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National Stock Number:
5305-01-218-3163
Federal Supply Class:
5305
National Item Identification Number:
012183163
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:
| C3998-4-4 | 81755 | LOCKHEED MARTIN CORPORATION | | TW-2 | 99862 | CARR LANE MANUFACTURING CO |
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Techincal Specification:
| FASTENER LENGTH | 0.344 INCHES MINIMUM AND 0.406 INCHES MAXIMUM | | HEAD DIAMETER | 0.344 INCHES MINIMUM AND 0.406 INCHES MAXIMUM | | HEAD HEIGHT | 0.094 INCHES MINIMUM AND 0.156 INCHES MAXIMUM | | HEAD STYLE | PAN NO. 2 | | INTERNAL DRIVE STYLE | SLOT | | MATERIAL | STEEL OVERALL | | NOMINAL THREAD DIAMETER | 0.190 INCHES | | SHOULDER DIAMETER | 0.219 INCHES MINIMUM AND 0.281 INCHES MAXIMUM FIRST SHOULDER | | SHOULDER LENGTH | 0.094 INCHES MINIMUM AND 0.156 INCHES MAXIMUM FIRST SHOULDER | | SHOULDER SHAPE | ROUND FIRST SHOULDER | | THREAD CLASS | 2A | | THREAD LENGTH | 0.219 INCHES MINIMUM AND 0.281 INCHES MAXIMUM | | THREAD DIRECTION | RIGHT-HAND | | THREAD SERIES DESIGNATOR | UNF | | THREAD QUANTITY PER INCH | 32 |
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