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National Stock Number: 5305-00-027-7270
Federal Supply Class: 5305
National Item Identification Number: 000277270
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:
BACB30EF4-3 | 81205 | THE BOEING COMPANY | BACB30LU4P3 | 06710 | VALLEY-TODECO, INC. | BACB30LU4P3 | 06725 | SPS TECHNOLOGIES, LLC | BACB30LU4P3 | 06950 | HOWMET GLOBAL FASTENING SYSTEMS INC | BACB30LU4P3 | 17943 | FEDERAL MANUFACTURING CORP | BACB30LU4P3 | 27624 | SPS TECHNOLOGIES LLC | BACB30LU4P3 | 57928 | SONIC INDUSTRIES, INC. | BACB30LU4P3 | 73197 | HI-SHEAR CORPORATION | BACB30LU4P3 | 80539 | SPS TECHNOLOGIES, LLC | BACB30LU4P3 | 81205 | THE BOEING COMPANY | BACB30LU4P3 | L4528 | LISI AEROSPACE CANADA CORP DIV HI SHEAR HOLDINGS INC |
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Techincal Specification:
COUNTERSINK ANGLE | 99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM | FASTENER LENGTH | 0.655 INCHES NOMINAL | HARDNESS RATING | 36.0 ROCKWELL C MINIMUM AND 43.0 ROCKWELL C MAXIMUM OVERALL | HEAD DIAMETER | 0.510 INCHES NOMINAL | HEAD STYLE | FLAT COUNTERSUNK | INTERNAL DRIVE STYLE | CROSS RECESS TYPE 1 | LOCKING FEATURE | PATCH OR PELLET OR STRIP THREADS | MATERIAL | STEEL OVERALL | NOMINAL THREAD DIAMETER | 0.250 INCHES | SPECIFICATION/STANDARD DATA | 81205-BACB30EF MANUFACTURERS STANDARD | SURFACE TREATMENT | CADMIUM OVERALL | THREAD CLASS | 3A | THREAD DIRECTION | RIGHT-HAND | THREAD LENGTH | 0.468 INCHES MINIMUM | THREAD SERIES DESIGNATOR | UNF | THREAD QUANTITY PER INCH | 28 |
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