5305-12-163-5052, SCREW,EXTERNALLY RELIEVED BODY

5305-12-163-5048 SCREW,EXTERNALLY RELIEVED BODY

National Stock Number:
5305-12-163-5052

Federal Supply Class:
5305

National Item Identification Number:
121635052

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:

4030320171	D8046	DAIMLER AG
51.90020-0127	D3273	MAN TRUCK & BUS AG

Techincal Specification:

DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER	10.0 MILLIMETERS NOMINAL
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF SECOND DIAMETER	14.0 MILLIMETERS NOMINAL
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF THIRD DIAMETER	56.0 MILLIMETERS NOMINAL
EXTENDED WASHER DIAMETER	26.8 MILLIMETERS NOMINAL
EXTENDED WASHER THICKNESS	3.5 MILLIMETERS NOMINAL
EXTERNAL THREAD TOLERANCE CLASS	6 KLEIN G
EXTERNALLY RELIEVED BODY DIAMETER QUANTITY	2
FASTENER LENGTH	74.0 MILLIMETERS NOMINAL
FIRST DIAMETER FROM HEAD	13.5 MILLIMETERS NOMINAL
HARDNESS RATING	330.0 VICKERS OR FIRTH DIAMOND PYRAMID MINIMUM OVERALL AND 440.0 VICKERS OR FIRTH DIAMOND PYRAMID MAXIMUM OVERALL
HEAD HEIGHT	13.0 MILLIMETERS NOMINAL
HEAD STYLE	HEXAGON EXTENDED WASHER
INTERNAL DRIVE STYLE	W/O INTERNAL DRIVE
MATERIAL DOCUMENT AND CLASSIFICATION	DIN ISO898TEIL1 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
MATERIAL	STEEL OVERALL
NOMINAL THREAD DIAMETER	16.0 MILLIMETERS
SECOND DIAMETER FROM HEAD	16.0 MILLIMETERS NOMINAL
WIDTH BETWEEN FLATS	19.0 MILLIMETERS NOMINAL
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	DBL9400.20 MFR REF SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENT	PHOSPHATE ZINC OVERALL
THIRD DIAMETER FROM HEAD	13.5 MILLIMETERS NOMINAL
THREAD DIRECTION	RIGHT-HAND
THREAD LENGTH	18.0 MILLIMETERS NOMINAL
THREAD SERIES DESIGNATOR	ISO M
THREAD PITCH IN MILLIMETERS	1.5

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