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National Stock Number:
5305-01-304-0635
Federal Supply Class:
5305
National Item Identification Number:
013040635
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:
| A3004796 | 80063 | US ARMY COMMUNICATIONS & ELECTRONICS MATERIEL READINESS COMMAND LOGISTICS ENGINEERING DIR |
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Techincal Specification:
| THREAD SERIES DESIGNATOR | UNC | | NOMINAL THREAD DIAMETER | 0.138 INCHES | | THREAD QUANTITY PER INCH | 32 | | THREAD CLASS | 3A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.145 INCHES NOMINAL | | FASTENER LENGTH | 0.310 INCHES NOMINAL | | MATERIAL | STEEL COMP 303SE OVERALL | | MATERIAL DOCUMENT AND CLASSIFICATION | ASTM A581 ASSN STD SINGLE MATERIAL RESPONSE OVERALL | | SURFACE TREATMENT | PASSIVATE OVERALL | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL | | HEAD STYLE | FLAT CHAMFER | | HEAD DIAMETER | 0.250 INCHES MINIMUM AND | | 0.262 INCHES MAXIMUM | | HEAD HEIGHT | 0.072 INCHES MINIMUM AND | | 0.082 INCHES MAXIMUM | | INTERNAL DRIVE STYLE | SLOT | | POINT STYLE | FLAT | | EXTERNALLY RELIEVED BODY DIAMETER QUANTITY | 1 | | FIRST DIAMETER FROM HEAD | 0.139 INCHES MINIMUM AND | | 0.149 INCHES MAXIMUM | | SECOND DIAMETER FROM HEAD | 0.098 INCHES MINIMUM AND | | 0.105 INCHES MAXIMUM | | DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER | 0.120 INCHES MINIMUM AND | | 0.130 INCHES MAXIMUM | | DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF SECOND DIAMETER | 0.165 INCHES NOMINAL |
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