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National Stock Number:
5305-01-340-7388
Federal Supply Class:
5305
National Item Identification Number:
013407388
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:
| 12591810 | 19200 | US ARMY ARDEC RDECOM |
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Techincal Specification:
| THREAD SERIES DESIGNATOR | UNC | | NOMINAL THREAD DIAMETER | 0.250 INCHES | | THREAD QUANTITY PER INCH | 20 | | THREAD CLASS | 2A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.420 INCHES NOMINAL | | FASTENER LENGTH | 1.360 INCHES NOMINAL | | MATERIAL | STEEL OVERALL | | HEAD STYLE | FLUSH | | HEAD DIAMETER | 0.439 INCHES NOMINAL | | HEAD HEIGHT | 0.220 INCHES NOMINAL | | INTERNAL DRIVE STYLE | HEXAGON | | WIDTH ACROSS FLATS | 0.156 INCHES NOMINAL | | SHOULDER SHAPE | ROUND OVERALL | | SHOULDER DIAMETER | 0.258 INCHES NOMINAL FIRST SHOULDER | | 0.175 INCHES NOMINAL THIRD SHOULDER | | 0.250 INCHES NOMINAL FOURTH SHOULDER | | 0.3105 INCHES NOMINAL SECOND SHOULDER | | SHOULDER LENGTH | 0.075 INCHES NOMINAL FIRST SHOULDER | | 0.090 INCHES NOMINAL THIRD SHOULDER | | 0.420 INCHES NOMINAL FOURTH SHOULDER | | 0.775 INCHES NOMINAL SECOND SHOULDER | | THE MANUFACTURERS DATA | | | MANUFACTURERS CODE | 19200 | | DESIGN CONTROL REFERENCE | 12591810 |
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