20mm Hand Reamer DIN 206 H7 Form B Spiral Fluted HSS Uncoated, Right-Hand Long Cut - TECWERK

Take advantage of the combination of HSS construction, a DIN 206 Form B profile and a guaranteed H7 tolerance to achieve consistently tight-fitting holes with minimal rework; order the reamer through Metav Werkzeuge or consult our technical advisers for application advice.

Hand Reamer DIN 206 H7 Form B, 20 mm — TECWERK

Hand Reamer DIN 206 H7 Form B, 20 mm is a precision manual finishing tool designed to bring bore diameters to accurate tolerances in general engineering and toolroom applications.

• HSS for long tool life
• DIN 206 Form B profile
• Tolerance H7 for precision
• Cylindrical shank with square end

Accurate finishes that reduce assembly adjustments

The H7 tolerance rating guarantees a consistent fit class that simplifies assembly and reduces the need for trial fits. Thanks to the DIN standard DIN 206, the reamer provides predictable geometry across production batches, allowing reliable interchangeability. This directly reduces downtime associated with corrective machining and streamlines quality control processes, as operators can expect reproducible results without extensive measurement iterations.

Robust HSS construction for workshop longevity

Constructed from HSS, the tool combines toughness with wear resistance, making it suitable for repeated manual reaming and routine resharpening. The high-speed steel composition enables controlled cutting action and a reasonable service life under normal workshop conditions; when edges blunt, the cutting profile can be refreshed by a competent sharpening service, extending the working life and improving total cost of ownership.

Spiral-fluted design for cleaner chip control

The spiral-fluted geometry promotes efficient chip evacuation and produces a finer surface finish compared with straight-fluted equivalents. Together with the long chamfer, the flute form eases entry into the workpiece and reduces the risk of chatter at start-up, delivering a smoother bore and less manual deburring. For operations where surface quality and concentricity matter, the spiral flute helps maintain dimensional integrity across the hole length.

Practical shank and handling for hand operation

The Form B layout is optimised for hand use and workshop versatility; the cylindrical shank with a square end permits secure clamping in a collet or fastening in a tap wrench, offering stable control during feeding. The long lead-in facilitates gentle engagement with the bore, reducing the likelihood of initial scoring. These handling features support safer, more consistent manual finishing in both small-batch production and maintenance tasks.

For precise manual finishing with TECWERK quality, request stock information from Metav Werkzeuge or contact our technical advisers in Emmerich for delivery options and application guidance.

Technical data

• Article number: 2000865713NW
• Item designation: Hand Reamer DIN 206 H7 Form B, 20 mm
• UID: 2000865713NW

Core data

• Diameter: 20 mm
• Tolerance: H7
• Material: HSS
• Standard: DIN 206
• Flute: spiral-fluted
• Coating: uncoated

Special features

• Form B (hand reamer design)
• Long chamfer (langer Anschnitt)
• Cylindrical shank with square end
• Suitable for finishing and achieving precise fits

FAQ

What materials is this reamer suitable for?
The TECWERK hand reamer is made from HSS and is suitable for standard engineering materials where HSS is appropriate; material-specific suitability depends on hardness and machining parameters.

How does the H7 tolerance affect assembly?
A bore finished to H7 with this reamer provides a predictable clearance class that simplifies mating part selection and reduces assembly adjustments.

Can the reamer be resharpened?
Yes, the HSS construction allows professional resharpening to restore cutting edges and extend service life when the tool becomes dull.

Is the spiral-fluted geometry better for chip evacuation than straight flutes?
The spiral-fluted design promotes improved chip evacuation and helps produce a better surface finish compared with straight-fluted reamers, particularly in through-holes and longer bores.

What does Form B indicate for this tool?
Form B denotes the standard hand reamer configuration under DIN 206, designed for manual finishing tasks with stable clamping and controlled feed.

Manufacturer/Responsible: NORDWEST Handel AG, Robert‑Schuman‑Straße 17, 44263 Dortmund