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National Stock Number:
5305-01-334-6649
Federal Supply Class:
5305
National Item Identification Number:
013346649
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:
| 13264785 | 18876 | U S ARMY AVIATION AND MISSILE COMMAND | | 13264785 | 81205 | THE BOEING COMPANY |
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Techincal Specification:
| DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER | 0.200 INCHES NOMINAL FIRST HOLE | | COLOR | BLACK OVERALL | | FASTENER LENGTH | 2.250 INCHES NOMINAL | | HARDNESS RATING | 39.0 ROCKWELL C MINIMUM OVERALL AND 45.0 ROCKWELL C MAXIMUM OVERALL | | HEAD DIAMETER | 0.365 INCHES MINIMUM AND 0.375 INCHES MAXIMUM | | HEAD HEIGHT | 0.244 INCHES MINIMUM AND 0.250 INCHES MAXIMUM | | HEAD STYLE | FLAT CHAMFER | | INTERNAL DRIVE STYLE | HEXAGON | | MATERIAL | STEEL OVERALL | | PROPRIETARY CHARACTERISTICS | PACS | | MINIMUM TENSILE STRENGTH | 180000 POUNDS PER SQUARE INCH | | NOMINAL THREAD DIAMETER | 0.250 INCHES | | SHANK UNTHREADED HOLE DIAMETER | 0.075 INCHES MINIMUM FIRST HOLE AND 0.080 INCHES MAXIMUM FIRST HOLE | | WIDTH ACROSS FLATS | 0.187 INCHES MINIMUM AND 0.190 INCHES MAXIMUM | | SURFACE TREATMENT | OXIDE OVERALL | | THREAD CLASS | 3A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 2.000 INCHES NOMINAL | | THREAD QUANTITY PER INCH | 28 | | THREAD SERIES DESIGNATOR | UNRF |
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