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National Stock Number:
5305-01-399-0187
Federal Supply Class:
5305
National Item Identification Number:
013990187
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:
| 211033409 | 53711 | NAVAL SEA SYSTEMS COMMAND | | 751-6402301 ITEM 39 | 53711 | NAVAL SEA SYSTEMS COMMAND | | 751-6402301-39 | 53711 | NAVAL SEA SYSTEMS COMMAND | | 751-6402302-39 | 53711 | NAVAL SEA SYSTEMS COMMAND | | 751-6402386-1 | 53711 | NAVAL SEA SYSTEMS COMMAND |
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Techincal Specification:
| THREAD SERIES DESIGNATOR | UNC | | NOMINAL THREAD DIAMETER | 0.250 INCHES | | THREAD QUANTITY PER INCH | 20 | | THREAD CLASS | 2A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.500 INCHES NOMINAL | | FASTENER LENGTH | 0.875 INCHES NOMINAL | | MATERIAL | NICKEL ALLOY R-405 OVERALL | | MATERIAL DOCUMENT AND CLASSIFICATION | QQ-N-281, CL B FORM 1, COND CD FED SPEC SINGLE MATERIAL RESPONSE OVERALL | | HEAD STYLE | HEXAGON | | HEAD HEIGHT | 0.250 INCHES NOMINAL | | WIDTH BETWEEN FLATS | 0.362 INCHES MINIMUM AND | | 0.375 INCHES MAXIMUM | | INTERNAL DRIVE STYLE | W/O INTERNAL DRIVE | | LOCKING FEATURE | PATCH OR | | PELLET OR | | STRIP THREADS | | SHOULDER SHAPE | ROUND FIRST SHOULDER | | SHOULDER DIAMETER | 0.245 INCHES MINIMUM AND | | 0.250 INCHES MAXIMUM FIRST SHOULDER | | SHOULDER LENGTH | 0.178 INCHES MINIMUM AND | | 0.188 INCHES MAXIMUM FIRST SHOULDER |
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