5305-01-571-1231, SCREW,EXTERNALLY RELIEVED BODY

National Stock Number:
5305-01-571-1231

Federal Supply Class:
5305

National Item Identification Number:
015711231

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:

A3252066

80063

US ARMY COMMUNICATIONS & ELECTRONICS MATERIEL READINESS COMMAND LOGISTICS ENGINEERING DIR

Techincal Specification:

DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER	0.245 INCHES NOMINAL
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF SECOND DIAMETER	0.330 INCHES NOMINAL
EXTENDED WASHER THICKNESS	0.020 INCHES NOMINAL
EXTENDED WASHER DIAMETER	0.188 INCHES NOMINAL
EXTERNALLY RELIEVED BODY DIAMETER QUANTITY	2
FASTENER LENGTH	0.330 INCHES NOMINAL
FIRST DIAMETER FROM HEAD	0.090 INCHES NOMINAL
HEAD HEIGHT	0.155 INCHES NOMINAL
HEAD STYLE	HEXAGON EXTENDED WASHER
INTERNAL DRIVE STYLE	W/O INTERNAL DRIVE
MATERIAL DOCUMENT AND CLASSIFICATION	ASTM-A582 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
MATERIAL	STEEL CORROSION RESISTING OVERALL
PART NAME ASSIGNED BY CONTROLLING AGENCY	SCREW
PROPRIETARY CHARACTERISTICS	PACS
NOMINAL THREAD DIAMETER	0.086 INCHES
SECOND DIAMETER FROM HEAD	0.085 INCHES NOMINAL
SPECIAL FEATURES	THREADED HEAD EXTENDS 0.125 INCHES PAST HEX HEAD WASHER WITH 0.086-56 UNC THREAD SERIES; PART TO BE FREE OF BURS AND SHARP EDGES
SPECIFICATION/STANDARD DATA	80063-MIL-STD-454, REQ 9 GOVERNMENT SPECIFICATION
WIDTH BETWEEN FLATS	0.086 INCHES NOMINAL
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	MIL-F-14072 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENT	PASSIVATE OVERALL
THREAD LENGTH	0.085 INCHES NOMINAL
THREAD CLASS	2A
THREAD DIRECTION	RIGHT-HAND
THREAD QUANTITY PER INCH	56
THREAD SERIES DESIGNATOR	UNC

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