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National Stock Number:
5305-00-229-3663
Federal Supply Class:
5305
National Item Identification Number:
002293663
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:
| 41000337 | 81873 | WOODWARD HRT INC |
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Techincal Specification:
| THREAD SERIES DESIGNATOR | UNF | | NOMINAL THREAD DIAMETER | 0.250 INCHES | | THREAD QUANTITY PER INCH | 28 | | THREAD CLASS | 3A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.377 INCHES MINIMUM AND | | 0.427 INCHES MAXIMUM | | FASTENER LENGTH | 1.600 INCHES MINIMUM AND | | 1.640 INCHES MAXIMUM | | MATERIAL | STEEL COMP 631 OVERALL | | SURFACE TREATMENT | PASSIVATE OVERALL | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | HRPS161,FSCM 81873 MFR REF SINGLE TREATMENT RESPONSE OVERALL | | MINIMUM TENSILE STRENGTH | 220000 POUNDS PER SQUARE INCH | | HEAD STYLE | FLAT CHAMFER | | HEAD DIAMETER | 0.420 INCHES MINIMUM AND | | 0.440 INCHES MAXIMUM | | HEAD HEIGHT | 0.190 INCHES MINIMUM AND | | 0.210 INCHES MAXIMUM | | INTERNAL DRIVE STYLE | SLOT | | SHOULDER SHAPE | ROUND FIRST SHOULDER | | SHOULDER DIAMETER | 0.3095 INCHES MINIMUM AND | | 0.3110 INCHES MAXIMUM FIRST SHOULDER | | SHOULDER LENGTH | 1.213 INCHES MINIMUM AND | | 1.223 INCHES MAXIMUM FIRST SHOULDER | | DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER | 1.493 INCHES MINIMUM AND | | 1.503 INCHES MAXIMUM FIRST HOLE | | SHANK UNTHREADED HOLE DIAMETER | 0.070 INCHES MINIMUM AND | | 0.080 INCHES MAXIMUM FIRST HOLE | | THE MANUFACTURERS DATA | | | MANUFACTURERS CODE | 81873 | | DESIGN CONTROL REFERENCE | 41000337 |
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