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National Stock Number:
5305-00-579-3062
Federal Supply Class:
5305
National Item Identification Number:
005793062
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:
| 401885 | 66503 | WOODWARD, INC. |
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Techincal Specification:
| DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER | 0.050 INCHES NOMINAL | | DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FOURTH DIAMETER | 0.380 INCHES NOMINAL | | DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF SECOND DIAMETER | 0.255 INCHES NOMINAL | | EXTERNALLY RELIEVED BODY DIAMETER QUANTITY | 4 | | FASTENER LENGTH | 0.750 INCHES NOMINAL | | FIRST DIAMETER FROM HEAD | 0.190 INCHES NOMINAL | | FOURTH DIAMETER FROM HEAD | 0.187 INCHES NOMINAL | | HEAD HEIGHT | 0.060 INCHES NOMINAL | | HEAD DIAMETER | 0.310 INCHES NOMINAL | | HEAD STYLE | FLAT CHAMFER | | INTERNAL DRIVE STYLE | SLOT | | MATERIAL DOCUMENT AND CLASSIFICATION | AISI ASSN STD SINGLE MATERIAL RESPONSE OVERALL | | MATERIAL | STEEL COMP 416 OVERALL | | NOMINAL THREAD DIAMETER | 0.190 INCHES | | SPECIAL FEATURES | 16.0 MICROINCHES ON SECOND DIA. AND 32.0 MICROINCHES ON FORTH DIA | | SECOND DIAMETER FROM HEAD | 0.217 INCHES NOMINAL | | SURFACE TREATMENT | PASSIVATE OVERALL | | THIRD DIAMETER FROM HEAD | 0.160 INCHES NOMINAL | | THREAD CLASS | 2A | | THREAD LENGTH | 0.310 INCHES MINIMUM AND 0.370 INCHES MAXIMUM | | THREAD DIRECTION | RIGHT-HAND | | THREAD SERIES DESIGNATOR | UNF | | THREAD QUANTITY PER INCH | 32 |
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