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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)

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Product Specifications
Surface Coating
Uncoated (Bright)
Pitch Diameter Limit
6H
Material Type
High Speed Steel
Thread Type
BSPP
Chamfer Type
Multiple
Brand Name
Dormer
Manufacturer Series #
E547
Shank Type
Round With Square End
Number of Flutes
4
UNSPSC Code
31201519

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Thread Size Shank Diameter Length of Threads Overall Length Mfr Part # ASIN

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Currently showing 1-6 of 6
1/8"-28 8 mm 15 mm 59 mm 157183 B003JY70BQ yes $46.27 Buy Options
1/4"-19 10 mm 19 mm 67 mm 157213 B003JY709I yes $51.34 Buy Options
3/8"-19 12.5 mm 21 mm 75 mm 157244 B003JY70J8 yes $66.32 Buy Options
1/2"-14 16 mm 26 mm 87 mm 157275 B003JY707A yes $108.88 Buy Options
5/8"-14 18 mm 26 mm 91 mm 340684 B003JY70LG yes $142.27 Buy Options
3/4"-14 20 mm 28 mm 96 mm 160763 B003JY70H0 yes $151.49 Buy Options

Key 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 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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