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National Stock Number:
5305-01-271-2985
Federal Supply Class:
5305
National Item Identification Number:
012712985
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:
| 13281229 | 18876 | U S ARMY AVIATION AND MISSILE COMMAND | | 13281229 | 5S740 | MARION WORTHEY |
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Techincal Specification:
| DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER | 0.030 INCHES MINIMUM AND 0.035 INCHES MAXIMUM | | EXTERNALLY RELIEVED BODY DIAMETER QUANTITY | 1 | | FASTENER LENGTH | 0.125 INCHES MINIMUM AND 0.130 INCHES MAXIMUM | | FIRST DIAMETER FROM HEAD | 0.072 INCHES NOMINAL | | HEAD DIAMETER | 0.184 INCHES MINIMUM AND 0.185 INCHES MAXIMUM | | HEAD HEIGHT | 0.060 INCHES MINIMUM AND 0.065 INCHES MAXIMUM | | HEAD STYLE | DOUBLE CHAMFER | | INTERNAL DRIVE STYLE | SLOT | | MATERIAL | STEEL COMP 303SE OVERALL | | NOMINAL THREAD DIAMETER | 0.112 INCHES | | TEST DATA DOCUMENT | 18876-13281229 DRAWING (THIS IS THE BASIC GOVERNING DRAWING, SUCH AS A CONTRACTOR DRAWING, ORIGINAL EQUIPMENT MANUFACTURER DRAWING, ETC.; EXCLUDES ANY SPECIFICATION, STANDARD OR OTHER DOCUMENT THAT MAY BE REFERENCED IN A BASIC GOVERNING DRAWING) | | THREAD CLASS | 2A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.095 INCHES NOMINAL | | THREAD QUANTITY PER INCH | 48 | | THREAD SERIES DESIGNATOR | UNF |
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