5305-00-619-4860, SCREW,EXTERNALLY RELIEVED BODY

National Stock Number:
5305-00-619-4860

Federal Supply Class:
5305

National Item Identification Number:
006194860

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:

59714DB	31007	NAVISTAR INTL CORP
59714DB	92679	NAVISTAR INTL CORP MELROSE PARK ENGINE PLANT LOCATION /MELROSE PARK/

Techincal Specification:

DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER	0.094 INCHES NOMINAL
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FOURTH DIAMETER	0.422 INCHES NOMINAL
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF SECOND DIAMETER	0.245 INCHES MINIMUM AND 0.252 INCHES MAXIMUM
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF THIRD DIAMETER	0.391 INCHES NOMINAL
EXTERNALLY RELIEVED BODY DIAMETER QUANTITY	4
FASTENER LENGTH	0.433 INCHES MINIMUM AND 0.439 INCHES MAXIMUM
FIRST DIAMETER FROM HEAD	0.228 INCHES MINIMUM AND 0.233 INCHES MAXIMUM
FOURTH DIAMETER FROM HEAD	0.233 INCHES MINIMUM AND 0.234 INCHES MAXIMUM
HEAD DIAMETER	0.438 INCHES NOMINAL
HEAD HEIGHT	0.139 INCHES MINIMUM AND 0.146 INCHES MAXIMUM
HEAD STYLE	FLAT CHAMFER
INTERNAL DRIVE STYLE	CROSS RECESS TYPE 1
MATERIAL	STEEL OVERALL
NOMINAL THREAD DIAMETER	0.312 INCHES
SECOND DIAMETER FROM HEAD	0.312 INCHES NOMINAL
THIRD DIAMETER FROM HEAD	0.223 INCHES MINIMUM AND 0.227 INCHES MAXIMUM
THREAD LENGTH	0.151 INCHES MINIMUM AND 0.158 INCHES MAXIMUM
THREAD CLASS	2A
THREAD DIRECTION	RIGHT-HAND
THREAD QUANTITY PER INCH	24
THREAD SERIES DESIGNATOR	UNF

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