Tools for Boring or Broaching (Base Metal)

Gun reamers (used in deep-hole boring, particularly for firearm barrels and hydraulic components) are specifically excluded from 8207600035 and classify under the NESOI boring tools provision (8207600060 or 8207600061). This exclusion reflects their specialized design — a long, single-flute or multi-flute tool with coolant-through capability — which CBP treats as distinct from conventional chucking or hand reamers.

Broaches (8207600030) are multi-tooth tools that remove material in a single linear pass to create a specific profile — such as a keyway or spline — and are not rotated during cutting. Reamers (8207600035) are rotary tools used to enlarge or finish an existing hole to a precise diameter. The distinction is based on the tool's operating principle and geometry, not just its name, so importers should provide technical drawings or manufacturer specifications when the classification is not obvious.