Family · HS/RT
Reamers
Machine, parallel, spiral, taper, and shell. 26 tools in current production, ⌀3 through ⌀50.
- Tolerance
- H7 & bespoke
- Material
- HSS-Co5 / carbide
- Hardness
- 66 HRC
- Stock
- 48-hour ship
Part HS/RT-048 · ISO 9001:2015 · CE
Reamers & tapstolerance to ±0.003mm.
A fifth-generation toolmaker in Sheffield. Sixty-four reamers and taps in current production, cut on four-axis grinders, hardened in the same building, sold to machinists in twenty-three countries.
01 / Specification
Tolerance table
Every tool leaves the works with its own inspection sheet. Below — the house tolerance, by nominal diameter, for the HS/RT-048 reamer family.
| Nominal ⌀ | Tolerance | Shank | OAL | Test |
|---|---|---|---|---|
| ⌀ 06.00 H7 | +0.012 / 0 | ⌀ 06.00 | 93.0 mm | Passed |
| ⌀ 08.00 H7 | +0.015 / 0 | ⌀ 08.00 | 117.0 mm | Passed |
| ⌀ 10.00 H7 | +0.015 / 0 | ⌀ 10.00 | 133.0 mm | Passed |
| ⌀ 12.00 H7 | +0.018 / 0 | ⌀ 12.00 | 151.0 mm | Passed |
| ⌀ 16.00 H7 | +0.018 / 0 | ⌀ 16.00 | 175.0 mm | Passed |
| ⌀ 20.00 H7 | +0.021 / 0 | ⌀ 20.00 | 199.0 mm | Passed |
“Our measurable promise: we are within 0.003mm of the nominal, at 20°C, on the day the tool ships. Every tool, no exceptions.”David Harrow, MD · fifth-generation owner
All tools are inspected on a Zeiss Contura G2 before shipping. Inspection certificates travel with the tool; a scanned copy lands in your inbox the day before the crate arrives. If the cert doesn't match your QC, we replace the tool, no questions.
02 / The range
Three tool families.
Reamers, taps and form tools — three families, sixty-four tools, all produced on the same six grinders in the same Sheffield works. Stock items ship in 48 hours; bespoke, four weeks.
Family · HS/TP
Taps
Hand, machine, spiral-point, spiral-flute and forming taps for ISO metric and UNF threads. 22 tools in production.
- Threads
- M2.5 → M36
- Class
- 6H / 6g
- Material
- HSS-E / PM
- Coating
- TiN / TiAlN
Family · HS/FT
Form tools
Button form, flat form and circular form tools cut to your drawing. Sixteen stock profiles, bespoke from a dimensioned PDF.
- Profile
- From drawing
- Material
- HSS-Co8 / carbide
- Lead-time
- 4 weeks
- MOQ
- One tool
03 / Distributors
Where to buy.
Twenty-eight industrial distributors in the UK, twelve in Europe, five in North America. Search by postcode; we'll show you the nearest three and their stock position.
04 / Request a quote
Bespoke or bulk?
Bespoke quotes typically within two working days. Send a drawing, a part number, or describe the job — we'll work it out.
What to include
The more you can tell us up-front, the faster we can quote. At minimum, we need the nominal and your tolerance.
- Nominal diameter, length and tolerance
- Material you're cutting (grade & condition)
- Shank type (straight, Morse, bespoke)
- Expected batch size
- Any drawing (.pdf, .dwg or .step) attached separately
- Delivery address for freight quote