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by Dormer

Dormer E547 High-Speed Steel Pipe Tap Set, BSPP, Uncoated (Bright) Finish, Round Shank with Square End, 2-Piece (1 Plug and 1 Bottoming Chamfer)

Available in multiple versions

Price: $45.84 - $147.25
Product Specifications
Brand Name Dormer
Material Type High Speed Steel
Finish Types Uncoated (Bright)
Chamfer Type Multiple
Manufacturer Series Number E547
Number of Flutes 4
Shank Type Round With Square End
Thread Style BSPP
Tolerance Held 6H
UNSPSC Code 31201519

The Precision Twist E547 is a BSPP thread, machine tap made of HSS with a bright finish. It ca... Read full product description

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Size Part Number
The Amazon Standard Item Number (ASIN) uniquely identifies the item in the Amazon catalog.
Price Quantity
1/2"-14 B003JY707A
1/4"-19 B003JY709I
1/8"-28 B003JY70BQ
3/4"-14 B003JY70H0
3/8"-19 B003JY70J8
5/8"-14 B003JY70LG
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Product Features

  • British Standard Pipe Parallel Thread (BSPP) machine tap, to create BSPP standard threads
  • Used in through or blind holes
  • Straight flute, parallel internal thread, for creating right-hand threads
  • Uncoated (bright), economical and useful with a wide range of materials
  • High-speed steel (HSS), for use on a wide variety of materials

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: B004J4VU0M
  • Manufacturer’s warranty can be requested from customer service. Click here to make a request to customer service.

Product Description

The Precision Twist E547 is a BSPP thread, machine tap made of HSS with a bright finish. It can create threads at a depth of one and one-half times its diameter. It conforms to ISO 2284 standards. Good for tapping a wide range of metals or synthetic materials.

To create a blind, also called bottoming, hole (a hole that does not go completely through the material), use the plug tap to start the hole. The greater chamfer allows for easier starting, and to maintain correct perpendicular alignment with the work piece, use the bottoming tap to create the last threads in the hole. For a through hole, you only need the plug tap. Right-hand thread means that a right-hand or clock-wise rotation to tighten it.

A tap is a cutting tool used to create screw threads, which is called tapping. A tap cuts a thread on the inside surface of a hole, creating a female surface which functions like a nut.

Precision manufactures machine tools under the following brands: Precision Twist, Precision Dormer, and Union Butterfield. They have locations around the world, and provide tools adhering to ANSI, NAS, and DIN standards.

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