Micro shaft, Ø3 h5
Semiconductor handling
Sub-4 mm stainless shafts for wafer-handling arms. Ground and polished, straightness held under 3 µm over 60 mm.
- Material
- 1.4305 / 303
- Tolerance
- h5 · ±0.003
- Finish
- Ra 0.10 polished
- Volume
- 40 k / year
01 Contract precision manufacturing est. 1998
Tolerance is a promise.
We machine the parts other suppliers quote and then quietly decline — thin walls, deep bores, mirror finishes — and we hold them at ±0.002 mm across ten thousand units.
- Best tolerance
- ±2 µm
- Surface finish
- Ra 0.05
- On-time delivery
- 99.4 %
ISO 9001 · IATF 16949 · ISO 13485
02
Our standard
A drawing is a contract written in numbers. Most factories treat the tolerance band as room to move; we treat it as the edge of a cliff. Every part we ship is measured against the datum it was designed from — not against the last part that passed. That is the whole discipline, and it is not complicated. It is only expensive to ignore.
Held to a tenth
03 Process capability
±0.100mm
Achievable band, narrowing through the process chain
-
01
Turning & milling
Swiss-type lathes with live tooling and 5-axis centres. Roughed and finished in one clamping, so the datum never moves.
±0.010 mm -
02
Grinding & honing
Centreless and jig grinding in a 20 ± 0.5 °C hall. Parts rest twelve hours before the finishing pass; steel remembers heat.
±0.004 mm -
03
Lapping & verification
Hand lapping to Ra 0.05, then full CMM and optical inspection against the model. Every report ships with the box.
±0.002 mm
Components
04 Four programmes currently in series production. Drawings and materials shown are representative.
4/4 components
No component matches — try a material, a tolerance band or a finish.
Optics housing
Metrology instruments
Thin-wall 6061 housing, 0.8 mm ribs, hard anodised. Bore concentricity to the mounting face within 5 µm after coating.
- Material
- AL 6061-T6
- Tolerance
- ±0.008
- Finish
- Type III anodise
- Volume
- 12 k / year
Sensor body, brass
Industrial automation
Single-clamping turned body with a sealed thread form. Leak tested at 6 bar, 100 % of parts, before the finish pass.
- Material
- CuZn39Pb3
- Tolerance
- ±0.010
- Finish
- Vibratory, passivated
- Volume
- 180 k / year
Implant screw
Medical devices
Ti-6Al-4V ELI, machined and passivated under ISO 13485 with full lot traceability from bar certificate to shipment.
- Material
- Ti-6Al-4V ELI
- Tolerance
- ±0.005
- Finish
- Passivated, cleanroom
- Volume
- 25 k / year
The floor
05 11 000 m² across two halls in Suzhou. Machining, metrology and packing under one roof, one climate, one clock.
Materials
06 Stock & capability
MaterialProcessToleranceFinishLead
Stainless 316L / 303Swiss turning · grinding±0.003Ra 0.1018 d
Aluminium 6061 / 70755-axis milling · anodise±0.008Ra 0.4014 d
Titanium Ti-6Al-4V ELIMilling · passivation±0.005Ra 0.2022 d
Brass CuZn39Pb3Multi-spindle turning±0.010Ra 0.8012 d
Inconel 718Hard milling · EDM±0.006Ra 0.4028 d
PEEK / PPSTurning · dry machining±0.015Ra 0.8016 d
Quality
07 Audited annually by Aurantis Register. Certificates and current scope available on request.
ISO 9001:2015
Quality management
Whole site, machining and assembly.
Valid to 2029-03
IATF 16949
Automotive
Series production, PPAP level 3.
Valid to 2028-11
ISO 13485
Medical devices
Cleanroom cell, full traceability.
Valid to 2029-06
ISO 14001
Environmental
Coolant recovery, swarf reclaim.
Valid to 2028-09
Global
08 Customers & delivery- 00Countries shipped to
- 00On-time delivery, 2025
- 00Customer defect rate
- 000Parts shipped per month
SuzhouRotterdamSea · 26 d
SuzhouStuttgartRail · 19 d
SuzhouChicagoAir · 5 d
SuzhouOsakaSea · 6 d
They are the only supplier we stopped incoming-inspecting. Four years, not one deviation.
Head of Supply Quality — medical OEM, Baden-Württemberg
09 Send a drawing — STEP, IGES or a scan of a napkin
Quote in48 hours.
Start an enquiry
rfq@vernia-precision.com
NDA on request. First articles in ten working days. Drawings are reviewed by an engineer, never a form.