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Union Butterfield 1500A(UNC)/1500A(UNF) High-Speed Steel Hand Tap, Black Oxide Finish, Round Shank with Square End, Plug Chamfer

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Product Specifications
Surface Coating
Steam Oxide
Shank Type
Round With Square End
Material Type
High Speed Steel
Number of Flutes
4
Brand Name
Union Butterfield

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Thread Size Thread Type Manufacturer Series # Chamfer Type Shank Diameter Length of Threads Overall Length Pitch Diameter Limit Mfr Part # ASIN

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Currently showing 1-19 of 19
1/4"-20 UNC 1500A(UNC) Plug 0.255" 1" 2.5" H3 1050006 B003JTIO3E 2 $7.26 Buy Options
1/4"-28 UNF 1500A(UNF) Bottoming 0.255" 1" 2.5" H3 1050021 B003JTIO84 1 $7.26 Buy Options
5/16"-18 UNC 1500A(UNC) Plug 0.318" 1.125" 2.7187" H3 1050028 B003JTIO52 1 $8.81 Buy Options
5/16"-24 UNF 1500A(UNF) Plug 0.318" 1.125" 2.7188" H3 1050039 B003JTIO9I 2 $8.81 Buy Options
3/8"-16 UNC 1500A(UNC) Plug 0.381" 1.25" 2.9375" H3 1050050 B003JTIO4I Temporarily out of stock. Order now and we'll deliver when available. $10.00 Buy Options
3/8"-24 UNF 1500A(UNF) Plug 0.381" 1.25" 2.9375" H3 1050061 B003JTIO8Y 1 $10.72 Buy Options
7/16"-14 UNC 1500A(UNC) Plug 0.323" 1.4375" 3.1563" H3 1050070 B003JTIO6G 1 $17.15 Buy Options
7/16"-20 UNF 1500A(UNF) Plug 0.323" 1.4375" 3.1563" H3 1050079 B003JTIOAM 1 $16.98 Buy Options
1/2"-13 UNC 1500A(UNC) Plug 0.367" 1.6563" 3.375" H3 1050088 B003JTIO34 3 $17.35 Buy Options
1/2"-20 UNF 1500A(UNF) Plug 0.367" 1.6563" 3.375" H3 1050097 B003JTIO7K 1 $19.10 Buy Options
9/16"-12 UNC 1500A(UNC) Plug 0.429" 1.6563" 3.5938" H3 1050106 B003JTIO7A 2 $23.02 Buy Options
9/16"-18 UNF 1500A(UNF) Plug 0.429" 1.6563" 3.5938" H3 1050113 B003JTIOCA 2 $23.90 Buy Options
5/8"-11 UNC 1500A(UNC) Plug 0.48" 1.8125" 3.8125" H3 1050121 B003JTIO5W 2 $25.44 Buy Options
5/8"-18 UNF 1500A(UNF) Plug 0.48" 1.8125" 3.8125" H3 1050128 B003JTIOA2 7 $25.83 Buy Options
3/4"-10 UNC 1500A(UNC) Plug 0.59" 2" 4.25" H3 1050142 B003JTIO3Y 1 $33.22 Buy Options
3/4"-16 UNF 1500A(UNF) Plug 0.59" 2" 4.25" H3 1050149 B003JTIO8O 1 $26.01 Buy Options
7/8"-9 UNC 1500A(UNC) Plug 0.697" 2.2188" 4.6875" H4 1050157 B003JTIO70 1 $40.55 Buy Options
7/8"-14 UNF 1500A(UNF) Plug 0.697" 2.2188" 4.6875" H4 1050163 B003JTIOB6 1 $40.55 Buy Options
1"-8 UNC 1500A(UNC) Plug 0.8" 2.5" 5.125" H4 1050170 B003JTIO3O 4 $57.41 Buy Options

Key Features

  • Hand threading tap with straight flutes cuts threads in through holes and blind holes
  • Black oxide finish improves lubricity, resists corrosion, and helps prevent buildup
  • Available in UNC (Unified Coarse) or UNF (Unified Fine) right-hand thread options for different applications
  • High-speed steel is compatible with a variety of materials
  • Round shank with square end allows tap to be used in hand or power-driven applications

Product Description

The Union Butterfield 1500A(UNC)/1500A(UNF) high-speed steel hand threading tap has straight flutes, a round shank with a square end, and a black oxide surface finish, and is used to create right-hand threads in a range of materials. It is available in two different ANSI thread specification standards: UNC (Unified Coarse) or UNF (Unified Fine). The straight flutes are suitable for threading through holes (extending through the workpiece) and blind or bottoming holes (with only one opening). The black oxide finish of this tool will not chip, improves lubricity, resists corrosion, and helps to prevent buildup and welding on the cutting edge of the tool.

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. The round shank with square end makes this tap 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 1500A(UNC) and 1500A(UNF) series, all taps have four flutes. They 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 3B tolerance class: 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.

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