Dormer E002 Powdered Metal Spiral Flute Threading Tap, Gold Oxide Finish, Round Shank With Square End, Modified Bottoming Chamfer, M3-0.50 Thread Size Size: M3-0.5 Model: 567869 Misc.

The Dormer MTT-X E002/MTT-X E012 powdered-metal steel spiral flute tap has a round shank with a square end, gold oxide finish, and a modified bottoming chamfer, and is used to create metric right-hand threads in a range of materials, with best performance in steel, aluminum and magnesium. It is available in two different thread specification standards: Metric Coarse (M) or Metric Fine (MF). The 48-degree spiral flutes of this tap pull chips back from the tip of the tool, up and out the hole to prevent clogging, making it suitable for blind or bottoming holes (with only one opening). Gold oxide is a low-temperature heat treatment that reduces grinding stress within the tool. 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). 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 tool can be used in machines, such as drill presses or lathes, or with hand tools such as tap wrenches.

In the Dormer MTT-X E002 series, taps with nominal diameters of 3 mm to 14 mm have three flutes and those with nominal diameters of 16 mm to 24 mm have four flutes. In the MTT-X E012 series, taps with nominal diameters of 4 mm to 14 mm have three flutes and those with nominal diameters of 16 mm to 22 mm have four flutes. All taps in both series 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 6H tolerance class: 6H is used for a normal length of thread engagement and medium tolerance quality.

Taps produce internal threads in previously formed holes