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Union Butterfield 1567(NPTF) High-Speed Steel Pipe Tap, Interrupted Thread, Uncoated (Bright) Finish, Round Shank with Square End

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Product Specifications
Surface Coating
Uncoated (Bright)
Pitch Diameter Limit
6H
Material Type
High Speed Steel
Thread Type
NPTF
Chamfer Type
Pipe Tap
Brand Name
Union Butterfield
Manufacturer Series #
1567(NPTF)
Shank Type
Round With Square End
Number of Flutes
5
UNSPSC Code
31201519

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Currently showing 1-8 of 8
1/8"-27 0.438" 0.75" 2.125" 1010561 B003JY64AY yes $27.90 Buy Options
1/8"-27 0.313" 0.75" 2.125" 1010570 B003JY64CC yes $27.90 Buy Options
1/4"-18 0.563" 1.0625" 2.4375" 1010562 B003JY64A4 yes $29.62 Buy Options
3/8"-18 0.7" 1.0625" 2.5625" 1010563 B003JY64F4 yes $36.00 Buy Options
1/2"-14 0.688" 1.375" 3.125" 1010564 B003JY649A yes $58.35 Buy Options
3/4"-14 0.906" 1.375" 3.25" 1010565 B003JY64E0 yes $82.15 Buy Options
1-1/4"-11.5 1.313" 1.75" 4" 1010567 B003JY648Q yes $161.21 Buy Options
1"-11.5 1.125" 1.75" 3.75" 1010566 B003JY64D6 yes $120.62 Buy Options

Key Features

  • Pipe tap cuts threads in pipes and pipe fittings
  • NPTF (National Pipe Taper Fuel) threads for leak-free seals without the use of sealants
  • Straight flutes to cut threads in through holes and blind holes
  • Interrupted thread for more lubrication and better chip disposal than continuous thread
  • Round shank with square end helps to minimize rotation in the tool holder

Product Description

The Union Butterfield 1567(NPTF) uncoated, high-speed steel pipe tap has straight flutes, interrupted threads, and a round shank with a square end, and is used to create NPTF (National Pipe Taper Fuel) right-hand threads in a range of materials, with strength in carbon steel and alloy steel. NPTF thread, also called Dryseal American National Standard Taper Pipe Thread, is an ANSI-standard thread configuration designed for a leak-free tapered pipe joint that is created by an interference fit between engaged threads rather than by the use of sealants. The straight flutes are suitable for threading through holes (extending through the workpiece) and blind or bottoming holes (with only one opening). Interrupted thread, caused by the removal of every other tooth except the first few chamfer threads, permits a larger supply of lubrication to reach the cutting teeth and assists with chip disposal.

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 Union Butterfield 1567(NPTF) series, all taps have five flutes and semi-bottoming chamfers. This tap conforms to ANSI standards and is suitable for normal pipe thread tolerance.

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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