5306-00-393-3634, BOLT,EXTERNALLY RELIEVED BODY

4920-00-393-3625 COVER,PROTECTIVE,TURBINE ROTOR

National Stock Number:
5306-00-393-3634

Federal Supply Class:
5306

National Item Identification Number:
003933634

Description:
BOLT,EXTERNALLY RELIEVED BODY

Detail:
An externally threaded fastener whose threaded portion is of one nominal diameter, and whose unthreaded portion has been machined or ground in one or more places or over its entire length to a maximum diameter less than the minimum pitch diameter of the thread (excludes undercuts for thread relief). It is No. 10 (0.190 IN.) (5 mm) or larger in size and has a head which is not designed to be held or driven with an inserted driver or designed for rotation by the thumb and fingers. A locking feature may be incorporated in the design of the head or threads. Excludes BOLT, INTERNAL WRENCHING and THUMBSCREW. See also SCREW, EXTERNALLY RELIEVED BODY.

Manufacturer Information:

031B	0AT62	SIEMENS ENERGY, INC.
031B	830Q4	CURTISS-WRIGHT ELECTRO-MECHANICAL CORPORATION
031B	8FGX3	CURTISS-WRIGHT ELECTRO-MECHANICAL CORP
156408PC40T042	93232	CURTISS-WRIGHT ELECTRO-MECHANICAL CORPORATION
157017PC40T042	93232	CURTISS-WRIGHT ELECTRO-MECHANICAL CORPORATION
157431PC40T042	93232	CURTISS-WRIGHT ELECTRO-MECHANICAL CORPORATION
157441PC40T042	93232	CURTISS-WRIGHT ELECTRO-MECHANICAL CORPORATION
3031B	93236	DRESSER-RAND CO WORTHINGTON COMPRESSOR OPN A JOINT VENTURE

Techincal Specification:

DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER	4.344 INCHES NOMINAL FIRST HOLE
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER	0.875 INCHES NOMINAL
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF SECOND DIAMETER	2.875 INCHES NOMINAL
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF THIRD DIAMETER	3.688 INCHES NOMINAL
EXTERNALLY RELIEVED BODY DIAMETER QUANTITY	2
FASTENER LENGTH	4.625 INCHES NOMINAL
FIRST DIAMETER FROM HEAD	0.490 INCHES NOMINAL
HEAD DIAMETER	0.875 INCHES NOMINAL
HEAD HEIGHT	0.438 INCHES NOMINAL
HEAD STYLE	FLAT CHAMFER
MATERIAL DOCUMENT AND CLASSIFICATION	MIL-S-890,ALLOY MO. 2 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
MATERIAL	STEEL OVERALL
MINIMUM YIELD STRENGTH	105000 POUNDS PER SQUARE INCH
NOMINAL THREAD DIAMETER	0.562 INCHES
SECOND DIAMETER FROM HEAD	0.560 INCHES NOMINAL
SHANK UNTHREADED HOLE DIAMETER	0.141 INCHES NOMINAL FIRST HOLE
SPECIAL FEATURES	WITH GROOVE IN SIDE OF HEAD 0.188 IN. W 0.094 IN. DEEP,FURNISHED WITH HEX NUT AND COTTER PIN
THREAD CLASS	3A
THREAD DIRECTION	RIGHT-HAND
THIRD DIAMETER FROM HEAD	0.490 INCHES NOMINAL
THREAD LENGTH	0.938 INCHES NOMINAL
THREAD SERIES DESIGNATOR	UNF
THREAD QUANTITY PER INCH	18

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