Dormer A221N2 Centre Drill, Bright Coating, Cobalt High Speed Steel, 0.0781" Head Diameter, 5/64" Flute Length
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Plain-style combined drill and countersink creates a 60-degree countersink, which can be used as a center hole for machine centers118-degree conventional point drills a center hole while the two spiral flutes clear chips away to prevent cloggingCobalt steel provides extended tool life compared to high-speed steel drill bits when drilling hard materials and has an uncoated (bright) finishDouble-ended to provide two cutting endsMeets USCTI standards
상품설명
The Dormer A221 series cobalt steel combined drill and countersink has an uncoated (bright) finish and a plain style to create a center hole with a 60-degree countersink that can be used as a center hole for machine centers, and meets United States Cutting Tool Institute (USCTI) standards. The 118-degree conventional point drills a center hole, while the two spiral flutes clear chips away to prevent clogging. Cobalt steel provides extended tool life compared to high-speed steel drill bits, and maintains the tool\'s toughness and hardness in high drilling temperatures. The uncoated finish has no additional surface treatment or coating. The tool is double-ended to provide two cutting ends. The round shank accommodates most drill chucks. Combined drill and countersinks are fluted cutting tools that drill a shallow hole with a conical or gradually widened opening, also known as a countersink, into the surface of a workpiece. These tools, also called combined drill countersinks, drill-point countersinks or center drills, are commonly used to create center holes that act as a bearing surface for a machine center. Some types reduce the two-step process of creating a countersunk pilot hole into one. Dormer Pramet manufactures cutting tools under the following brands: Precision Twist Drill, Dormer, Union Butterfield and Pramet. The company has locations around the world, and provides tools adhering to ANSI, NAS, and DIN standards.
Plain-style combined drill and countersink creates a 60-degree countersink, which can be used as a center hole for machine centers118-degree conventional point drills a center hole while the two spiral flutes clear chips away to prevent cloggingCobalt steel provides extended tool life compared to high-speed steel drill bits when drilling hard materials and has an uncoated (bright) finishDouble-ended to provide two cutting endsMeets USCTI standards
상품설명
The Dormer A221 series cobalt steel combined drill and countersink has an uncoated (bright) finish and a plain style to create a center hole with a 60-degree countersink that can be used as a center hole for machine centers, and meets United States Cutting Tool Institute (USCTI) standards. The 118-degree conventional point drills a center hole, while the two spiral flutes clear chips away to prevent clogging. Cobalt steel provides extended tool life compared to high-speed steel drill bits, and maintains the tool\'s toughness and hardness in high drilling temperatures. The uncoated finish has no additional surface treatment or coating. The tool is double-ended to provide two cutting ends. The round shank accommodates most drill chucks. Combined drill and countersinks are fluted cutting tools that drill a shallow hole with a conical or gradually widened opening, also known as a countersink, into the surface of a workpiece. These tools, also called combined drill countersinks, drill-point countersinks or center drills, are commonly used to create center holes that act as a bearing surface for a machine center. Some types reduce the two-step process of creating a countersunk pilot hole into one. Dormer Pramet manufactures cutting tools under the following brands: Precision Twist Drill, Dormer, Union Butterfield and Pramet. The company has locations around the world, and provides tools adhering to ANSI, NAS, and DIN standards.
2019-04-16 20:34:41