5306-00-274-2143, BOLT,MACHINE

National Stock Number:
5306-00-274-2143

Federal Supply Class:
5306

National Item Identification Number:
002742143

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:

TP16361

10001

NAVAIR AND NAVSEA MANAGED ORIGINAL DESIGN ACTIVITY DWG NOT MATERIAL/PARTS SUPPLIER

Techincal Specification:

EXTENDED WASHER DIAMETER	0.308 INCHES MINIMUM AND 0.313 INCHES MAXIMUM
EXTENDED WASHER THICKNESS	0.058 INCHES MINIMUM AND 0.068 INCHES MAXIMUM
FASTENER LENGTH	0.495 INCHES MINIMUM AND 0.505 INCHES MAXIMUM
FEATURES PROVIDED	UNFINISHED HEAD
HEAD HEIGHT	0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM
HEAD STYLE	SQUARE EXTENDED WASHER
MATERIAL DOCUMENT AND CLASSIFICATION	MIL-S-16124 CL 2 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
MATERIAL	STEEL COMP 1137 OVERALL
NOMINAL THREAD DIAMETER	0.250 INCHES
SPECIAL FEATURES	UNTHREADED PORTION OF SHANK 0.243 TO 0.250 IN. DIA
WIDTH BETWEEN FLATS	0.214 INCHES MINIMUM AND 0.219 INCHES MAXIMUM
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	QQ-Z-325 TY 1 CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENT	ZINC OVERALL
THREAD CLASS	2A
THREAD DIRECTION	RIGHT-HAND
THREAD LENGTH	0.375 INCHES MINIMUM
THREAD QUANTITY PER INCH	20
THREAD SERIES DESIGNATOR	UNIFIED NATIONAL COARSE (UNC)

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