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Brush Research CHA4M400BC Chamfer FLEX-HONE®, 0.157' (4mm) Diameter, 0.005'-0.015' Chamfer, 400 Grit, Boron Carbide Abrasive (Pack of 1)

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$42.45

$ 21 .99 $21.99

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About this item

  • [QUALITY]- Proudly Made in the USA. The FLEX-HONE is long lasting, lowering total cost of use compared to other brush options.
  • [BENEFITS]- The FLEX-HONE for Chamfer Blending blends and radiuses sharp edges and removes microburrs on chamfered holes eliminating stress risers caused by the chamfering operation.
  • [STYLE]- Designed for 0.005"-0.015" Chamfer Size Range.
  • [MATERIALS]- Excellent on medium to high carbon steels and heat-treated steels to 50 Rc. It is also useful in titanium.


Brush Research’s Chamfer FLEX-HONE® Tools utilize BRM’s FLEX-HONE® technology in a unique design for blending and radiusing the outer corners (the intersection of the chamfer and flange face) and the inner corners and hole. The increased flexibility allows the tool to pass through thin web sections and polish the chamfer on the back side as well. Polished and radiused chamfer surfaces have been shown to be very beneficial on critical rotating parts and removes stress risers caused by the chamfering operation. The tools come in a variety of grit sizes and abrasive types and are suitable for finishing titanium, Inconel and nickel based stainless steel alloys. The tool eliminates hand finishing operations and produces consistent finishes from hole to hole, part to part.