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  • Union Butterfield 4500 High-Speed Steel Hand Reamer, Straight Flute, Round With Square End Shank, Uncoated (Bright)
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Union Butterfield 4500 High-Speed Steel Hand Reamer, Straight Flute, Round With Square End Shank, Uncoated (Bright)

Available in multiple versions

3 customer reviews

Price: $31.98 - $198.33
Product Specifications
Brand Name Precision Twist
Material Type High Speed Steel
Finish Types Uncoated (Bright)
Cutting Direction Right-Hand
Cutting Length 5.7/16  inches
Shank Type Round With Square End
UNSPSC Code 27112837

The Union Butterfield 4500 high-speed steel straight flute hand reamer is ... Read full product description



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Product Features

  • Straight flute reamer for general purpose reaming to make minor enlargements to existing holes with a precise size and roundness
  • Straight flute reamers are good for use in through or blind holes without interruptions such as keyways (through holes extend through the entire workpiece, while blind holes do not)
  • Square end shank fits into a tap wrench, adjustable hand wrench, or standard chuck and helps prevent rotation in the tool holder
  • High-speed steel is a common general-purpose steel for cutting tools and is compatible with a variety of materials
  • Uncoated (bright) tools have no additional surface treatment or coating, suitable for general-purpose applications

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: B003TO4VRM
  • Average Customer Review: 5.0 out of 5 stars  See all reviews (3 customer reviews)
  • Manufacturer’s warranty can be requested from customer service. Click here to make a request to customer service.

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Product Description

The Union Butterfield 4500 high-speed steel straight flute hand reamer is an uncoated (bright) round shank tool with a taper lead and a square end; it is commonly used for general-purpose hand reaming. Straight flute reamers are useful for uninterrupted cuts in general-purpose applications. They make small, circular, and precise enlargements to through holes (extending through the workpiece) and blind holes (with only one opening).

High-speed steel (HSS) is a general-purpose steel for cutting tools and is compatible with many metalworking materials. For alignment, a hand reamer has a relatively long taper lead (compared with a machine reamer, which has a 45-degree bevel lead) to allow the reamer to enter a hole and center itself. A round shank with a square end allows this reamer to be used with a tap wrench, an adjustable hand wrench, or standard tap or reamer chucks. The square end also prevents rotation in the tool holder.

In the Union Butterfield 4500 series, reamers 0.1250” to 0.5312” in diameter have six flutes, 0.5625” to 1.0000” in diameter have eight flutes, and 1.1250” to 1.5000” in diameter have 10 flutes. Tolerances for reamers that are 1/8” to 19/32” tolerances are +0.0001” to +0.0004”; for 5/8” to 1” they are +0.0001” to +0.0005”, and for 1-1/8” and larger they are +0.0002” to +0.0006”.

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

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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Most Helpful Customer Reviews

By MTJimbo on September 16, 2013
Size: 11/32"System of Measurement: Inch Verified Purchase
Union Butterfield cutting tools is one of the oldest and best brands in its category. The term, "hand reamer," however, should be taken under advisement. My goal was to smoothly enlarge the valve holes in aluminum bicycle rims, and I basically botched the job. Had I gone to the trouble of clamping the rims to a drill press table and followed the tap with a hard-center chucked in the quill, it would have worked perfectly. So I'd say, don't take shortcuts and these taps will never let you down.
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By John on September 15, 2013
Size: 1/2 inSystem of Measurement: Inch Verified Purchase
Just what I needed. I use it to hand craft wheel bushings from CPVC, no more expensive bushing material needed,
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By dustin on November 21, 2014
Size: 7/16"System of Measurement: Inch Verified Purchase
Great
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