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National Stock Number:
5305-00-954-5303
Federal Supply Class:
5305
National Item Identification Number:
009545303
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:
| 10851-007 | 10138 | ASTRONAUTICS CORPORATION OF AMERICA | | 127621 | 73734 | FEDERAL SCREW PRODUCTS INC. | | 867088-0002 | 06481 | NORTHROP GRUMMAN SYSTEMS CORPORATION | | 431913 | 1PQF4 | CAE USA INC. | | 431913 | 36378 | RAYTHEON TECHNICAL SERVICES COMPANY | | 1291-266 | 72314 | BAE SYSTEMS INFORMATION AND ELECTRONIC SYSTEMS INTEGRATION INC. | | Y9-7 | 00141 | ROLLER BEARING CO OF AMERICA, INC | | 867088-0002 | 13973 | LITTON SYSTEMS INC. DIV NAVIGATION SYSTEMS DIVISION | | Z12-7-H | 29440 | W. M. BERG INC | | Z12-7H | 29440 | W. M. BERG INC | | CCSS-7 | 70318 | ALLMETAL SCREW PRODUCTS CORP |
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Techincal Specification:
| DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER | 0.468 INCHES NOMINAL | | EXTERNALLY RELIEVED BODY DIAMETER QUANTITY | 1 | | FASTENER LENGTH | 0.718 INCHES NOMINAL | | FIRST DIAMETER FROM HEAD | 0.114 INCHES NOMINAL | | HEAD DIAMETER | 0.156 INCHES NOMINAL | | HEAD HEIGHT | 0.312 INCHES NOMINAL | | HEAD STYLE | FLAT CHAMFER | | INTERNAL DRIVE STYLE | CROSS RECESS TYPE 1 | | MATERIAL | STEEL CORROSION RESISTING OVERALL | | NOMINAL THREAD DIAMETER | 0.164 INCHES | | SURFACE TREATMENT | PASSIVATE OVERALL | | THREAD CLASS | 2A | | THREAD LENGTH | 0.250 INCHES MINIMUM | | THREAD DIRECTION | RIGHT-HAND | | THREAD QUANTITY PER INCH | 32 | | THREAD SERIES DESIGNATOR | UNC |
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