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National Stock Number:
5305-99-397-4523
Federal Supply Class:
5305
National Item Identification Number:
993974523
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:
| 3030W148 | U1605 | HONEYWELL AEROSPACE YEOVIL |
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Techincal Specification:
| DATE OF PRECEDING RECORD | 05228 | | EXTERNALLY RELIEVED BODY DIAMETER QUANTITY | 1 | | FASTENER LENGTH | 0.848 INCHES MINIMUM AND 0.878 INCHES MAXIMUM | | FIRST DIAMETER FROM HEAD | 0.200 INCHES MINIMUM AND 0.205 INCHES MAXIMUM | | HEAD STYLE | DISHED HEXAGON | | MATERIAL DOCUMENT AND CLASSIFICATION | AMS 5731 ASSN STD 1ST MATERIAL RESPONSE AND AMS 5737 ASSN STD 2ND MATERIAL RESPONSE | | MATERIAL | STEEL CORROSION RESISTING | | NOMINAL THREAD DIAMETER | 0.250 INCHES | | SPECIAL FEATURES | OXYGEN COMPONENT-MUST BE CLEAN AND FREE FROM OIL OR GREASE | | THREAD CLASS | 3A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.340 INCHES MINIMUM AND 0.360 INCHES MAXIMUM | | THREAD QUANTITY PER INCH | 28 | | THREAD SERIES DESIGNATOR | UNJF |
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