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National Stock Number:
5305-01-277-4981
Federal Supply Class:
5305
National Item Identification Number:
012774981
Description:
SCREW,CAP,SOCKET HEAD
Detail:
An externally threaded fastener whose threaded portion is of one nominal diameter. The head has an internal socket or multiple spline for use with an inserted driver. A locking feature may be incorporated in the design of the head or threads. Excludes items with bevel (conical) heads. See BOLT, INTERNAL WRENCHING. Excludes SCREW, SHOULDER; and SCREW, MACHINE.
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Manufacturer Information:
| 60-23-0087 | 96169 | ELECTRIC BOAT CORPORATION | | 6808886-2 | 53711 | NAVAL SEA SYSTEMS COMMAND | | 708-4674144 ITEM 6 | 80064 | NAVAL SHIP SYSTEMS COMMAND |
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Techincal Specification:
| COUNTERSINK ANGLE | 82.0 DEGREES NOMINAL | | FASTENER LENGTH | 0.750 INCHES NOMINAL | | HEAD DIAMETER | 0.452 INCHES MINIMUM AND 0.507 INCHES MAXIMUM | | HEAD STYLE | FLAT COUNTERSUNK | | INTERNAL DRIVE STYLE | SLOT | | LOCKING FEATURE | STRIP OR PELLET OR PATCH THREADS | | MATERIAL DOCUMENT AND CLASSIFICATION | QQ-N-281 CL A ASSN STD SINGLE MATERIAL RESPONSE FASTENER | | MATERIAL | NICKEL ALLOY R-405 FASTENER | | MINIMUM TENSILE STRENGTH | 80000 POUNDS PER SQUARE INCH | | NOMINAL THREAD DIAMETER | 0.250 INCHES | | PART NAME ASSIGNED BY CONTROLLING AGENCY | SCREW, MACHINE SELF-LOCKING FLATHEAD | | THREAD DIRECTION | RIGHT-HAND | | THREAD CLASS | 2A | | THREAD LENGTH | 0.472 INCHES MINIMUM AND 0.597 INCHES MAXIMUM | | THREAD SERIES DESIGNATOR | UNC | | THREAD QUANTITY PER INCH | 20 |
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