5306-00-935-7558, BOLT,INTERNALLY RELIEVED BODY

National Stock Number:
5306-00-935-7558

Federal Supply Class:
5306

National Item Identification Number:
009357558

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:

B3522-20	16128	GICHNER SYSTEMS GROUP INC GICHNER MOBILIZER DIV
B3522-20	29381	GICHNER SYSTEMS GROUP, INC.

Techincal Specification:

CONCENTRIC HOLE DEPTH	1.250 INCHES MINIMUM AND 1.375 INCHES MAXIMUM
CONCENTRIC HOLE DIAMETER	0.250 INCHES NOMINAL
FASTENER LENGTH	1.375 INCHES NOMINAL
HARDNESS RATING	32.0 ROCKWELL C MINIMUM AND 35.0 ROCKWELL C MAXIMUM OVERALL
HEAD HEIGHT	0.188 INCHES NOMINAL
HEAD STYLE	HEXAGON
MATERIAL DOCUMENT AND CLASSIFICATION	SAE ASSN STD 1ST MATERIAL RESPONSE OR 66 FED STD 2ND MATERIAL RESPONSE OVERALL
MATERIAL	STEEL COMP 1144 OR STEEL COMP 4140 OVERALL
NOMINAL THREAD DIAMETER	0.750 INCHES
NOMINAL THREAD SIZE	0.250 INCHES CONCENTRIC HOLE
SHOULDER DIAMETER	1.240 INCHES MINIMUM AND 1.250 INCHES MAXIMUM
SHOULDER LENGTH	0.062 INCHES MINIMUM AND 0.067 INCHES MAXIMUM
SPECIAL FEATURES	CONCENTRIC HOLE THREAD IS LEFT HAND
WIDTH BETWEEN FLATS	2.000 INCHES NOMINAL
STYLE DESIGNATOR	CONCENTRIC HOLE THREADED
THREAD CLASS	3A
THREAD DIRECTION	LEFT-HAND
THREAD LENGTH	1.058 INCHES MINIMUM AND 1.068 INCHES MAXIMUM
THREAD SERIES DESIGNATOR	UNIFIED NATIONAL COARSE (UNC)
THREAD QUANTITY PER INCH	10
THREAD SERIES	UNF CONCENTRIC HOLE
THREADS PER INCH	28 CONCENTRIC HOLE

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