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National Stock Number: 5305-01-227-0581
Federal Supply Class: 5305
National Item Identification Number: 012270581
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:
3176209-C-568 | 10001 | NAVAIR AND NAVSEA MANAGED ORIGINAL DESIGN ACTIVITY DWG NOT MATERIAL/PARTS SUPPLIER | 5305PL1274238 | 9009H | INSPEKTORAT WSPARCIA SIL ZBROJNYCH |
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Techincal Specification:
COUNTERSINK ANGLE | 80.0 DEGREES MINIMUM AND 84.0 DEGREES MAXIMUM | FASTENER LENGTH | 0.470 INCHES MINIMUM AND 0.500 INCHES MAXIMUM | HARDNESS RATING | 80.0 ROCKWELL B MINIMUM OVERALL | HEAD DIAMETER | 0.480 INCHES MINIMUM AND 0.531 INCHES MAXIMUM | HEAD STYLE | FLAT COUNTERSUNK | INTERNAL DRIVE STYLE | HEXAGON | LOCKING FEATURE | PATCH THREADS | MATERIAL | STEEL COMP 302 OR STEEL COMP 304 OR STEEL COMP 305 OR STEEL COMP 316 OR STEEL COMP 384 OR STEEL COMP XM-7 OVERALL | MINIMUM TENSILE STRENGTH | 80000 POUNDS PER SQUARE INCH | NOMINAL THREAD DIAMETER | 0.250 INCHES | WIDTH ACROSS FLATS | 0.156 INCHES NOMINAL | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL | SURFACE TREATMENT | PASSIVATE OVERALL | THREAD DIRECTION | RIGHT-HAND | THREAD LENGTH | 0.209 INCHES MINIMUM AND 0.339 INCHES MAXIMUM | THREAD CLASS | 3A | THREAD SERIES DESIGNATOR | UNC | THREAD QUANTITY PER INCH | 20 |
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