5305-01-116-8939, SCREW,EXTERNALLY RELIEVED BODY

5905-01-116-8938 RESISTOR,VARIABLE,WIRE WOUND,NON

National Stock Number:
5305-01-116-8939

Federal Supply Class:
5305

National Item Identification Number:
011168939

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:

4160-M07-F09	04729	UNICORP.
6160-SS-2520	06540	NEW HAVEN MFG CORP AMATOM ELECTRONIC HARDWARE DIV
6160-SS-2520-7	06540	NEW HAVEN MFG CORP AMATOM ELECTRONIC HARDWARE DIV
6160-SS-2520-7	1YGB8	CAREY MANUFACTURING CO, INC
6160-SS-2520	1YGB8	CAREY MANUFACTURING CO, INC
GS553L4CC19C	26512	NORTHROP GRUMMAN SYSTEMS CORPORATION

Techincal Specification:

DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER	0.792 INCHES MINIMUM AND 0.832 INCHES MAXIMUM
EXTERNALLY RELIEVED BODY DIAMETER QUANTITY	1
FASTENER LENGTH	1.172 INCHES MINIMUM AND 1.202 INCHES MAXIMUM
FIRST DIAMETER FROM HEAD	0.170 INCHES MINIMUM AND 0.180 INCHES MAXIMUM
HEAD DIAMETER	0.745 INCHES MINIMUM AND 0.755 INCHES MAXIMUM
HEAD HEIGHT	0.235 INCHES MINIMUM AND 0.265 INCHES MAXIMUM
HEAD STYLE	KNURLED NO. 1
INTERNAL DRIVE STYLE	SLOT
MATERIAL DOCUMENT AND CLASSIFICATION	ASTMA555 ASSN STD SINGLE MATERIAL RESPONSE OR ASTMA581 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
MATERIAL	STEEL CORROSION RESISTING OVERALL
NOMINAL THREAD DIAMETER	0.250 INCHES
THREAD QUANTITY PER INCH	20
THREAD SERIES DESIGNATOR	UNIFIED NATIONAL COARSE (UNC)
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENT	PASSIVATE OVERALL
THREAD DIRECTION	RIGHT-HAND
THREAD CLASS	2A
THREAD LENGTH	0.359 INCHES MINIMUM AND 0.391 INCHES MAXIMUM

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