5306-01-319-9436, BOLT,INTERNALLY RELIEVED BODY

National Stock Number:
5306-01-319-9436

Federal Supply Class:
5306

National Item Identification Number:
013199436

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:

203-4678510 ITEM 20	80064	NAVAL SHIP SYSTEMS COMMAND
30-11-7840	96169	ELECTRIC BOAT CORPORATION

Techincal Specification:

DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER	8.750 INCHES NOMINAL FIRST HOLE
FASTENER LENGTH	15.000 INCHES NOMINAL
HEAD HEIGHT	1.000 INCHES NOMINAL
HEAD STYLE	HEXAGON
INTERNAL THREAD CLASS	2B COUNTERBORE
INTERNAL THREAD DIRECTION	RIGHT-HAND COUNTERBORE
INTERNAL THREAD LENGTH	6.000 INCHES MINIMUM COUNTERBORE
NOMINAL THREAD DIAMETER	2.500 INCHES
NOMINAL THREAD SIZE	1.500 INCHES COUNTERBORE
SHANK UNTHREADED HOLE DIAMETER	0.060 INCHES NOMINAL FIRST HOLE
STYLE DESIGNATOR	CONCENTRIC HOLE THREADED
SPECIAL FEATURES	SLOTTED ON LOWER THREADED 1.880 IN. FRO POINT 0.380 IN. DIA
THREAD CLASS	2A
THREAD DIRECTION	RIGHT-HAND
THREAD SERIES DESIGNATOR	UNIFIED NATIONAL COARSE (UNC)
THREAD SERIES	UNIFIED NATIONAL COARSE (UNC) COUNTERBORE
THREAD QUANTITY PER INCH	4
THREADS PER INCH	6 COUNTERBORE
WIDTH BETWEEN FLATS	0.174 INCHES MINIMUM AND 0.175 INCHES MAXIMUM

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