5306-01-420-4318, BOLT,MACHINE

National Stock Number:
5306-01-420-4318

Federal Supply Class:
5306

National Item Identification Number:
014204318

Description:
BOLT,MACHINE

Detail:
An externally threaded fastener designed for insertion through holes in assembled parts and normally intended to be tightened or released by torquing a nut. The threaded and unthreaded portions are both of one nominal diameter of 0.190 inch (5 mm) or larger. The head is not designed to be held or driven with an inserted driver or by the thumb and fingers. A locking feature may be incorporated in the design of the head or threads. Head dimensions and sizes of threaded and unthreaded portions shall conform to internationally recognized fastener standards. For items having a grip length portion machined to a tolerance of 0.0015 inch (0.038 mm) or less, BOLT, SHEAR. See also SCREW, CAP, HEXAGON HEAD and SCREW, MACHINE.

Manufacturer Information:

624254-1452DN3	80020	NAVAL AIR WARFARE CENTER AIRCRAFT DIVISION CODE 4.8.8.0.0.B BLDG 148-2
REI-02-12007	80020	NAVAL AIR WARFARE CENTER AIRCRAFT DIVISION CODE 4.8.8.0.0.B BLDG 148-2
REI-02-12265	80020	NAVAL AIR WARFARE CENTER AIRCRAFT DIVISION CODE 4.8.8.0.0.B BLDG 148-2

Techincal Specification:

EXTENDED WASHER DIAMETER	1.293 INCHES MINIMUM AND 1.312 INCHES MAXIMUM
EXTENDED WASHER THICKNESS	0.333 INCHES MINIMUM AND 0.353 INCHES MAXIMUM
FASTENER LENGTH	6.500 INCHES NOMINAL
HARDNESS RATING	32.0 ROCKWELL C MINIMUM AND 37.0 ROCKWELL C MAXIMUM OVERALL
HEAD HEIGHT	0.875 INCHES MINIMUM AND 0.884 INCHES MAXIMUM
HEAD STYLE	DOUBLE HEXAGON EXTENDED WASHER
MATERIAL DOCUMENT AND CLASSIFICATION	MIL-S-5626 MIL SPEC 1ST MATERIAL RESPONSE OR MIL-S-5000 MIL SPEC 2ND MATERIAL RESPONSE OR ASTM A29, GRADE 8640 ASSN STD 3RD MATERIAL RESPONSE OVERALL
MATERIAL	STEEL COMP 4140 OR STEEL COMP E4340 OR STEEL COMP 8640 OVERALL
NOMINAL THREAD DIAMETER	0.875 INCHES
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	QQ-P-416, TYPE 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENT	CADMIUM AND CHROMATE OVERALL
THREAD CLASS	3A
THREAD DIRECTION	RIGHT-HAND
THREAD LENGTH	2.766 INCHES NOMINAL
THREAD SERIES DESIGNATOR	UNIFIED NATIONAL COARSE (UNC)
THREAD QUANTITY PER INCH	9
WIDTH BETWEEN FLATS	0.868 INCHES MINIMUM AND 0.879 INCHES MAXIMUM

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