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National Stock Number:
5305-00-991-0774
Federal Supply Class:
5305
National Item Identification Number:
009910774
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:
| 58-27-310-26 | 94222 | SOUTHCO INC | | 58-27-310-56 | 94222 | SOUTHCO INC | | 7208872-2 | 03538 | LOCKHEED MARTIN CORPORATION | | 7208872P002 | 03538 | LOCKHEED MARTIN CORPORATION |
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Techincal Specification:
| DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER | 0.625 INCHES MINIMUM | | EXTERNALLY RELIEVED BODY DIAMETER QUANTITY | 1 | | FASTENER LENGTH | 1.000 INCHES MINIMUM | | FIRST DIAMETER FROM HEAD | 0.136 INCHES MINIMUM | | HEAD DIAMETER | 0.438 INCHES MINIMUM | | HEAD HEIGHT | 0.250 INCHES MINIMUM | | HEAD STYLE | KNURLED NO. 4 | | INTERNAL DRIVE STYLE | CROSS RECESS TYPE 1 | | MATERIAL | COPPER ALLOY OVERALL | | NOMINAL THREAD DIAMETER | 0.164 INCHES | | SURFACE TREATMENT | CHROMIUM OVERALL | | THREAD CLASS | 2A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.375 INCHES MINIMUM | | THREAD QUANTITY PER INCH | 32 | | THREAD SERIES DESIGNATOR | UNC |
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