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National Stock Number:
5305-01-434-2286
Federal Supply Class:
5305
National Item Identification Number:
014342286
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:
| A3167839-1 | 80063 | US ARMY COMMUNICATIONS & ELECTRONICS MATERIEL READINESS COMMAND LOGISTICS ENGINEERING DIR |
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Techincal Specification:
| COLOR | BLACK OVERALL | | DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER | 7.0 MILLIMETERS NOMINAL | | EXTERNAL THREAD TOLERANCE CLASS | 6G | | EXTERNALLY RELIEVED BODY DIAMETER QUANTITY | 1 | | FASTENER LENGTH | 9.62 MILLIMETERS MINIMUM AND 10.38 MILLIMETERS MAXIMUM | | FIRST DIAMETER FROM HEAD | 2.23 MILLIMETERS NOMINAL | | HEAD DIAMETER | 5.5 MILLIMETERS MINIMUM AND 5.8 MILLIMETERS MAXIMUM | | HEAD HEIGHT | 1.52 MILLIMETERS MINIMUM AND 1.98 MILLIMETERS MAXIMUM | | HEAD STYLE | PAN NO. 2 | | INTERNAL DRIVE STYLE | CROSS RECESS TYPE 1 | | MATERIAL | IRON ALLOY 660 OVERALL | | NOMINAL THREAD DIAMETER | 3.0 MILLIMETERS | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-13924 CL 4 MIL SPEC ALL TREATMENT RESPONSES OVERALL | | SURFACE TREATMENT | OXIDE OVERALL | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 3.75 MILLIMETERS MINIMUM AND 4.25 MILLIMETERS MAXIMUM | | THREAD PITCH IN MILLIMETERS | 0.5 | | THREAD SERIES DESIGNATOR | M |
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