5305-00-206-3958, SCREW,EXTERNALLY RELIEVED BODY

National Stock Number:
5305-00-206-3958

Federal Supply Class:
5305

National Item Identification Number:
002063958

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:

A76823	0AHP5	CURTISS-WRIGHT CONTROLS, INC.
A76823	78047	CAPITOL ENGINE CO INC DBA SALMINI WORLDWIDE

Techincal Specification:

DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER	0.115 INCHES MINIMUM AND 0.135 INCHES MAXIMUM
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FOURTH DIAMETER	3.115 INCHES MINIMUM AND 3.135 INCHES MAXIMUM
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF SECOND DIAMETER	0.365 INCHES MINIMUM AND 0.385 INCHES MAXIMUM
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIFTH DIAMETER	5.146 INCHES MINIMUM AND 5.166 INCHES MAXIMUM
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF THIRD DIAMETER	2.365 INCHES MINIMUM AND 2.385 INCHES MAXIMUM
EXTERNALLY RELIEVED BODY DIAMETER QUANTITY	5
FASTENER LENGTH	6.271 INCHES MINIMUM AND 6.291 INCHES MAXIMUM
FIFTH DIAMETER FROM HEAD	0.390 INCHES MINIMUM AND 0.394 INCHES MAXIMUM
FIRST DIAMETER FROM HEAD	0.390 INCHES MINIMUM AND 0.394 INCHES MAXIMUM
FOURTH DIAMETER FROM HEAD	0.499 INCHES MINIMUM AND 0.500 INCHES MAXIMUM
HARDNESS RATING	28.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM OVERALL
HEAD DIAMETER	0.885 INCHES MAXIMUM
HEAD HEIGHT	0.416 INCHES MAXIMUM
HEAD STYLE	FLAT CHAMFER
INTERNAL DRIVE STYLE	CROSS RECESS TYPE 1
MATERIAL DOCUMENT AND CLASSIFICATION	SAE 8640 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
MATERIAL	STEEL OVERALL
NOMINAL THREAD DIAMETER	0.500 INCHES
SECOND DIAMETER FROM HEAD	0.488 INCHES MINIMUM AND 0.495 INCHES MAXIMUM
SPECIAL FEATURES	SIXTH DIA FROM HEAD 0.488 TO 0.495,SEVENTH DIA FROM HEAD 0.415 TO 0.425,5.458 TO 5.478 LG FROM BEARING SURFACE OF HEAD TO END OF SIXTH DIA,5.583 TO 5.603 LG FROM BEARING SURFACE OF HEAD TO END OF SEVENTH DIA
THREAD CLASS	3A
THREAD DIRECTION	RIGHT-HAND
THIRD DIAMETER FROM HEAD	0.390 INCHES MINIMUM AND 0.394 INCHES MAXIMUM
THREAD LENGTH	0.678 INCHES MINIMUM AND 0.698 INCHES MAXIMUM
THREAD QUANTITY PER INCH	20
THREAD SERIES DESIGNATOR	UNF

Click here to Register for Free 30-day Trial