5305-01-478-3400, SCREW,EXTERNALLY RELIEVED BODY

National Stock Number:
5305-01-478-3400

Federal Supply Class:
5305

National Item Identification Number:
014783400

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:

114112.313 SS 12

51506

ACCURATE SCREW MACHINE CORP

Techincal Specification:

DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER	0.188 INCHES NOMINAL
EXTERNALLY RELIEVED BODY DIAMETER QUANTITY	1
FASTENER LENGTH	0.313 INCHES NOMINAL
FIRST DIAMETER FROM HEAD	0.056 INCHES MINIMUM AND 0.066 INCHES MAXIMUM
HEAD DIAMETER	0.134 INCHES MINIMUM AND 0.140 INCHES MAXIMUM
HEAD HEIGHT	0.083 INCHES MINIMUM AND 0.086 INCHES MAXIMUM
HEAD STYLE	PAN NO. 2
INTERNAL DRIVE STYLE	HEXAGON
MATERIAL DOCUMENT AND CLASSIFICATION	MIL-F-14072-C,TYPE I MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
MATERIAL	STEEL COMP 302 OR STEEL COMP 303 OR STEEL COMP 304 OVERALL
NOMINAL THREAD DIAMETER	0.086 INCHES
SURFACE TREATMENT	PASSIVATE OVERALL
THREAD CLASS	3A
THREAD DIRECTION	RIGHT-HAND
THREAD LENGTH	0.115 INCHES MINIMUM AND 0.135 INCHES MAXIMUM
THREAD QUANTITY PER INCH	56
THREAD SERIES DESIGNATOR	UNIFIED NATIONAL COARSE (UNC)

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