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National Stock Number:
5305-00-256-1383
Federal Supply Class:
5305
National Item Identification Number:
002561383
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:
| 0N056305-1 | 98230 | NATIONAL SECURITY AGENCY |
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Techincal Specification:
| DISTANCE FROM CENTERLINE TO FLAT | 0.245 INCHES MINIMUM AND 0.255 INCHES MAXIMUM | | FASTENER LENGTH | 1.456 INCHES MINIMUM AND 1.464 INCHES MAXIMUM | | FEATURES PROVIDED | CASEHARDENED | | HEAD DIAMETER | 0.749 INCHES MINIMUM AND 0.751 INCHES MAXIMUM | | HEAD HEIGHT | 0.130 INCHES MINIMUM AND 0.140 INCHES MAXIMUM | | INTERNAL DRIVE STYLE | W/O INTERNAL DRIVE | | MATERIAL DOCUMENT AND CLASSIFICATION | Q-N-290 CL 1 TYPE 5 FED SPEC 13TH MATERIAL RESPONSE OVERALL | | MATERIAL | COPPER OVERALL | | NOMINAL THREAD DIAMETER | 0.250 INCHES | | SHOULDER DIAMETER | 0.446 INCHES NOMINAL FIRST SHOULDER | | SHOULDER LENGTH | 0.446 INCHES NOMINAL FIRST SHOULDER | | SHOULDER SHAPE | ROUND FIRST SHOULDER | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | Q-N-290 CL 1 TYPE 5 FED SPEC 13TH TREATMENT RESPONSE OVERALL | | SURFACE TREATMENT | NICKEL OVERALL | | THREAD CLASS | AL | | THREAD DIRECTION | LEFT-HAND | | THREAD LENGTH | 0.570 INCHES MINIMUM AND 0.590 INCHES MAXIMUM | | THREAD QUANTITY PER INCH | 28 | | THREAD SERIES DESIGNATOR | UNF |
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