5306-01-235-0157, BOLT,INTERNALLY RELIEVED BODY

National Stock Number:
5306-01-235-0157

Federal Supply Class:
5306

National Item Identification Number:
012350157

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:

1292033-103	98897	LOCKHEED MARTIN CORP
ACL50015-549	77445	RTX CORPORATION

Techincal Specification:

THREAD SERIES DESIGNATOR	UNJF
NOMINAL THREAD DIAMETER	0.375 INCHES
THREAD QUANTITY PER INCH	24
THREAD CLASS	3A
THREAD DIRECTION	RIGHT-HAND
THREAD LENGTH	0.366 INCHES MINIMUM AND
	0.416 INCHES MAXIMUM
FASTENER LENGTH	3.501 INCHES MINIMUM AND
	3.531 INCHES MAXIMUM
MATERIAL	STEEL COMP E4340 OR
	STEEL COMP 4140 OR
	STEEL COMP 8740 OR
	STEEL COMP 8735 OR
	STEEL COMP 6150 OVERALL
SURFACE TREATMENT	CADMIUM AND
	CHROMATE OVERALL
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	QQ-P-416,TYPE 2 CLASS 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
MINIMUM TENSILE STRENGTH	160000 POUNDS PER SQUARE INCH
STYLE DESIGNATOR	CONCENTRIC HOLE UNTHREADED
CONCENTRIC HOLE DIAMETER	0.2515 INCHES MINIMUM AND
	0.2525 INCHES MAXIMUM
HEAD STYLE	HEXAGON
HEAD HEIGHT	0.188 INCHES MINIMUM AND
	0.203 INCHES MAXIMUM
WIDTH BETWEEN FLATS	0.553 INCHES MINIMUM AND
	0.564 INCHES MAXIMUM
DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER	3.371 INCHES MINIMUM AND
	3.421 INCHES MAXIMUM FIRST HOLE
SHANK UNTHREADED HOLE DIAMETER	0.106 INCHES MINIMUM AND
	0.116 INCHES MAXIMUM FIRST HOLE

Click here to Register for Free 30-day Trial