5305-01-166-3342, SCREW,EXTERNALLY RELIEVED BODY

2520-01-166-3343 BOOT,POWER TRANSMISSION COMPONEN

National Stock Number:
5305-01-166-3342

Federal Supply Class:
5305

National Item Identification Number:
011663342

Description:
SCREW,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 undercut for thread relief). It is No. 0 (0.060 IN.) (1.5 mm) or larger, and is designed to be held or driven with either a wrench or inserted driver (excluding internal socket and multiple spline types) or both in sizes below No. 10 (0.190 IN.) (5 mm) and larger sizes must have a head designed for any type inserted driver (excluding internal socket and multiple spline types) but may also be designed for external wrenching. A locking feature may be incorporated in the design of the head or threads. See also BOLT, EXTERNALLY RELIEVED BODY and BOLT, INTERNAL WRENCHING.

Manufacturer Information:

71330613-001

04939

LOCKHEED MARTIN CORPORATION

Techincal Specification:

DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER	0.625 INCHES NOMINAL
EXTERNALLY RELIEVED BODY DIAMETER QUANTITY	2
FASTENER LENGTH	1.000 INCHES NOMINAL
FIRST DIAMETER FROM HEAD	0.131 INCHES MINIMUM AND 0.141 INCHES MAXIMUM
HEAD DIAMETER	0.303 INCHES MINIMUM AND 0.312 INCHES MAXIMUM
HEAD HEIGHT	0.185 INCHES MINIMUM AND 0.190 INCHES MAXIMUM
HEAD STYLE	PAN NO. 2
INTERNAL DRIVE STYLE	W/O INTERNAL DRIVE
MATERIAL DOCUMENT AND CLASSIFICATION	FF-S-86 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
MATERIAL	STEEL OVERALL
NOMINAL THREAD DIAMETER	0.190 INCHES
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENT	CADMIUM OVERALL
THREAD DIRECTION	RIGHT-HAND
THREAD CLASS	3A
THREAD LENGTH	0.375 INCHES NOMINAL
THREAD SERIES DESIGNATOR	UNRF
THREAD QUANTITY PER INCH	32

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