Click for larger image and other views Image is representative of the product family. Select individual products in the table below for more specific images and product specifications

How can we improve our images or Product Specifications?

Union Butterfield 1580(UNC)/1580(UNF) High-Speed Steel Thread Forming Tap, Uncoated (Bright) Finish, Round Shank with Square End

Be the first to review this item

Product Specifications
Surface Coating
Uncoated (Bright)
Shank Type
Round With Square End
Material Type
High Speed Steel
UNSPSC Code
27112806
Brand Name
Union Butterfield

This item is no longer available

These items ship for FREE with 2-Day Shipping on orders over $50. (Details)

Want it delivered on Wed, Jul 30? Order in-stock items in the next 7 hrs 12 mins and choose One-Day Shipping at checkout.

  • Share
Currently showing 1-20 of 74 Next 20 »
Thread Size Thread Type Manufacturer Series # Chamfer Type Shank Diameter Length of Threads Overall Length Pitch Diameter Limit Mfr Part # ASIN

The Amazon Standard Item Number (ASIN) uniquely identifies
the item in the AmazonSupply.com (and Amazon) catalog.

Available

If an item is currently out of stock, but has an estimated lead time, you can place an order now and we will ship it as soon as it is available.
You can also order more than we currently have in stock.
Read more about back orders in our help section.

Price  
All All All All All All All All All      
Currently showing 1-20 of 74 Next 20 »
#0-80 UNF 1580(UNF) Bottoming 0.141" 0.3125" 1.625" H2 1310001 B003JY66FW 2 $20.29 Buy Options
#1-64 UNC 1580(UNC) Bottoming 0.141" 0.375" 1.6875" H2 1310002 B003JY65UI 2 $20.09 Buy Options
#1-72 UNF 1580(UNF) Bottoming 0.141" 0.375" 1.6875" H2 1310003 B003JY66QG Usually ships in 2 to 4 weeks $20.62 Buy Options
#2-56 UNC 1580(UNC) Bottoming 0.141" 0.4375" 1.75" H3 1310005 B003JY65W6 2 $20.65 Buy Options
#2-56 UNC 1580(UNC) Bottoming 0.141" 0.4375" 1.75" H2 1310004 B003JY65V2 2 $20.58 Buy Options
#2-64 UNF 1580(UNF) Bottoming 0.141" 0.4375" 1.75" H3 1310007 B003JY66S4 1 $19.45 Buy Options
#2-64 UNF 1580(UNF) Bottoming 0.141" 0.4375" 1.75" H2 1310006 B003JY66RA 2 $20.49 Buy Options
#3-48 UNC 1580(UNC) Bottoming 0.141" 0.5" 1.8125" H3 1310009 B003JY65YO 1 $19.45 Buy Options
#3-48 UNC 1580(UNC) Bottoming 0.141" 0.5" 1.8125" H2 1310008 B003JY65XU 6 $20.20 Buy Options
#3-56 UNF 1580(UNF) Bottoming 0.141" 0.5" 1.8125" H3 1310011 B003JY66W0 3 $20.49 Buy Options
#4-40 UNC 1580(UNC) Plug 0.141" 0.5625" 1.875" H5 1310013 B003JY660C 1 $18.66 Buy Options
#4-40 UNC 1580(UNC) Plug 0.141" 0.5625" 1.875" H3 1310012 B003JY65YY Usually ships in 2 to 4 weeks $19.52 Buy Options
#4-40 UNC 1580(UNC) Bottoming 0.141" 0.5625" 1.875" H5 1310015 B003JY660M 1 $18.66 Buy Options
#4-40 UNC 1580(UNC) Bottoming 0.141" 0.5625" 1.875" H3 1310014 B003JY65Z8 2 $19.40 Buy Options
#4-48 UNF 1580(UNF) Plug 0.141" 0.5625" 1.875" H3 1310016 B003JY66WU 1 $18.67 Buy Options
#4-48 UNF 1580(UNF) Bottoming 0.141" 0.5625" 1.875" H3 1310018 B003JY66XY 2 $19.67 Buy Options
#5-40 UNC 1580(UNC) Plug 0.141" 0.625" 1.9375" H5 1310021 B003JY6652 1 $18.66 Buy Options
#5-40 UNC 1580(UNC) Plug 0.141" 0.625" 1.9375" H3 1310020 B003JY663O 1 $18.66 Buy Options
#5-40 UNC 1580(UNC) Bottoming 0.141" 0.625" 1.9375" H5 1310023 B003JY665W 1 $18.66 Buy Options
#5-40 UNC 1580(UNC) Bottoming 0.141" 0.625" 1.9375" H3 1310022 B003JY664I 1 $18.66 Buy Options

Key Features

  • Cold-forms threads in through holes and blind holes without producing chips
  • Spiral forming lobe pattern for reducing tapping torque
  • High-speed steel for compatibility with a variety of materials
  • Available in UNC (Unified Coarse) or UNF (Unified Fine) right-hand thread options for different applications
  • Round shank with square end helps to minimize rotation in the tool holder

Product Description

The Union Butterfield 1580(UNC)/1580(UNF) uncoated, high-speed steel thread forming tap has a round shank with a square end and is used for cold-forming right-hand threads in ductile materials such as aluminum, brass, bronze, low-carbon steel, and leaded steel. It is available in two different ANSI thread specification standards: UNC (Unified Coarse) and UNF (Unified Fine). It is suitable for threading through holes (extending through the workpiece) and blind or bottoming holes (with only one opening). The Rol-Rite design reduces tapping torque. The spiral lobe pattern with no grooves makes this design especially suitable for interrupted holes and for through holes in thin sections.

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 square end shank helps to minimize rotation in the tool holder. This thread forming tap can be used in machines such as drill presses or lathes.

Union Butterfield 1580 taps are available with a variety of chamfers. This tap conforms to ANSI standards and can create threads to a depth 2 ½ times its diameter. Taps in this series are suitable for ANSI 2B and 3B tolerance classes: 2B is an average quality fit for commercial and industrial fasteners; 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.

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.

How can we improve our Product Description?

Customer Reviews

There are no customer reviews yet.

Be the first to review this item

Go to the HomePage

Order by Phone
M-F 8am-8pm ET, Sat-Sun 8am-5pm ET 800-220-4242

Become an Associate| Careers| About Us| Contact Us| Conditions of Use| Privacy Notice| Website Feedback | Returns

Follow Us 

© 2014 Amazon.com, Inc. and its affiliates.