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National Stock Number:
5305-01-377-3771
Federal Supply Class:
5305
National Item Identification Number:
013773771
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:
| 951731-3 | 06481 | NORTHROP GRUMMAN SYSTEMS CORPORATION | | X62750 | 51506 | ACCURATE SCREW MACHINE CORP |
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Techincal Specification:
| FASTENER LENGTH | 0.470 INCHES MINIMUM AND 0.472 INCHES MAXIMUM | | HEAD DIAMETER | 0.151 INCHES MINIMUM AND 0.161 INCHES MAXIMUM | | HEAD HEIGHT | 0.186 INCHES MINIMUM AND 0.187 INCHES MAXIMUM | | HEAD STYLE | PAN NO. 2 | | INTERNAL DRIVE STYLE | HEXAGON | | MATERIAL | STEEL COMP 303 OR STEEL COMP 303 PLUS X OR STEEL COMP 303MA OR STEEL COMP 303PB OR STEEL COMP 303SE OVERALL | | III PART NAME ASSIGNED BY CONTROLLING AGENCY | NAVY SPECIAL PROJECT | | PROPRIETARY CHARACTERISTICS | PACS | | NOMINAL THREAD DIAMETER | 0.164 INCHES | | SHOULDER LENGTH | 0.375 INCHES NOMINAL FIRST SHOULDER | | SHOULDER SHAPE | SQUARE FIRST SHOULDER | | SHOULDER WIDTH ACROSS FLATS | 0.186 INCHES MINIMUM AND 0.187 INCHES MAXIMUM FIRST SHOULDER | | WIDTH ACROSS FLATS | 0.297 INCHES MINIMUM AND 0.327 INCHES MAXIMUM | | SURFACE TREATMENT | PASSIVATE OVERALL | | THREAD CLASS | 2A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.408 INCHES MINIMUM AND 0.472 INCHES MAXIMUM | | THREAD QUANTITY PER INCH | 32 | | THREAD SERIES DESIGNATOR | UNC |
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