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Union Butterfield 1568(NPT) High-Speed Steel Pipe Tap, Interrupted Thread, Uncoated (Bright) Finish, Round Shank with Square End

Available in multiple versions

1 customer review

Price: $27.16 - $353.25
Product Specifications
Brand Name Union Butterfield
Material Type High Speed Steel
Finish Types Uncoated (Bright)
Chamfer Type Pipe Tap
Manufacturer Series Number 1568(NPT)
Shank Type Round With Square End
Thread Style NPT
Tolerance Held 6H
UNSPSC Code 31201519

The Union Butterfield 1568(NPT) uncoated, high-speed steel pipe tap has straight flutes, inter... Read full product description

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1"-11.5 B003JY64LI
1-1/2"-11.5 B003JY64FY
1-1/4"-11.5 B003JY64GS
1/2"-14 B003JY64HW
1/4"-18 B003JY64J0
1/8"-27 B003JY64JU
1/8"-27 B003JY64KO
2"-11.5 B003JY64MC
3/4"-14 B003JY64N6
3/8"-18 B003JY64OU
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Product Features

  • Pipe tap cuts threads in pipes and pipe fittings
  • NPT (National Pipe Taper) threads for tapered pipe threading
  • Straight flutes to cut threads in through holes and blind holes
  • Interrupted thread for greater flow of lubrication and better chip disposal than continuous thread
  • Round shank with square end helps to minimize rotation in the tool holder

Product Details

  • Shipping Information: View shipping rates and policies
  • Domestic Shipping: Item can be shipped within U.S.
  • International Shipping: This item is not eligible for international shipping. Learn More
  • ASIN: B004J4VUSE
  • Average Customer Review: 3.0 out of 5 stars  See all reviews (1 customer review)
  • Manufacturer’s warranty can be requested from customer service. Click here to make a request to customer service.

Product Description

The Union Butterfield 1568(NPT) uncoated, high-speed steel pipe tap has straight flutes, interrupted threads, and a round shank with a square end, and is used to create NPT (National Pipe Taper) right-hand threads in a range of materials, with strength in carbon steel and alloy steel. NPT thread is an ANSI-standard thread configuration to be used with a sealant to create a leak-free tapered pipe joint. The straight flutes are suitable for threading through holes (extending through the workpiece) and blind or bottoming holes (with only one opening). Interrupted thread allows 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 1568(NPT) series, taps with nominal diameters of 1/8” to 1 1/4” have five flutes, and taps with nominal diameters of 1 1/2” and 2” have seven flutes. In this series, all taps have 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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Most Helpful Customer Reviews

Size: 3/8"-18 Verified Purchase
The tap I received was not the one pictured: mine had an section of reduced diameter shank approximately 10mm long, and the rest of the shank (up to the square drive part) was a large diameter shank, equal in diameter to the cutting part of the tool. This makes it impossible to tap deep holes which is why I got it. So for me its no good - may be OK for your intended use.
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