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National Stock Number:
5305-01-336-7540
Federal Supply Class:
5305
National Item Identification Number:
013367540
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:
| 717751148-004 | 04939 | LOCKHEED MARTIN CORPORATION |
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Techincal Specification:
| THREAD SERIES DESIGNATOR | UNRC | | NOMINAL THREAD DIAMETER | 0.138 INCHES | | THREAD QUANTITY PER INCH | 32 | | THREAD CLASS | 2A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.325 INCHES NOMINAL | | FASTENER LENGTH | 0.625 INCHES NOMINAL | | MATERIAL | IRON ALLOY 660 OVERALL | | MATERIAL DOCUMENT AND CLASSIFICATION | AMS 5731 ASSN STD SINGLE MATERIAL RESPONSE OR | | AMS 5737 ASSN STD SINGLE MATERIAL RESPONSE OVERALL | | MINIMUM TENSILE STRENGTH | 160000 POUNDS PER SQUARE INCH | | HEAD STYLE | FLAT CHAMFER | | HEAD DIAMETER | 0.218 INCHES MINIMUM AND | | 0.226 INCHES MAXIMUM | | HEAD HEIGHT | 0.134 INCHES MINIMUM AND | | 0.138 INCHES MAXIMUM | | INTERNAL DRIVE STYLE | HEXAGON | | WIDTH ACROSS FLATS | 0.109 INCHES MINIMUM AND | | 0.111 INCHES MAXIMUM | | EXTERNALLY RELIEVED BODY DIAMETER QUANTITY | 1 | | FIRST DIAMETER FROM HEAD | 0.080 INCHES MINIMUM AND | | 0.090 INCHES MAXIMUM | | DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER | 0.290 INCHES MINIMUM AND | | 0.310 INCHES MAXIMUM |
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