5305-01-353-6874, SCREW,EXTERNALLY RELIEVED BODY

5305-01-353-6873 SCREW,EXTERNALLY RELIEVED BODY

National Stock Number:
5305-01-353-6874

Federal Supply Class:
5305

National Item Identification Number:
013536874

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:

534470-4	26304	TORKON FASTENER CORP
534470-4	62384	LFC INDUSTRIES INC.
534470-4	63020	CRESCENT MANUFACTURING OPERATING COMPANY
534470-4	96214	RAYTHEON COMPANY

Techincal Specification:

DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER	0.187 INCHES NOMINAL
EXTERNALLY RELIEVED BODY DIAMETER QUANTITY	1
FASTENER LENGTH	0.281 INCHES MINIMUM AND 0.312 INCHES MAXIMUM
FIRST DIAMETER FROM HEAD	0.053 INCHES MINIMUM AND 0.063 INCHES MAXIMUM
HEAD DIAMETER	0.155 INCHES MINIMUM AND 0.167 INCHES MAXIMUM
HEAD HEIGHT	0.053 INCHES MINIMUM AND 0.062 INCHES MAXIMUM
HEAD STYLE	PAN
INTERNAL DRIVE STYLE	CROSS RECESS TYPE 1
MATERIAL	STEEL CORROSION RESISTING OVERALL
NOMINAL THREAD DIAMETER	0.086 INCHES
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENT	PASSIVATE OVERALL
THREAD CLASS	2A
THREAD DIRECTION	RIGHT-HAND
THREAD LENGTH	0.090 INCHES MINIMUM AND 0.125 INCHES MAXIMUM
THREAD SERIES DESIGNATOR	UNC
THREAD QUANTITY PER INCH	56

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