5305-00-166-2110, SCREW,EXTERNALLY RELIEVED BODY

5305-00-166-2112 SCREW,EXTERNALLY RELIEVED BODY

National Stock Number:
5305-00-166-2110

Federal Supply Class:
5305

National Item Identification Number:
001662110

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:

121573

00198

PRATT & WHITNEY CANADA CORP

Techincal Specification:

THREAD SERIES DESIGNATOR	UNF
NOMINAL THREAD DIAMETER	0.625 INCHES
THREAD QUANTITY PER INCH	18
THREAD CLASS	3A
THREAD DIRECTION	RIGHT-HAND
THREAD LENGTH	0.488 INCHES MINIMUM
FASTENER LENGTH	2.188 INCHES NOMINAL
MATERIAL	STEEL COMP 8740 OVERALL
MATERIAL DOCUMENT AND CLASSIFICATION	AMS 6322 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
SURFACE TREATMENT	TIN OVERALL
HEAD STYLE	PAN NO. 2
HEAD DIAMETER	1.182 INCHES MINIMUM AND
	1.192 INCHES MAXIMUM
HEAD HEIGHT	0.302 INCHES MINIMUM AND
	0.322 INCHES MAXIMUM
INTERNAL DRIVE STYLE	CROSS RECESS TYPE 1
DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER	0.128 INCHES NOMINAL ALL HOLES
SHANK UNTHREADED HOLE DIAMETER	2.047 INCHES NOMINAL FIRST HOLE
EXTERNALLY RELIEVED BODY DIAMETER QUANTITY	3
FIRST DIAMETER FROM HEAD	0.535 INCHES MINIMUM AND
	0.545 INCHES MAXIMUM
SECOND DIAMETER FROM HEAD	0.686 INCHES MINIMUM AND
	0.687 INCHES MAXIMUM
THIRD DIAMETER FROM HEAD	0.535 INCHES MINIMUM AND
	0.545 INCHES MAXIMUM
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER	0.800 INCHES MINIMUM AND
	0.830 INCHES MAXIMUM
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF SECOND DIAMETER	1.300 INCHES MINIMUM AND
	1.330 INCHES MAXIMUM
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF THIRD DIAMETER	1.670 INCHES MINIMUM AND
	1.700 INCHES MAXIMUM

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