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National Stock Number:
5305-01-485-3998
Federal Supply Class:
5305
National Item Identification Number:
014853998
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:
| 710-.75-SS-12 | 51506 | ACCURATE SCREW MACHINE CORP |
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Techincal Specification:
| EXTERNALLY RELIEVED BODY DIAMETER QUANTITY | 1 | | FASTENER LENGTH | 0.750 INCHES NOMINAL | | FIRST DIAMETER FROM HEAD | 0.159 INCHES MINIMUM AND 0.175 INCHES MAXIMUM | | HEAD DIAMETER | 0.495 INCHES MINIMUM AND 0.515 INCHES MAXIMUM | | HEAD HEIGHT | 0.546 INCHES MINIMUM AND 0.578 INCHES MAXIMUM | | HEAD STYLE | KNURLED NO. 4 | | INTERNAL DRIVE STYLE | SLOT | | MATERIAL | STEEL CORROSION RESISTING OVERALL | | NOMINAL THREAD DIAMETER | 0.250 INCHES | | SURFACE TREATMENT | PASSIVATE OVERALL | | THREAD DIRECTION | RIGHT-HAND | | THREAD CLASS | 2A | | THREAD LENGTH | 0.298 INCHES MINIMUM AND 0.313 INCHES MAXIMUM | | THREAD SERIES DESIGNATOR | UNC | | THREAD QUANTITY PER INCH | 20 |
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