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Union Butterfield 1541(NPT) High-Speed Steel Pipe Tap, Medium Hook, Uncoated (Bright) Finish, Round Shank With Square End, 1-1/2"-11.5 Thread Size

4.0 out of 5 stars 1 customer review

List Price: $341.00
Price: $242.80 & FREE Shipping. Details
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1-1/2"-11.5 Thread Size
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  • Pipe tap cuts threads in pipes and pipe fittings
  • NPT (National Pipe Taper) threads for compatibility with a range of threads
  • Straight flutes to cut threads in through holes and blind holes
  • Medium hook for general-purpose pipe tapping
  • Round shank with square end helps to minimize rotation in the tool holder

Product Specifications
Part Number 15411.1/2X11.1/2
Number of Items 1
UPC 698464020162
Chamfer Type Pipe Tap
Cutting Direction Right-Hand
EAN 0698464020162
Finish Type Uncoated (Bright)
Length 4.25
Manufacturer Series Number 1541(NPT)
Measurement System Fractional Inch
Model Number 1010526
Number of Flutes 7
Shank Diameter 1.5
Shank Type Round With Square End
Size 1-1/2"-11.5 Thread Size
Thread Length 1.75
Thread Type NPT
Tolerance Held 6H
Specification for this product family
Brand Name Abbott Workholding
Material Steel 1018
UNSPSC Code 27112809


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$242.80 & FREE Shipping. Details Temporarily out of stock. Order now and we'll deliver when available. We'll e-mail you with an estimated delivery date as soon as we have more information. Your account will only be charged when we ship the item. Ships from and sold by Amazon.com.

Product description

Size:1-1/2"-11.5 Thread Size

The Union Butterfield 1541(NPT) uncoated, high-speed steel pipe tap has straight flutes with medium hook 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 designed 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). Designed for average conditions, this tap has a medium hook, or rake angle, that is suitable for general-purpose pipe tapping.

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 1541(NPT) series, taps with nominal diameters of 1/16” to 1/2” have four flutes, taps with nominal diameters of 3/4” 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.

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.


Product details

Size: 1-1/2"-11.5 Thread Size
  • Shipping Weight: 2.2 pounds (View shipping rates and policies)
  • Domestic Shipping: Item can be shipped within U.S.
  • International Shipping: This item can be shipped to select countries outside of the U.S. Learn More
  • ASIN: B003JY62N8
  • Item model number: 1010526
  • Average Customer Review: 4.0 out of 5 stars 1 customer review
  • Amazon Best Sellers Rank:
  • Manufacturer’s warranty can be requested from customer service. Click here to make a request to customer service.

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on August 14, 2017
Size: 1/8"-27 Thread Size, 5/16" Shank Dia|Verified Purchase
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