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  • Union Butterfield 1700(M) High-Speed Steel Hand Tap, Uncoated (Bright) Finish, Round Shank with Square End
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Union Butterfield 1700(M) High-Speed Steel Hand Tap, Uncoated (Bright) Finish, Round Shank with Square End

Available in multiple versions


Price: $4.55 - $219.72
Product Specifications
Brand Name Union Butterfield
Material Type High Speed Steel
Finish Types Uncoated (Bright)
Manufacturer Series Number 1700(M)
Shank Type Round With Square End
Thread Style Metric
UNSPSC Code 27112806

The Union Butterfield 1700(M) uncoated, high-speed steel hand threading tap has straight flute... Read full product description


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M1.6-0.35 B003JY6EIQ
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M11-1.5 B003JY6ET0
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M12-1.25 B003JY6EVS
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M12-1.25 B003JY6EWC
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Product Features

  • Hand threading tap with straight flutes cuts threads in through holes and blind holes
  • Produces ANSI standard right-hand threads in metric sizes
  • High-speed steel is compatible with a variety of materials
  • Uncoated (bright) tools have no additional surface treatment or coating, for use on a broad range of materials
  • Round shank with square end allows tap to be used in hand or power-driven applications

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: B004J4VUZ2
  • Average Customer Review: 4.9 out of 5 stars  See all reviews (10 customer reviews)
  • Manufacturer’s warranty can be requested from customer service. Click here to make a request to customer service.

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Product Description

The Union Butterfield 1700(M) uncoated, high-speed steel hand threading tap has straight flutes and a round shank with a square end, and is used to create metric right-hand threads in a range of materials. The straight flutes are suitable for threading through holes (extending through the workpiece) and blind or bottoming holes (with only one opening).

Right-hand threads are designed to tighten when the 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 makes it suitable for hand or power-driven applications. 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 1700(M) series, taps with nominal diameters of 1.6 mm and 1.8 mm have two flutes, those with nominal diameters of 2 mm to 3.5 mm have three flutes, and those with nominal diameters of 4 mm to 36 mm have four flutes. Taps in this series are available with a variety of chamfers. This tap conforms to ANSI standards and can create threads to a depth 1 ½ times its diameter. It is suitable for the ANSI 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 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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Customer Reviews

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Most Helpful Customer Reviews

2 of 2 people found the following review helpful By Amazon Customer on June 24, 2013
Size: M12-1.25 Verified Purchase
I used this tap to install a trailer hitch on a 9-year-old 2004 Toyota Sienna. I spent more time than I'm willing to admit to in public with liquid wrench, wire bushes, and a real wrench trying to get the threads cleared. I ordered this tap, and was able to clear all 6 holes in just a few minutes. This tapered tap found the threads under the corrosion with only a little bit of gentle finagling. I have a sliding-bar tap wrench, and was able to turn it with one hand in a confined space using one hand. If I'd had a proper tap like this one when I started, I could have saved myself a lot of time and frustration.
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2 of 2 people found the following review helpful By Joe Evans on December 18, 2012
Size: M5-0.8 Verified Purchase
Someone recommended I get this tap, after destroying a few other cheap ones on my project. This one taps the metal extremely easily -- definitely recommend this over a cheap one.
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1 of 1 people found the following review helpful By James Howard on July 30, 2012
Size: M5-0.8 Verified Purchase
This is one of the easiest tap I have ever used. Goes thru like butter. It does the trick and fast.
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1 of 1 people found the following review helpful By I. Peerbhai on January 18, 2012
Size: M5-0.8 Verified Purchase
I have a three-flute 5mm tap that I got from Tacoma screw that I use for tapping holes. I got this unit due to glowing reviews in the RepRap community. They were right -- this thing threads with less force and faster than my existing tap. It goes in straighter, and I don't feel the need to correct the hole path as I do with my other tap. I use it to thread Misumi 2020/2040 Aluminum rails, and it works a champ.
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1 of 1 people found the following review helpful By Pointedstick on December 6, 2011
Size: M5-0.8 Verified Purchase
I bought this thing to tap the ends of some aluminum extrusions on the advice of someone who said that this particular tap was a cut above others and would greatly speed the task. I figured a tap is a tap is a tap, but I bought it anyway, and boy, am I glad I did! This tap really slices through the aluminum with a minimum of effort. I got the job done very quickly. Definitely a worthwhile addition to your toolbox.
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