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National Stock Number:
5305-01-148-6234
Federal Supply Class:
5305
National Item Identification Number:
011486234
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:
| 178C4115P1 | 89954 | BAE SYSTEMS CONTROLS INC. |
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Techincal Specification:
| DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER | 1.009 INCHES MINIMUM AND 1.036 INCHES MAXIMUM | | EXTERNALLY RELIEVED BODY DIAMETER QUANTITY | 1 | | FASTENER LENGTH | 1.359 INCHES MINIMUM AND 1.406 INCHES MAXIMUM | | FIRST DIAMETER FROM HEAD | 0.097 INCHES MINIMUM AND 0.102 INCHES MAXIMUM | | HEAD HEIGHT | 0.080 INCHES MINIMUM AND 0.095 INCHES MAXIMUM | | HEAD STYLE | HEXAGON | | INTERNAL DRIVE STYLE | CROSS RECESS TYPE 1 | | MINIMUM TENSILE STRENGTH | 125000 POUNDS PER SQUARE INCH | | NOMINAL THREAD DIAMETER | 0.138 INCHES | | THREAD CLASS | 2A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.350 INCHES MINIMUM AND 0.370 INCHES MAXIMUM | | THREAD QUANTITY PER INCH | 32 | | THREAD SERIES DESIGNATOR | UNIFIED NATIONAL COARSE (UNC) | | WIDTH BETWEEN FLATS | 0.241 INCHES MINIMUM AND 0.250 INCHES MAXIMUM |
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