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National Stock Number:
5305-00-522-2437
Federal Supply Class:
5305
National Item Identification Number:
005222437
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:
| 342662 | 10001 | NAVAIR AND NAVSEA MANAGED ORIGINAL DESIGN ACTIVITY DWG NOT MATERIAL/PARTS SUPPLIER | | 5222437 | 19206 | ARMY, UNITED STATES DEPARTMENT OF THE BUSINESS DEVELOPMENT DBA WATERVLIET ARSENAL |
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Techincal Specification:
| DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER | 0.594 INCHES NOMINAL FIRST HOLE | | DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF SECOND DIAMETER | 0.359 INCHES NOMINAL | | DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER | 0.063 INCHES NOMINAL | | DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF THIRD DIAMETER | 0.750 INCHES NOMINAL | | EXTERNALLY RELIEVED BODY DIAMETER QUANTITY | 3 | | FASTENER LENGTH | 0.750 INCHES NOMINAL | | FIRST DIAMETER FROM HEAD | 0.313 INCHES NOMINAL | | HARDNESS RATING | 152.0 BRINELL STANDARD MINIMUM AND 219.0 BRINELL STANDARD MAXIMUM OVERALL | | HEAD DIAMETER | 0.563 INCHES NOMINAL | | HEAD HEIGHT | 0.125 INCHES NOMINAL | | HEAD STYLE | PAN NO. 2 | | INTERNAL DRIVE STYLE | SLOT | | MATERIAL | STEEL OVERALL | | NOMINAL THREAD DIAMETER | 0.375 INCHES | | SECOND DIAMETER FROM HEAD | 0.375 INCHES NOMINAL | | SHANK UNTHREADED HOLE DIAMETER | 0.078 INCHES NOMINAL FIRST HOLE | | SURFACE TREATMENT | PHOSPHATE OVERALL | | THREAD CLASS | 2A | | THREAD DIRECTION | RIGHT-HAND | | THIRD DIAMETER FROM HEAD | 0.281 INCHES NOMINAL | | THREAD LENGTH | 0.328 INCHES MINIMUM | | THREAD QUANTITY PER INCH | 24 | | THREAD SERIES DESIGNATOR | UNF |
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