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National Stock Number:
5305-01-072-9488
Federal Supply Class:
5305
National Item Identification Number:
010729488
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:
| 11508421 | 18876 | U S ARMY AVIATION AND MISSILE COMMAND |
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Techincal Specification:
| DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER | 0.075 INCHES MINIMUM AND 0.085 INCHES MAXIMUM | | EXTERNALLY RELIEVED BODY DIAMETER QUANTITY | 1 | | FASTENER LENGTH | 0.535 INCHES MINIMUM AND 0.540 INCHES MAXIMUM | | FIRST DIAMETER FROM HEAD | 0.135 INCHES MINIMUM AND 0.145 INCHES MAXIMUM | | HEAD DIAMETER | 0.440 INCHES NOMINAL | | HEAD HEIGHT | 0.190 INCHES MINIMUM AND 0.198 INCHES MAXIMUM | | HEAD STYLE | FLAT CHAMFER | | INTERNAL DRIVE STYLE | SLOT | | MATERIAL DOCUMENT AND CLASSIFICATION | AMS 5738,303SE,COND B ASSN STD SINGLE MATERIAL RESPONSE OVERALL | | MATERIAL | STEEL OVERALL | | NOMINAL THREAD DIAMETER | 0.190 INCHES | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-C-14538 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL | | SURFACE TREATMENT | CHROMIUM OVERALL | | THREAD CLASS | 2A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.200 INCHES NOMINAL | | THREAD QUANTITY PER INCH | 32 | | THREAD SERIES DESIGNATOR | UNF |
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