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National Stock Number:
5305-01-163-1981
Federal Supply Class:
5305
National Item Identification Number:
011631981
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:
| 0N295571 | 98230 | NATIONAL SECURITY AGENCY | | DBS-A1-18 | 0MTR9 | NORDEX, INCORPORATED | | DBS-A1-18 | 56262 | NORDEX INC |
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Techincal Specification:
| INTERNAL DRIVE STYLE | HEXAGON | | MATERIAL | STEEL COMP 303 OVERALL | | NOMINAL THREAD DIAMETER | 0.190 INCHES | | SHOULDER DIAMETER | 0.2485 INCHES MINIMUM AND 0.2495 INCHES MAXIMUM FIRST SHOULDER | | SHOULDER LENGTH | 0.188 INCHES MINIMUM AND 0.190 INCHES MAXIMUM FIRST SHOULDER | | SHOULDER SHAPE | ROUND FIRST SHOULDER | | CHAMFER ANGLE | 45.0 DEGREES NOMINAL | | FASTENER LENGTH | 0.438 INCHES MINIMUM AND 0.440 INCHES MAXIMUM | | HEAD DIAMETER | 0.375 INCHES NOMINAL | | HEAD HEIGHT | 0.187 INCHES NOMINAL | | HEAD STYLE | FLAT CHAMFER | | WIDTH ACROSS FLATS | 0.125 INCHES NOMINAL | | THREAD CLASS | 2A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.250 INCHES NOMINAL | | THREAD QUANTITY PER INCH | 32 | | THREAD SERIES DESIGNATOR | UNF |
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