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National Stock Number:
5305-01-396-9150
Federal Supply Class:
5305
National Item Identification Number:
013969150
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:
| 51218-1-108 | 98425 | ERIE ENGINEERED PRODUCTS, INC. |
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Techincal Specification:
| DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER | 1.250 INCHES NOMINAL | | DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF SECOND DIAMETER | 1.870 INCHES NOMINAL | | EXTERNALLY RELIEVED BODY DIAMETER QUANTITY | 1 | | FASTENER LENGTH | 2.750 INCHES NOMINAL | | FIRST DIAMETER FROM HEAD | 0.500 INCHES NOMINAL | | HEAD STYLE | HEXAGON | | HOLE CONFIGURATION STYLE | HEXAGON FLATS | | HOLE DIAMETER | 0.107 INCHES MINIMUM AND 0.112 INCHES MAXIMUM | | HOLE QUANTITY | 1 | | HOLE TYPE | DRILLED | | PART NAME ASSIGNED BY CONTROLLING AGENCY | NAVY SPECIAL PROJECT | | NOMINAL THREAD DIAMETER | 0.500 INCHES | | SECOND DIAMETER FROM HEAD | 0.405 INCHES MINIMUM AND 0.420 INCHES MAXIMUM | | THREAD CLASS | 2A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.880 INCHES NOMINAL | | THREAD QUANTITY PER INCH | 13 | | THREAD SERIES DESIGNATOR | UNIFIED NATIONAL COARSE (UNC) |
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