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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.

How it compares

Measured against everything we stock in Tool Bags & Storage Cases, at today’s prices. Recalculated every night.

Price $6.99
Cheaper than about 93% of the 2,748 comparable items (median $20.99).

Specifications

Product
Brand nameSIMONDS

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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