THREAD SERIES DESIGNATOR	UNIFIED NATIONAL JOINT FINE (UNJF)
WIDTH BETWEEN FLATS	0.678 INCHES MINIMUM AND 0.690 INCHES MAXIMUM

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