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National Stock Number:
5305-01-249-7863
Federal Supply Class:
5305
National Item Identification Number:
012497863
Description:
SCREW,SHOULDER
Detail:
An externally threaded fastener whose threaded portion is of one nominal diameter, No 0 (0.060 IN.) (1.5 mm) or larger. It has a round unthreaded neck or shank all or part of which is of greater diameter than the threaded portion. The head is designed to be driven with either a wrench or an inserted driver or both in sizes below No. 10 (0.190 IN.) (5 mm) nominal diameter. No. 10 (0.190 IN.) (5 mm) and larger sizes must be designed for any type of inserted driver, but may also provide for external wrenching of the head. A locking feature may be incorporated in the design of the head or threads. For items which are both shouldered and have an externally relieved body, use SCREW, EXTERNALLY RELIEVED BODY. For items with a No. 10 (0.190 IN.) (5 mm) or larger thread diameter without an inserted driver head, use BOLT, SHOULDER. Excludes BOLT, INTERNAL WRENCHING and SCREW, CAP, SOCKET HEAD.
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Manufacturer Information:
| 6938-SS-0 | 55566 | MATTHEW WARREN, INC |
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Techincal Specification:
| FASTENER LENGTH | 0.5575 INCHES MINIMUM AND 0.5665 INCHES MAXIMUM | | HEAD DIAMETER | 0.371 INCHES MINIMUM AND 0.379 INCHES MAXIMUM | | HEAD HEIGHT | 0.178 INCHES MINIMUM AND 0.198 INCHES MAXIMUM | | HEAD STYLE | FLAT CHAMFER | | INTERNAL DRIVE STYLE | HEXAGON | | MATERIAL DOCUMENT AND CLASSIFICATION | ASTM-A-581,A-582 (NON MAGNETIC/ ASSN STD SINGLE MATERIAL RESPONSE OVERALL | | MATERIAL | STEEL CORROSION RESISTING OVERALL | | PROPRIETARY CHARACTERISTICS | NPAC | | NOMINAL THREAD DIAMETER | 0.190 INCHES | | SHOULDER LENGTH | 0.115 INCHES MINIMUM ALL SHOULDERS AND 0.135 INCHES MAXIMUM ALL SHOULDERS | | SHOULDER SHAPE | SQUARE ALL SHOULDERS | | SHOULDER WIDTH ACROSS FLATS | 0.245 INCHES MINIMUM ALL SHOULDERS AND 0.255 INCHES MAXIMUM ALL SHOULDERS | | WIDTH ACROSS FLATS | 0.125 INCHES NOMINAL | | THREAD CLASS | 2A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.245 INCHES MINIMUM AND 0.255 INCHES MAXIMUM | | THREAD QUANTITY PER INCH | 32 | | THREAD SERIES DESIGNATOR | UNF |
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