5306-01-306-2786, BOLT,INTERNALLY RELIEVED BODY

National Stock Number:
5306-01-306-2786

Federal Supply Class:
5306

National Item Identification Number:
013062786

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:

65850-05221-105	2V343	APEX MANUFACTURING COMPANY, INC.
65850-05221-105	4GP55	ACUFAST AIRCRAFT PRODUCTS
65850-05221-105	78286	SIKORSKY AIRCRAFT CORPORATION

Techincal Specification:

DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER	0.265 INCHES NOMINAL FIRST HOLE
CONCENTRIC HOLE DIAMETER	0.625 INCHES NOMINAL
FASTENER LENGTH	5.015 INCHES NOMINAL
HARDNESS RATING	39.0 ROCKWELL C MINIMUM AND 43.0 ROCKWELL C MAXIMUM OVERALL
HEAD HEIGHT	0.300 INCHES NOMINAL
HEAD DIAMETER	1.625 INCHES NOMINAL
HEAD STYLE	ROUND W/WRENCH FLATS CHAMFERED
MATERIAL DOCUMENT AND CLASSIFICATION	MIL-S-8844 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
MATERIAL	STEEL COMP 4340 OVERALL
MINIMUM TENSILE STRENGTH	180000 POUNDS PER SQUARE INCH
NOMINAL THREAD DIAMETER	1.000 INCHES
SHANK UNTHREADED HOLE DIAMETER	0.141 INCHES MINIMUM AND 0.151 INCHES MAXIMUM FIRST HOLE
WIDTH BETWEEN FLATS	1.239 INCHES MINIMUM AND 1.252 INCHES MAXIMUM
STYLE DESIGNATOR	CONCENTRIC HOLE UNTHREADED
THREAD CLASS	3A
THREAD DIRECTION	RIGHT-HAND
THREAD LENGTH	0.778 INCHES NOMINAL
THREAD SERIES DESIGNATOR	UNIFIED NATIONAL JOINT FINE (UNJF)
THREAD QUANTITY PER INCH	12

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