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National Stock Number:
5305-01-595-6239
Federal Supply Class:
5305
National Item Identification Number:
015956239
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:
| 255-7015272PNF526 | 53711 | NAVAL SEA SYSTEMS COMMAND | | FFS92,0.12540UNC2A0.375TY3ST9C | 81349 | MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M |
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Techincal Specification:
| THREAD SERIES DESIGNATOR | UNC | | NOMINAL THREAD DIAMETER | 0.125 INCHES | | THREAD QUANTITY PER INCH | 40 | | THREAD CLASS | 2A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.295 INCHES NOMINAL | | FASTENER LENGTH | 0.375 INCHES NOMINAL | | MATERIAL | STEEL OVERALL | | HEAD STYLE | PAN | | HEAD DIAMETER | 0.205 INCHES MINIMUM AND | | 0.219 INCHES MAXIMUM | | HEAD HEIGHT | 0.070 INCHES MINIMUM AND | | 0.080 INCHES MAXIMUM | | INTERNAL DRIVE STYLE | CROSS RECESS TYPE II | | SPEC/STD CONTROLLING DATA | | | MANUFACTURERS CODE | 81349 | | NON-DEFINITIVE GOVERNMENT SPEC/STD REFERENCE | FFS92,0.12540UNC2A0.375TY3ST9C |
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