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National Stock Number:
5305-01-253-1819
Federal Supply Class:
5305
National Item Identification Number:
012531819
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:
| 401-SS-0 | 55566 | MATTHEW WARREN, INC |
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Techincal Specification:
| EXTERNALLY RELIEVED BODY DIAMETER QUANTITY | 2 | | FASTENER LENGTH | 1.173 INCHES MINIMUM AND 1.203 INCHES MAXIMUM | | HEAD DIAMETER | 0.312 INCHES MINIMUM AND 0.327 INCHES MAXIMUM | | HEAD HEIGHT | 0.302 INCHES MINIMUM AND 0.322 INCHES MAXIMUM | | HEAD STYLE | KNURLED NO. 4 | | INTERNAL DRIVE STYLE | SLOT | | MATERIAL DOCUMENT AND CLASSIFICATION | ASTM-A-581,A-582 /NO MAGNETIC/ ASSN STD SINGLE MATERIAL RESPONSE OVERALL | | MATERIAL | STEEL OVERALL | | POINT LENGTH | 0.079 INCHES MINIMUM AND 0.109 INCHES MAXIMUM | | POINT STYLE | CONE | | POINT CHAMFER ANGLE | 85.0 DEGREES MINIMUM AND 95.0 DEGREES MAXIMUM | | POINT DIAMETER | 0.085 INCHES MINIMUM AND 0.095 INCHES MAXIMUM | | PROPRIETARY CHARACTERISTICS | NPAC | | NOMINAL THREAD DIAMETER | 0.138 INCHES | | THREAD LENGTH | 0.204 INCHES MINIMUM AND 0.219 INCHES MAXIMUM | | THREAD CLASS | 2A | | THREAD DIRECTION | RIGHT-HAND | | THREAD QUANTITY PER INCH | 32 | | THREAD SERIES DESIGNATOR | UNC |
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