5306-00-009-7617, BOLT,INTERNALLY RELIEVED BODY

5306-00-009-7616 BOLT,INTERNALLY RELIEVED BODY

National Stock Number:
5306-00-009-7617

Federal Supply Class:
5306

National Item Identification Number:
000097617

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:

A51G20540-11	26512	NORTHROP GRUMMAN SYSTEMS CORPORATION
A51G20540-11	61174	NORTHROP GRUMMAN SYSTEMS CORPORATION
A51G20540-11	79RG9	NORTHROP GRUMMAN SYSTEMS CORPORATION

Techincal Specification:

THREAD SERIES DESIGNATOR	UNJF
NOMINAL THREAD DIAMETER	0.250 INCHES
THREAD QUANTITY PER INCH	28
THREAD CLASS	3A
THREAD DIRECTION	RIGHT-HAND
THREAD LENGTH	0.340 INCHES MAXIMUM
FASTENER LENGTH	2.880 INCHES NOMINAL
MATERIAL	STEEL COMP XM-12 OVERALL
SURFACE TREATMENT	CHROMIUM HEAD
	CHROMIUM GRIP
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	QQ-C-320 FED SPEC 1ST TREATMENT RESPONSE HEAD
HARDNESS RATING	38.0 ROCKWELL C MINIMUM AND
	45.0 ROCKWELL C MAXIMUM OVERALL
STYLE DESIGNATOR	CONCENTRIC HOLE UNTHREADED
SHOULDER DIAMETER	0.3740 INCHES MINIMUM AND
	0.3745 INCHES MAXIMUM
SHOULDER LENGTH	2.540 INCHES NOMINAL
CONCENTRIC HOLE DEPTH	2.400 INCHES NOMINAL
CONCENTRIC HOLE DIAMETER	0.249 INCHES MINIMUM AND
	0.255 INCHES MAXIMUM
HEAD STYLE	ROUND W/WRENCH FLATS CHAMFERED
HEAD DIAMETER	0.750 INCHES NOMINAL
HEAD HEIGHT	0.125 INCHES NOMINAL
WIDTH BETWEEN FLATS	0.625 INCHES NOMINAL
DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER	2.760 INCHES NOMINAL FIRST HOLE
SHANK UNTHREADED HOLE DIAMETER	0.075 INCHES MINIMUM AND
	0.080 INCHES MAXIMUM FIRST HOLE

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