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  Our Catalog   Cutting Tools   Threading Taps   Spiral Point Taps

Dormer E0255/163FL Spiral Point Taps, Cobalt High Speed Steel, UNC5/16, Full Length 2.23/32", Flute Length 0.5939", Shank Diameter 0.3180"


On Sale Now! Save 3% on the Dormer E0255/163FL Spiral Point Taps, Cobalt High Speed Steel, UNC5/16, Full Length 2.23/32'', Flute Length 0.5939'', Shank Diameter 0.3180'' by Dormer at In The National Interest. MPN: E0255/163FL. Hurry! Limited time offer. Offer valid only while supplies last. The Dormer MTT-X E025/MTT-X E035 powdered-metal steel spiral point tap has a round shank with a square end, gold oxide finish, and a plug chamfer,


Product Description

The Dormer MTT-X E025/MTT-X E035 powdered-metal steel spiral point tap has a round shank with a square end, gold oxide finish, and a plug chamfer, and is used to create right-hand threads in a range of materials, with best performance in steel, copper, brass, aluminum, and magnesium. It is available in two different ANSI thread specification standards: UNC (Unified Coarse) and UNF (Unified Fine). The spiral point of this tap (sometimes referred to as a “gun tap”) pushes chips ahead of the tool and the straight flutes reduce clogging. Both characteristics make it suitable for threading through holes (extending through the workpiece). Gold oxide is a low-temperature heat treatment that reduces grinding stress within the tool. A plug chamfer distributes cutting to ease tapping at the beginning of the hole and to maintain correct perpendicular alignment with the workpiece.

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 E025/MTT-X E035 series, taps in machine screw sizes 6 to 12 have two flutes, taps with nominal diameters of 1/4” to 3/8” are available with two or three flutes, taps with a nominal diameter of 7/16” have three flutes, those with nominal diameters of 1/2” are available with two or three flutes, and those with nominal diameters of 9/16” to 1” have three flutes. All taps in both series have plug chamfers. This tap conforms to ANSI standards and can create threads to a depth two-and-a-half times its diameter. It is suitable for the 3B tolerance class: 3B produces close-tolerance fasteners that resist loosening, as in aerospace applications.

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.

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.

Features & Highlights

  • Spiral point and straight flutes for cutting threads in through holes
  • Spiral point pushes chips ahead of tool to reduce clogging
  • Powdered-metal steel for performance approaching that of solid carbide tools, with the toughness and shock-resistance of high-speed steel
  • Gold oxide finish reduces grinding stress within the tool
  • Available in UNC (Unified Coarse) and UNF (Unified Fine) right-hand thread options for different applications

Additional Information

Manufacturer:Precision Dormer
Brand:Dormer
Model:0581148
Part Number:E0255/163FL
Publisher:Precision Dormer
Studio:Precision Dormer
MPN:E0255/163FL
EAN:7320760581148
Package Weight:0.06 pounds
Package Size:0.98 x 0.98 x 0.98 inches

Dormer E0255/163FL Spiral Point Taps, Cobalt High Speed Steel, UNC5/16, Full Length 2.23/32'', Flute Length 0.5939'', Shank Diameter 0.3180'' by Dormer

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Dormer E0255/163FL Spiral Point Taps, Cobalt High Speed Steel, UNC5/16, Full Length 2.23/32", Flute Length 0.5939", Shank Diameter 0.3180"

Brand: Dormer
Condition: New
Lead Time: 1 - 2 Business Days
Availability: In Stock
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You Save: 3%


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