Automotive
Tight Tolerance Machining for the Automotive Industry
Looking for a reliable source of tight Tolerance Machining? Precision Machining India manufactures to your drawing at our ISO 9001:2015 certified plant in Pune, India, and supplies OEMs and procurement teams worldwide.
ISO 9001:2015 Certified
Documented quality management system
Mitutoyo Quality Inspection
Calipers, micrometers, height gauge, DTIs
Export-Ready Packaging
VCI film, ISPM-15 wooden crates
RFQ Response in 24 Hours
Quote within one working day
NDA Available
Your drawings stay confidential
On this page10 sections
At a glance
Materials & technical specifications
Material choice drives cost, lead time and performance. We stock or source certified bar and plate in Stainless Steel, Aluminium, Brass, PEEK and Delrin (Acetal / POM), with EN 10204 3.1 material certificates available on request.
- Process
- Tight Tolerance Machining
- Materials
- Stainless Steel, Aluminium, Brass, PEEK, Delrin (Acetal / POM)
- Standard tolerance
- ±0.005 mm on selected turned diameters by agreement; ±0.01 mm typical
- Surface finish
- As-machined (Ra 1.6–3.2 µm), fine turned (Ra 0.8 µm), passivation and electropolishing through partners
- Max turning size
- Ø400 × 1200 mm (conventional), bar work on CNC lathes
- Max milling envelope
- 800 × 500 × 400 mm (VMC)
- Threading
- M3–M32 auto tapping; metric, BSP, NPT, UNC/UNF
- Batch size
- 1 prototype to 10,000+ pieces
Tight Tolerance Machining: overview
Critical features held to ±0.005–0.01 mm. Critical features are finished in a controlled final pass, measured with Mitutoyo micrometers after temperature stabilisation, and recorded on the inspection report.
Every order is programmed in VISI or Delcam CAM, machined on CNC turning centres and VMC, and inspected in our Mitutoyo quality lab before it is packed and shipped.
Tight Tolerance Machining capability
Our tight tolerance machining cell handles single prototypes through repeat batches of tens of thousands. Typical work includes shafts, bushings and valve components.
Before quoting, our engineers review your STEP, IGES or PDF drawing for machinability and suggest changes that reduce cost without affecting function.
- CNC turning centres (LMW, Jyoti, Ace Micromatics): Shafts, bushings, fittings, turned plastic parts
- Vertical machining centre (VMC) (Ace Micromatics, FANUC control): 3-axis milling, bed 800 × 500 × 400 mm
- Auto tapping machines (M3 to M32 capacity): High-volume internal threading
- Conventional lathe (Uma Enterprises): Turning up to Ø400 × 1200 mm
- Band saw (Rajlaxmi): Bar stock cutting and blank preparation
Tolerances & surface finish
Standard capability for this work is ±0.005 mm on selected turned diameters by agreement; ±0.01 mm typical. Bores can be held to H7 and bearing seats to h6/g6 fits. Where your drawing calls for tighter limits, we agree the critical characteristics up front and record them on the inspection report.
As-machined finishes of Ra 1.6–3.2 µm suit most functional surfaces. For seals, bearing journals and sliding fits we run a fine finishing pass to reach Ra 0.8 µm.
Plating, anodising, passivation and heat treatment are arranged through qualified partners and re-inspected in-house before packing.
Quality inspection process
Our ISO 9001:2015 system covers incoming material, first-article inspection, in-process checks and final inspection. Records are kept for every batch so any part can be traced back to its material heat.
Every shipment includes a dimensional inspection report, with material test certificates (EN 10204 3.1) on request.
- Mitutoyo digital vernier calipers
- Mitutoyo height gauge
- Granite surface plate
- Mitutoyo outside micrometers
- Inside calipers and bore gauges
- Dial test indicators
Built for automotive applications
Automotive buyers need repeatable high-volume parts at a competitive piece price with consistent quality. We regularly machine shafts, bushings, fittings, fasteners and brackets in Stainless Steel, Aluminium, Brass, Nylon and Delrin (Acetal / POM).
ISO 9001:2015 quality system with first-article inspection and in-process controls. PPAP-style documentation on request.
Export packaging & logistics
We export to 45+ countries from Nhava Sheva (JNPT), with sea transit of about 4–7 days to the Gulf, 18–28 days to Europe and the UK, and 25–35 days to North America. Air freight is available for urgent orders.
All parts are protected with VCI film and packed in ISPM-15 crates. We quote EXW, FOB or CIF to suit your logistics.
China+1 sourcing from India
India has become a leading China+1 destination for precision machined components. For international buyers, we combine competitive piece prices with an ISO 9001:2015 quality system, English-speaking engineers and drawings worked to ISO, DIN and ASME standards.
We reply to RFQs within 24 hours, sign NDAs before receiving drawings, and give you one point of contact from quote to delivery.
- ISO 9001:2015 certified
- Mitutoyo quality inspection
- Export-ready packaging
- RFQ response in 24 hours
- NDA available
How to order
Getting a quote for tight Tolerance Machining is simple:
- Send your drawing (PDF) and 3D model (STEP or IGES) with material, quantity and destination.
- Our engineers review it and send a quote with lead time within 24 hours.
- Approve samples or a first-article report for new parts.
- We machine, inspect, pack and ship with full export documents.
Frequently asked questions
Get a quote in 24hWhat tolerances can you hold for tight Tolerance Machining?
Standard capability is ±0.005 mm on selected turned diameters by agreement; ±0.01 mm typical. Bores to H7 and shaft fits to h6/g6 are routine; tighter limits are agreed per drawing.
Are you ISO certified?
Yes. We are ISO 9001:2015 certified. We do not hold AS9100 or ISO 13485, but we work under customer quality plans and supply full inspection reports and material certificates.
What files do you need for a quote?
A PDF drawing with tolerances plus a STEP or IGES model is ideal. Include material, quantity, finish and destination. We reply within 24 hours.
What is your minimum order quantity?
There is no fixed MOQ. We machine single prototypes, low-volume batches and high-volume production runs.
Do you export?
Yes. We export to 45+ countries across North America, Europe, the Middle East, Africa, Asia-Pacific and Latin America.
Keep exploring
Related capabilities, materials and markets
Everything below is machined in the same Pune plant to the same ISO 9001:2015 system. Follow whichever is closest to the part you are sourcing.
Capabilities & related parts
6Export markets
8- 🇺🇸 Tight Tolerance Machining for United States
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- 🇲🇽 Tight Tolerance Machining for Mexico
- 🇬🇧 Tight Tolerance Machining for United Kingdom
- 🇩🇪 Tight Tolerance Machining for Germany
- 🇫🇷 Tight Tolerance Machining for France
- 🇮🇹 Tight Tolerance Machining for Italy
- 🇪🇸 Tight Tolerance Machining for Spain
Request for quotation
Send your drawing. Get a quote in 24 hours.
Upload STEP, IGES or PDF files. NDA available on request. Quoting: Tight Tolerance Machining.