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National Stock Number:
5305-01-181-2490
Federal Supply Class:
5305
National Item Identification Number:
011812490
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:
| 5562235 PIECE 259 | 53711 | NAVAL SEA SYSTEMS COMMAND | | NICU-MS51975-22 | 70318 | ALLMETAL SCREW PRODUCTS CORP |
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Techincal Specification:
| FASTENER LENGTH | 2.235 INCHES MINIMUM AND 2.255 INCHES MAXIMUM | | HEAD DIAMETER | 0.543 INCHES MINIMUM AND 0.562 INCHES MAXIMUM | | HEAD HEIGHT | 0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM | | HEAD STYLE | FLAT CHAMFER | | INTERNAL DRIVE STYLE | HEXAGON | | MATERIAL DOCUMENT AND CLASSIFICATION | QQ-N-281,COMP A FED SPEC SINGLE MATERIAL RESPONSE OVERALL | | MATERIAL | NICKEL ALLOY 400 OVERALL | | PART NAME ASSIGNED BY CONTROLLING AGENCY | NAVY SPECIAL PROJECT | | NOMINAL THREAD DIAMETER | 0.312 INCHES | | SHOULDER DIAMETER | 0.371 INCHES MINIMUM AND 0.373 INCHES MAXIMUM FIRST SHOULDER | | SHOULDER LENGTH | 1.745 INCHES MINIMUM AND 1.755 INCHES MAXIMUM FIRST SHOULDER | | SHOULDER SHAPE | ROUND FIRST SHOULDER | | THREAD CLASS | 3A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.480 INCHES MINIMUM AND 0.500 INCHES MAXIMUM | | THREAD QUANTITY PER INCH | 18 | | THREAD SERIES DESIGNATOR | UNC | | WIDTH ACROSS FLATS | 0.188 INCHES NOMINAL |
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