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Dormer MTT-X E097 Powdered Metal Thread Forming Tap, Chromium Nitride Coated, Round Shank With Square End, Modified Bottoming Chamfer

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Product Specifications
Manufacturer Series #
MTT-X E097
Surface Coating
Chromium Nitride
Shank Type
Round With Square End
Pitch Diameter Limit
6HX
Material Type
High Speed Steel
Thread Type
Metric
UNSPSC Code
27112806
Chamfer Type
Semi-Bottoming
Brand Name
Dormer

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Currently showing 1-4 of 4
M4-0.7 4 mm 14 mm 53 mm 599914 B003JY6SXM yes $25.16 Buy Options
M6-1 6.3 mm 13 mm 66 mm 599938 B003JY6SZ0 yes $26.35 Buy Options
M8-1.25 8 mm 16 mm 72 mm 599945 B003JY6SZK yes $28.51 Buy Options
M12-1.75 9 mm 22 mm 89 mm 599969 B003JY6SUA yes $41.85 Buy Options

Key Features

  • Thread forming tap cold-forms threads in through holes and blind holes without producing chips
  • Chromium nitride (CrN) coating reduces likelihood of buildup at the cutting edge and improves edge sharpness
  • Powdered-metal steel for performance approaching that of solid carbide tools, with the toughness and shock-resistance of high-speed steel
  • No lubricant grooves, for interrupted holes and through holes in thin sections
  • Modified bottoming chamfer has additional length to reduce chip load, add tool life, and permit higher tapping speeds

Product Description

The Dormer MTT-X E097 powdered-metal steel thread forming tap has a round shank with a square end, chromium nitride (CrN) coating, and no lubricant grooves, and is used for cold-forming metric right-hand threads in ductile materials such as steel, titanium, nickel, and aluminum. It is suitable for threading through holes (extending through the workpiece) and blind or bottoming holes (with only one opening). The CrN coating provides a hard, low-friction coating, which reduces likelihood of material buildup at the tool’s cutting edge and improves edge sharpness. This tap is designed with no grooves to make it suitable for interrupted holes and for through holes in thin sections. Its 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). Powdered-metal steel offers performance that approaches that of solid carbide tools but with the toughness and shock-resistance of high-speed steel. The round shank with square end helps to minimize rotation in the tool holder. This thread forming tap can be used in machines such as drill presses or lathes.

In the Dormer MTT-X E097 series, all taps have modified bottoming chamfers. This tap conforms to ISO 529 standards and can create threads to a depth two-and-a-half times its diameter. It is suitable for the 6HX tolerance class: 6HX exceeds the standard tolerance to increase tool life in tapping high-strength or abrasive materials that do not create oversize problems.

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 tool; and spiral flute taps pull chips back from the tip of the tool, up and out the hole. Thread forming taps, also known as cold forming taps, press rather than cut to create threads in a drilled hole, and no chips are created. Pipe taps create threads in pipes and pipe fittings. Each thread type designates a thread profile and each type is identified with an abbreviation. In the U.S. and Canada, the Unified Thread Standard is the dominant thread type, including UNC (Unified Coarse), UNF (Unified Fine), and NPT (National Pipe Taper) threads, among others.

Precision Dormer manufactures cutting tools under the following brands: Precision Twist, Dormer, and Union Butterfield. The company has locations around the world, and provides tools adhering to ANSI, NAS, and DIN standards.

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