RS PRO 3 ⭢ 12mm x 175 mm HSS Hand Reamer

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Technical Reference

Legislation and Compliance

RoHS Status: Not Applicable

Statement of Conformity

RS Components
Statement of Conformity

This statement confirms that the product detailed below complies with the specifications currently published in the RS media and has been subject to the strict quality conditions imposed by RS Components’ internal management systems. Furthermore and where applicable, it confirms that all relevant semiconductor devices have been handled and packed under conditions that meet the administrative and technical requirements of ANSI/ESD S20.20 and EN61340-5-1 electrostatics control standards.

Compliant Product Details
RS stock number 0456917
Product description RS PRO 3 ⭢ 12mm x 175 mm HSS Hand Reamer
Manufacturer / Brand RS PRO

The foregoing information relates to product sold on, or after, the date shown below.


Date Jun 18, 2024

RS Components Pte Ltd Robinson Road, P.O. Box 1582, Singapore 903132

Country of Origin: CN

Product Details

RS PRO HSS Tapered Hand Reamer

Introducing the RS PRO range of HSS tapered Hand Reamers. The high-quality engineering hand tools are essential when cleaning burrs from a drilled hole, or to make a hole bigger. The RS PRO range has two different sizes of tapered hand reamers:

• 8 step flutes
• The diameter of the top/bottom of the reamer head is 9.8mm/25.10mm
• Twist angle for the top/bottom of the individual flute is 80 degrees
• The overall length of the reamer head is 122mm (shaft excluded)
• Overall tool length is 235mm
• Connection shank size is 8mm (hexagon shank)

• 6 step flutes
• The diameter of the top/bottom of the reamer head is 0.20mm/12.10mm
• Twist angle for the top/bottom of the individual flute is 70 degrees
• The overall length of the reamer head is 85mm (shaft excluded)
• Overall tool length is 190mm
• Connection shank size is 6mm (hexagon shank)

Features and Benefits:

• The RS PRO hand reamers range are made from heat-treated HSS (High-Speed Steel) for ultra-durability, hardness and premium cutting performance and taper to a narrow point for easy entry into the drilled hole
• Chemically blackened finish for corrosion resistance
• Suitable for use with most ferrous and non-ferrous metals


Reaming is a mechanical process that can aid in creating precision holes and is mainly used after the hole has been drilled using a drill bit. Because of this, reamers need to be very strong and have a high tolerance to ensure that the end result is a smooth-cut hole with no sharp internal surfaces. Reamers can be used by hand or machine and are often used in:
• Metalworking industry
• Engineering production
• Automotive and aircraft industries

How does a reamer differ from a drill bit?

A reamer is stiffer and offers a higher tolerance than a drill bit. They are generally made from HSS which means that the reamer also retains much more of its strength and durability even at high temperatures. A reamer also generally comes in pre-determined sizes, just like a drill bit does, but unlike a drill bit, it cannot start a hole, which is the primary function of a drill bit. A drill bit is normally used as the first step in making a hole and a reamer is normally the last step to ensure a clean, burr-free finish with no sharp edges and to ensure the hole is at the correct size.


Attribute Value
Brand RS PRO
Flute Type Tapered
Diameter 3 ⭢ 12 mm
Material HSS
Overall Length 175 mm
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