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National Stock Number:
5305-01-027-8941
Federal Supply Class:
5305
National Item Identification Number:
010278941
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:
| 2145112-2 | 19315 | HONEYWELL INTL INC DEFENSE AVIONICS SYSTEMS FORMER BENDIX NAVIGATION AND CONTROL SYSTEMS | | 2145112-2 | 55974 | HONEYWELL INTL INC DEFENSE AVIONICS SYSTEMS FORMER TEST SYSTEMS DIV | | 8-9478-225 | 97592 | PNEUMAFIL CORPORATION | | F19488B | 97592 | PNEUMAFIL CORPORATION |
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Techincal Specification:
| DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER | 0.450 INCHES NOMINAL | | EXTERNALLY RELIEVED BODY DIAMETER QUANTITY | 1 | | FASTENER LENGTH | 0.670 INCHES NOMINAL | | FIRST DIAMETER FROM HEAD | 0.180 INCHES NOMINAL | | HEAD DIAMETER | 0.430 INCHES MINIMUM AND 0.450 INCHES MAXIMUM | | HEAD HEIGHT | 0.080 INCHES NOMINAL | | HEAD STYLE | FLAT CHAMFER | | INTERNAL DRIVE STYLE | SLOT | | MATERIAL DOCUMENT AND CLASSIFICATION | ASTM A582 ASSN STD SINGLE MATERIAL RESPONSE OVERALL | | MATERIAL | STEEL COMP 303 OVERALL | | NOMINAL THREAD DIAMETER | 0.250 INCHES | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-F-14072,FINISH E300 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL | | SURFACE TREATMENT | PASSIVATE OVERALL | | THREAD CLASS | 2A | | THREAD LENGTH | 0.220 INCHES NOMINAL | | THREAD DIRECTION | RIGHT-HAND | | THREAD SERIES DESIGNATOR | UNC | | THREAD QUANTITY PER INCH | 20 |
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