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National Stock Number:
5305-01-042-5008
Federal Supply Class:
5305
National Item Identification Number:
010425008
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:
| 0N227971 | 98230 | NATIONAL SECURITY AGENCY |
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Techincal Specification:
| FASTENER LENGTH | 1.000 INCHES NOMINAL | | HEAD HEIGHT | 0.018 INCHES NOMINAL | | HEAD DIAMETER | 0.500 INCHES NOMINAL | | HEAD STYLE | FILLISTER | | INTERNAL DRIVE STYLE | SLOT | | MATERIAL | STEEL CORROSION RESISTING OVERALL | | PROPRIETARY CHARACTERISTICS | PACS | | NOMINAL THREAD DIAMETER | 0.250 INCHES | | SHOULDER LENGTH | 0.420 INCHES NOMINAL FIRST SHOULDER | | SHOULDER SHAPE | SQUARE FIRST SHOULDER | | SHOULDER WIDTH ACROSS FLATS | 0.270 INCHES NOMINAL FIRST SHOULDER | | SURFACE TREATMENT | PASSIVATE OVERALL | | THREAD LENGTH | 0.054 INCHES NOMINAL | | THREAD CLASS | 2A | | THREAD DIRECTION | RIGHT-HAND | | THREAD QUANTITY PER INCH | 28 | | THREAD SERIES DESIGNATOR | UNF |
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