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Dormer E653 High-Speed Steel Combination Drill
Dormer E653 High-Speed Steel Combination Drill
Dormer E653 High-Speed Steel Combination Drill
Dormer E653 High-Speed Steel Combination Drill

Dormer E653 High-Speed Steel Combination Drill and Pipe Tap, NPT, Uncoated (Bright) Finish, Round Shank With Square End

Product ID : 24090898


Galleon Product ID 24090898
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Manufacturer Dormer
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Dormer E653 High-Speed Steel Combination Drill Features

  • Combination drill and tap creates holes and cuts threads in one operation for efficient tooling

  • Spiral flutes pull chips back from the tip of the tool and out of the hole to prevent clogging

  • For creating and threading through holes

  • NPT (National Pipe Taper) for compatibility with a range of threads

  • Modified bottoming chamfer has additional length to reduce chip load, add tool life, and permit higher tapping speeds


About Dormer E653 High-Speed Steel Combination Drill

The Dormer E653 uncoated, high-speed steel spiral flute tap and drill combination has a round shank with a square end and a modified bottoming chamfer, and is used to drill holes and create NPT (National Pipe Taper) right-hand threads in a range of materials. The tool drills and threads holes in one operation. Its 27-degree spiral flutes pull chips back from the tip of the tool, up and out of the hole to prevent clogging, making it suitable for use in through holes (extending through the workpiece). The modified bottoming chamfer has additional length to reduce chip load, add tool life in difficult to machine materials, and permit higher tapping speeds. Right-hand threads are designed to tighten when a head or nut is rotated clockwise (the most common threading direction). High-speed steel (HSS) is a common general-purpose steel for cutting tools and is compatible with a variety of materials. With no coating or surface treatment, this uncoated tool can be used on a broad range of materials and provides an economical alternative to coated tools. The round shank with square end helps to minimize rotation in the tool holder. This tool can be used in machines, such as drill presses or lathes, or with hand tools such as tap wrenches. In the Dormer E653 series all tools have two flutes and modified bottoming chamfers. This tool conforms to ANSI standards and can drill and create threads to a depth one-and-a-half times its diameter. It is suitable for normal pipe thread tolerance. Combination drill and tap tools are designed to create holes and cut threads in one pass. Taps produce internal threads in previously formed holes and can be used in machines (such as drill presses) or with hand tools. Common types of taps include hand taps, spiral point taps, spiral flute taps, thread forming taps, and pipe taps. Hand taps (straight-flute taps) collect chips in the straight flutes of the tool; spiral point taps push chips through holes ahead of the too