5305-01-071-4583, SCREW,EXTERNALLY RELIEVED BODY

5305-01-071-4581 SCREW,EXTERNALLY RELIEVED BODY

National Stock Number:
5305-01-071-4583

Federal Supply Class:
5305

National Item Identification Number:
010714583

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:

A320A185-101

88818

KEARFOTT CORPORATION

Techincal Specification:

DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER	0.415 INCHES MINIMUM AND 0.425 INCHES MAXIMUM
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF SECOND DIAMETER	0.825 INCHES NOMINAL
EXTERNALLY RELIEVED BODY DIAMETER QUANTITY	2
FASTENER LENGTH	1.075 INCHES NOMINAL
FIRST DIAMETER FROM HEAD	0.098 INCHES MINIMUM AND 0.099 INCHES MAXIMUM
HEAD DIAMETER	0.155 INCHES MINIMUM AND 0.167 INCHES MAXIMUM
HEAD HEIGHT	0.044 INCHES MINIMUM AND 0.054 INCHES MAXIMUM
HEAD STYLE	FLAT CHAMFER
INTERNAL DRIVE STYLE	SLOT
MATERIAL DOCUMENT AND CLASSIFICATION	ASTM A582 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
MATERIAL	STEEL COMP 303 OVERALL
NOMINAL THREAD DIAMETER	0.086 INCHES
SECOND DIAMETER FROM HEAD	0.061 INCHES MINIMUM AND 0.063 INCHES MAXIMUM
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	C190000120 FSCM 88818 MFR REF SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENT	PASSIVATE OVERALL
THREAD CLASS	2A
THREAD DIRECTION	RIGHT-HAND
THREAD LENGTH	0.250 INCHES NOMINAL
THREAD QUANTITY PER INCH	56
THREAD SERIES DESIGNATOR	UNIFIED NATIONAL COARSE (UNC)

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