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National Stock Number:
5305-01-227-4602
Federal Supply Class:
5305
National Item Identification Number:
012274602
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:
| MS3498-7 | 80205 | NATIONAL AEROSPACE STANDARDS COMMITTEE AEROSPACE INDUSTRIES ASSOCIATION OF AMERICA INC NOT FOR RFQ OR SOLICITATION USE | | MS3498-7 | 96906 | MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M |
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Techincal Specification:
| THREAD SERIES DESIGNATOR | UNC | | NOMINAL THREAD DIAMETER | 0.138 INCHES | | THREAD QUANTITY PER INCH | 32 | | THREAD CLASS | 2A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.225 INCHES MINIMUM AND | | 0.235 INCHES MAXIMUM | | FASTENER LENGTH | 0.535 INCHES MINIMUM AND | | 0.555 INCHES MAXIMUM | | MATERIAL | STEEL CORROSION RESISTING OVERALL | | MATERIAL DOCUMENT AND CLASSIFICATION | 5640 TYPE I ASSN STD ALL MATERIAL RESPONSES OR | | AISI T-303 ASSN STD ALL MATERIAL RESPONSES OVERALL | | HEAD STYLE | PAN NO. 2 | | HEAD DIAMETER | 0.255 INCHES MINIMUM AND | | 0.285 INCHES MAXIMUM | | HEAD HEIGHT | 0.060 INCHES MINIMUM AND | | 0.080 INCHES MAXIMUM | | INTERNAL DRIVE STYLE | SLOT | | EXTERNALLY RELIEVED BODY DIAMETER QUANTITY | 1 | | FIRST DIAMETER FROM HEAD | 0.084 INCHES MINIMUM AND | | 0.089 INCHES MAXIMUM | | DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER | 0.310 INCHES MINIMUM AND | | 0.320 INCHES MAXIMUM | | SPECIFICATION/STANDARD DATA | 96906-MS3498-7 GOVERNMENT STANDARD |
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