5305-99-534-5613, SCREW,EXTERNALLY RELIEVED BODY

National Stock Number:
5305-99-534-5613

Federal Supply Class:
5305

National Item Identification Number:
995345613

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:

Y3J17144	D9182	ZF INDUSTRIEANTRIEBE WITTEN GMBH
Y3J17144	K8098	MAN DIESEL & TURBO LTD

Techincal Specification:

DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER	0.110 INCHES MINIMUM AND 0.140 INCHES MAXIMUM
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF SECOND DIAMETER	3.500 INCHES NOMINAL
FASTENER LENGTH	4.391 INCHES MINIMUM AND 4.421 INCHES MAXIMUM
FIRST DIAMETER FROM HEAD	19.70 MILLIMETERS MINIMUM AND 20.30 MILLIMETERS MAXIMUM
HEAD DIAMETER	29.48 MILLIMETERS MINIMUM AND 30.00 MILLIMETERS MAXIMUM
HEAD HEIGHT	19.67 MILLIMETERS MINIMUM AND 20.00 MILLIMETERS MAXIMUM
HEAD STYLE	KNURLED NO. 1
INTERNAL DRIVE STYLE	HEXAGON
MATERIAL DOCUMENT AND CLASSIFICATION	BS 970 EN25 CONDITION (WITHDRAWN) NATIONAL STD/SPEC SINGLE MATERIAL RESPONSE
MATERIAL	STEEL
NOMINAL THREAD DIAMETER	20.00 MILLIMETERS
SECOND DIAMETER FROM HEAD	0.625 INCHES MINIMUM AND 0.630 INCHES MAXIMUM
WIDTH BETWEEN FLATS	17.00 MILLIMETERS NOMINAL
SURFACE TREATMENT	PHOSPHATE
THREAD CLASS	6G
THREAD DIRECTION	RIGHT-HAND
THREAD LENGTH	0.891 INCHES MINIMUM AND 0.921 INCHES MAXIMUM
THREAD SERIES DESIGNATOR	ISO M
THREAD PITCH IN MILLIMETERS	2.50

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