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National Stock Number:
5305-99-808-1763
Federal Supply Class:
5305
National Item Identification Number:
998081763
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.
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Manufacturer Information:
| 0D13993 | K2709 | PERKINS ENGINES COMPANY LTD | | 37H3582 | U5612 | LEYLAND TRUCKS LTD FOR SPARE PARTS S E U6425 | | 5335-807 | U0041 | PRESTOLITE ELECTRIC LIMITED TEMS |
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Techincal Specification:
| DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER | 1.656 INCHES MINIMUM AND 1.937 INCHES MAXIMUM | | FASTENER LENGTH | 2.593 INCHES MINIMUM AND 2.687 INCHES MAXIMUM | | FIRST DIAMETER FROM HEAD | 0.188 INCHES NOMINAL | | HEAD DIAMETER | 0.389 INCHES MINIMUM AND 0.414 INCHES MAXIMUM | | HEAD HEIGHT | 0.190 INCHES MINIMUM AND 0.200 INCHES MAXIMUM | | HEAD STYLE | FLAT CHAMFER | | INTERNAL DRIVE STYLE | SLOT | | MATERIAL DOCUMENT AND CLASSIFICATION | BS 970 EN8 NATIONAL STD SINGLE MATERIAL RESPONSE OVERALL | | MATERIAL | STEEL OVERALL | | NOMINAL THREAD DIAMETER | 0.250 INCHES | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | Z1 MFR REF SINGLE TREATMENT RESPONSE OVERALL | | SURFACE TREATMENT | ZINC OVERALL | | THREAD CLASS | 2A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.750 INCHES MINIMUM AND 0.937 INCHES MAXIMUM | | THREAD QUANTITY PER INCH | 20 | | THREAD SERIES DESIGNATOR | UNC |
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