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National Stock Number:
5305-01-621-3765
Federal Supply Class:
5305
National Item Identification Number:
016213765
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:
| 802027297028-1 | 12255 | NAVY, UNITED STATES DEPARTMENT OF THE | | 93996A516 | 3A054 | MCMASTER-CARR SUPPLY CO |
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Techincal Specification:
| THREAD SERIES DESIGNATOR | UNC | | NOMINAL THREAD DIAMETER | 0.112 INCHES | | THREAD QUANTITY PER INCH | 40 | | THREAD CLASS | 2A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.151 INCHES MINIMUM AND | | 0.161 INCHES MAXIMUM | | FASTENER LENGTH | 0.281 INCHES NOMINAL | | MATERIAL | PLASTIC NYLON LOCKING FEATURE | | STEEL PROPERTY CLASS 18.8 FASTENER | | HEAD STYLE | FLAT CHAMFER | | HEAD DIAMETER | 0.250 INCHES NOMINAL | | HEAD HEIGHT | 0.120 INCHES MINIMUM AND | | 0.130 INCHES MAXIMUM | | CHAMFER ANGLE | 45.0 DEGREES NOMINAL | | INTERNAL DRIVE STYLE | HEXAGON | | WIDTH ACROSS FLATS | 0.078 INCHES NOMINAL | | LOCKING FEATURE | PATCH THREADS | | SHOULDER SHAPE | ROUND ALL SHOULDERS | | SHOULDER DIAMETER | 0.124 INCHES MINIMUM AND | | 0.125 INCHES MAXIMUM ALL SHOULDERS | | SHOULDER LENGTH | 0.125 INCHES MINIMUM AND | | 0.127 INCHES MAXIMUM ALL SHOULDERS | | PART NAME ASSIGNED BY CONTROLLING AGENCY | SHOULDER SCREW,SELF-LOCKING |
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