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Alvord Polk 655-H High-Speed Steel Construction Reamer, Left Hand Spiral Flute, Taper Shank, Uncoated (Bright)

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Product Specifications
Cutting Direction
Right Hand
Finish Types
Uncoated (Bright)
Shank Type
Morse Taper
Material Type
High Speed Steel
UNSPSC Code
23241611
Brand Name
Alvord Polk
Flute Type
Left Hand Spiral

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Currently showing 1-11 of 11
3/8 " Inch 0.3750" 6-1/16" 3750 B002PHNFYO yes $30.64 Buy Options
7/16" Inch 0.4375" 6-5/16" 3751 B002PHNFYY yes $31.99 Buy Options
1/2 " Inch 0.5000" 7-9/16" 3752 B002PHNFZI yes $43.60 Buy Options
9/16" Inch 0.5625" 7-7/8" 3757 B002PHNG16 yes $47.68 Buy Options
5/8" Inch 0.6250" 8-3/16" 3753 B002PHNG02 yes $49.60 Buy Options
11/16" Inch 0.6875" 8-5/8" 3758 B002PHNG1G yes $57.83 Buy Options
3/4" Inch 0.7500" 8-5/8" 3754 B002PHNG0C yes $65.00 Buy Options
13/16" Inch 0.8125" 8-7/8" 3759 B002PHNG1Q yes $69.71 Buy Options
15/16" Inch 0.9375" 9-5/8" 3760 B002PHNG20 yes $79.46 Buy Options
1-1/8" Inch 1.1250" 9-5/8" 3762 B002PHNG2U yes $112.11 Buy Options
1-1/2" Inch 1.5000" 10-7/8" 3768 B002PHNG3O yes $214.23 Buy Options

Key Features

  • Left-hand spiral reamers are good for use in through holes (holes that extend all the way through a workpiece), as they push chips ahead of the tool and into the hole
  • Spiral reamers are recommended for reaming holes with interruptions, as they prevent damage to the workpiece edge and tool
  • The end of taper shank tools (held in a toolholder) is tapered to ensure accurate alignment of the tool in its socket and, in this case, is self-holding (friction between the tool and the tool-holder prevents slippage)
  • Uncoated (bright) tools have no finish or coating. They are a good choice for general purpose applications
  • High-speed steel is a common general purpose steel for cutting tools, is compatible with a variety of materials, and tends to be lower in price than cobalt steel or carbide

Product Description

The Alvord Polk 655-H left hand spiral flute construction reamer is a taper shank tool made of high-speed steel with no finish or coating, and is most commonly chosen for reaming interrupted cuts in structural steel. Construction reamers are tapered to allow the reamer to enter overlapping and misaligned holes where extremely precise tolerances are not necessary, and have a stop collar for safety and depth control.

Left-hand spiral reamers are useful for interrupted cuts and in through holes. Spiral reamers prevent whole flute contact with the leading edge in an interrupted cut, as in a keyway. This prevents damage to the interruption and reamer flute. Left-hand spiral style tools also push chips ahead of the tip of the tool, instead of pulling chips out of a hole. Left-hand spiral reamers are commonly used in through holes, since pushing chips into the hole can cause clogging, which may damage the tool. High-speed steel is a general purpose steel for cutting tools and is compatible with many metalworking materials. It is often lower in price than other cutting tool materials. Taper shank tools can be self-holding or self-releasing based on the degree of taper – small tapers are self-holding within the toolholder, while large tapers are self-releasing and will easily release from the toolholder. The end of Morse taper shank tools (held in a toolholder) is tapered to ensure accurate alignment of the tool in its socket and is self-holding (friction between the tool and the tool-holder prevents slippage). Morse taper is one of the most widely used standards for self-holding tapers.

There are five flutes for all reamers in this series. Tolerances are +0.005 -0.000 inches for all reamers in the 655-H series.

Reamers are used to finish existing holes. When holes are created using common applications like drilling or punching they often have minute imperfections. Their roundness may be flawed, or their diameter may be slightly smaller than required. Reamers are made to exacting tolerances, so they can correct such errors and create precisely round holes of exacting dimensions. Reaming is often used before tapping screw threads.

Alvord Polk manufactures a broad family of cutting tools, brushes, and tooling components, following ISO 9001 standards for quality and environmental impact of their products. Their offices and manufacturing facilities have been located in the United States since 1881.

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