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Simonds 10 inch round bastard-cut file with black oxide finish

Simonds

Simonds 78400600 Round File 10 in Bastard Cut tool storage

SKU CH-MT8X-YVRCP

Round file cuts aluminum, brass, bronze, steel and tin with a 10 in bastard-cut profile

  • 10-inch round file reaches tight radii
  • Bastard cut with 20 teeth per inch removes material quickly
  • Double-cut faces and edges suit aluminum, brass, bronze, steel and tin
  • Tapered point guides into holes and contours
  • Black oxide finish resists corrosion during storage

Simonds 10 in Bastard-Cut Round File

This American-pattern machinist file is designed for shaping and enlarging circular openings in aluminium, brass, bronze, steel and tin. The 10-inch rigid body tapers toward the point for controlled material removal. Its black-oxide finish resists corrosion during workshop use. The tool arrives in a protective box ready for storage.

Capacity and headroom for filing tasks

Double-cut faces and edges with 20 teeth per inch deliver aggressive stock removal on the listed metals. The 3/8-inch diameter profile reaches into holes and curved surfaces that flat files cannot access. Four cutting edges maintain consistent contact around the workpiece. Coarseness limits fine finishing, so a second-cut or smooth file is needed for final surface preparation.

Fit into a workshop setup

The compact 10-inch length stores easily in tool chests or wall-mounted racks without demanding dedicated drawer space. Rigid construction allows two-handed pressure without flex, freeing the user to focus on stroke accuracy. No handle is included, so a separate tang-compatible grip must be sourced for comfort and control. The box container keeps the file segregated from other tools to preserve tooth sharpness.

Highlights

  • 10-inch round file reaches tight radii
  • Bastard cut with 20 teeth per inch removes material quickly
  • Double-cut faces and edges suit aluminum, brass, bronze, steel and tin
  • Tapered point guides into holes and contours
  • Black oxide finish resists corrosion during storage

Specifications

BrandSIMONDS

Questions about this item

Will the 10 in bastard-cut round file fit in my existing tool chest?

The file measures 10 in overall with a 3/8 in diameter, so it fits most standard machinist chests and roll cabinets.

How do I know the 20 teeth-per-inch double-cut face is performing correctly?

A clean, chatter-free cut on steel or brass with steady pressure shows the double-cut teeth are engaging properly.

Does the 78400600 come with a handle or must I buy one separately?

The box contains only the black-oxide file body; a tang handle is not included and must be purchased separately.

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