5306-01-371-2850, BOLT,MACHINE

National Stock Number:
5306-01-371-2850

Federal Supply Class:
5306

National Item Identification Number:
013712850

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:

BACB30LE5K18

81205

THE BOEING COMPANY

Techincal Specification:

EXTENDED WASHER DIAMETER	0.575 INCHES MINIMUM AND 0.585 INCHES MAXIMUM
EXTENDED WASHER THICKNESS	0.040 INCHES MINIMUM AND 0.060 INCHES MAXIMUM
FASTENER LENGTH	1.703 INCHES MINIMUM AND 1.733 INCHES MAXIMUM
GRIP LENGTH	1.115 INCHES MINIMUM AND 1.135 INCHES MAXIMUM
HEAD HEIGHT	0.309 INCHES MINIMUM AND 0.329 INCHES MAXIMUM
HEAD STYLE	DOUBLE HEXAGON EXTENDED WASHER
MATERIAL	IRON ALLOY 660 OVERALL
NOMINAL THREAD DIAMETER	0.3125 INCHES
WIDTH BETWEEN FLATS	0.418 INCHES MINIMUM AND 0.434 INCHES MAXIMUM
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	BMS 10-85,TY I MFR REF SINGLE TREATMENT RESPONSE THREADS
SURFACE TREATMENT	ALUMINUM THREADS
THREAD CLASS	3A
THREAD DIRECTION	RIGHT-HAND
THREAD LENGTH	0.593 INCHES NOMINAL
THREAD QUANTITY PER INCH	24
THREAD SERIES DESIGNATOR	UNIFIED NATIONAL JOINT FINE (UNJF)

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