5306-00-008-8971, BOLT,INTERNALLY RELIEVED BODY

National Stock Number:
5306-00-008-8971

Federal Supply Class:
5306

National Item Identification Number:
000088971

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:

A51M42537-11	26512	NORTHROP GRUMMAN SYSTEMS CORPORATION
A51M42537-11	61174	NORTHROP GRUMMAN SYSTEMS CORPORATION
A51M42537-11	79RG9	NORTHROP GRUMMAN SYSTEMS CORPORATION

Techincal Specification:

CONCENTRIC HOLE DIAMETER	0.196 INCHES MINIMUM AND 0.201 INCHES MAXIMUM
CONCENTRIC HOLE DEPTH	1.480 INCHES NOMINAL
COUNTERBORE DIAMETER	0.740 INCHES NOMINAL
COUNTERBORE DEPTH	0.110 INCHES NOMINAL
DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER	1.786 INCHES MINIMUM AND 1.796 INCHES MAXIMUM FIRST HOLE
FASTENER LENGTH	1.957 INCHES MINIMUM AND 1.967 INCHES MAXIMUM
HEAD HEIGHT	0.188 INCHES NOMINAL
HEAD STYLE	HEXAGON
MATERIAL DOCUMENT AND CLASSIFICATION	G-1010,FSCM 26512 MFR REF SINGLE MATERIAL RESPONSE OVERALL
MATERIAL	STEEL OVERALL
NOMINAL THREAD DIAMETER	0.375 INCHES
SHANK UNTHREADED HOLE DIAMETER	0.110 INCHES MINIMUM AND 0.115 INCHES MAXIMUM FIRST HOLE
SHOULDER DIAMETER	0.7476 INCHES MINIMUM AND 0.7482 INCHES MAXIMUM
SHOULDER LENGTH	1.519 INCHES MINIMUM AND 1.529 INCHES MAXIMUM
STYLE DESIGNATOR	COUNTERBORE UNTHREADED
SURFACE TREATMENT	CADMIUM OVERALL
THREAD CLASS	3A
THREAD DIRECTION	RIGHT-HAND
THREAD LENGTH	0.334 INCHES MAXIMUM
THREAD QUANTITY PER INCH	24
THREAD SERIES DESIGNATOR	UNIFIED NATIONAL JOINT FINE (UNJF)
WIDTH BETWEEN FLATS	0.865 INCHES MINIMUM AND 0.877 INCHES MAXIMUM

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