28mm Hand Reamer DIN 206 Form B H7 HSS Spiral Fluted Right-Hand Long Lead Cylindrical Shank - TECWERK

Take advantage of the combination of high-speed steel construction, H7 tolerance and spiral-fluted geometry for consistent hole finishing; secure procurement through Metav Werkzeuge or consult the specialists for application advice.

Hand reamer DIN 206 H7 Form B, 28 mm — HSS spiral-fluted (TECWERK)

The Hand reamer DIN 206 H7 Form B is a precision manual finishing tool for machining holes to H7 tolerance in metalworking and maintenance environments.

• High-speed steel construction HSS
• Tolerance H7 for precision fits
• Left-hand spiral flutes for chip evacuation
• Cylindrical shank with square end

Precise hole finishing for repeatable fits

Designed for manual deburring and fine-sizing operations, this hand tool delivers accurate H7 bores with minimal run-out. The combination of DIN 206 Form B geometry and HSS material ensures durable cutting edges while the 28 mm diameter provides a common size for press fits and bearing seats. The H7 tolerance denotes a tight shaft-to-hole allowance, which in practice means repeatable assembly fits and reduced rework; engineers unfamiliar with the standard can regard H7 as a guarantee of consistent hole diameter within defined limits.

Improved chip control and reliable cutting performance

The spiral-fluted design with a left-hand helix promotes effective chip evacuation when used in a hand-driven application, lowering the risk of clogging and scoring on the bore. The tool is uncoated, offering predictable cutting behaviour and ease of re-sharpening, while the pairing of a long cutting portion with a cylindrical shank and square end gives stability in manual holders and conventional chucks. These characteristics contribute to shorter cycle times and fewer touch-ups in production or workshop settings.

Built for workshop versatility and straightforward handling

As a hand-operated finishing tool, this reamer combines robust HSS construction with a practical shank form for simple integration into existing tooling setups. The designation right-cutting together with the left-hand spiral expresses the cutting geometry and helix direction used; this combination is selected to balance cutting action and chip flow for particular materials. For users working across a range of metals, the tool’s specification supports dependable finishing of ferrous components where a precise bore is essential.

Request this TECWERK hand reamer via Metav Werkzeuge for dependable H7 hole finishing or contact our consultants at Metav Werkzeuge for specification support and application guidance — info@metav-werkzeuge.com | +49 2822 7131930

Technical Data

• Article number: 2000865718NW
• UID: 2000865718NW
• Manufacturer: TECWERK
• Packaging unit: 1

Facts

• Diameter: 28 mm
• Tolerance: H7
• Standard: DIN 206
• Form: B

Special features

• Material: HSS
• Coating: uncoated
• Flute type: spiral-fluted (drallgenutet)
• Helix direction: left-hand spiral
• Cutting direction: right-cutting
• Shank: cylindrical shank with square end
• Cutting length: long cutting portion

FAQ

What size holes is this reamer intended for? The reamer is specified with a 28 mm diameter and is intended to finish holes to that nominal size, delivering a bore to the H7 tolerance standard.

Can this tool be used for different materials such as steel or aluminium? The TECWERK hand reamer is manufactured from HSS, making it suitable for a variety of common workshop metals; material-specific cutting parameters should be chosen to match hardness and machinability.

How does the spiral flute affect performance? The spiral-fluted geometry improves chip evacuation during manual reaming operations and reduces the chance of surface scoring, enhancing finish quality and tool life.

Is the reamer coated and is resharpening straightforward? This tool is uncoated, which simplifies resharpening and predictable cutting behaviour; professional resharpening restores geometry without dealing with coating removal.

Which standards and form does the tool comply with? The reamer is produced to DIN 206 Form B and specified for H7 tolerance, aligning with established industrial requirements for precision hole finishing.

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