DT Precision

Family-owned San Jose CNC Swiss shop making small diameter, tight tolerance parts for aerospace, defense and medical customers.

Capabilities

• CNC Swiss machining
• Small diameter tight tolerance parts
• Prototype to production

Quality & certifications

AS9100, ISO 13485, ISO 9001, ITAR registered (as stated on site).

Request a quote

To request a quote from this shop, use the Request a Quote form. Tell us the part, material, quantity and deadline, and we will pass your request to the shop.

Swiss CNC Machining in San Jose with DT Precision

Very small, very precise parts are a specialty of their own. The diameters are tiny, the tolerances are tight and the quantities can run high. DT Precision is a family-owned San Jose CNC Swiss shop listed here for small diameter, tight tolerance parts for aerospace, defense and medical customers, with CNC Swiss machining, small diameter tight tolerance parts and prototype to production. The listing shows AS9100, ISO 13485, ISO 9001 and ITAR registration, as stated on the site. This page explains how Swiss machining works and how to prepare a request for Swiss CNC machining in San Jose.

How a Swiss machine works

A Swiss-style lathe feeds bar stock through a guide bushing right next to the cutting tools. That support keeps a thin part from flexing as it is cut, which is why Swiss machines can hold tight tolerances on long, slender parts. The headstock slides to feed the bar forward, and the tools stay close to the guide. Many Swiss machines also have live tools, so they can drill and mill features while the part is held.

Parts that suit Swiss machining

• Pins and small shafts
• Screws and fasteners
• Connector parts
• Surgical and dental components
• Small fittings with cross holes or flats

A part with a large diameter or a short length may be cheaper on a standard lathe. Swiss machines shine on small diameters and long ratios.

Tight tolerance on tiny parts

On very small parts, a few ten-thousandths of an inch can be a large fraction of a feature. Measuring takes care too, since tools must reach tiny features and temperature matters. Tell the shop which dimensions are critical, and how you will check them. Agreeing on the measuring method avoids disputes.

Prototype to production

The listing says the shop handles prototype to production. Swiss machining is often used in production because the process repeats well. A prototype quantity may cost more per part, since setup takes the same effort. Tell the shop your annual volume. Share your reorder plan as well.

Industries on the listing

The listing names aerospace, defense and medical. Describe any documents you need, such as material certificates, inspection reports or lot traceability.

Quality listing

The listing shows AS9100, ISO 13485, ISO 9001 and ITAR registration, as stated on the site. AS9100 is an aerospace quality standard. ISO 13485 applies to medical devices. ITAR is a U.S. regulation covering certain defense items and data. If your project falls under ITAR, tell the shop early. Your own compliance team decides whether it applies.

Family-owned

The listing says the shop is family-owned. Many buyers like a direct line to the people who plan the work. As always, judge by samples and first orders.

What to include in an RFQ

• Drawing and 3D model with revision
• Material, bar size and grade
• Quantity now and yearly forecast
• Critical tolerances and measurement method
• Finish, cleaning and packaging
• Document and inspection needs
• Delivery date

Packaging matters for tiny parts

Small parts can scratch or tangle in transit. Ask how parts are packed, and say if you need individual trays, bags or counts. Good packaging protects the work that went into the part.

A local Swiss source

Swiss shops are less common than general machine shops, so having one in San Jose gives Silicon Valley buyers a convenient local option for small precision parts.

Questions about a first Swiss order

Ask how many pieces the shop recommends for a first lot, how long the setup will take and how the first parts will be inspected. Ask how the shop handles bar stock supply and whether a particular bar size changes the price. For long term programs, ask whether a blanket order with scheduled releases is possible.

To start, Request a Quote through Machining Marketplace and we will pass your request to DT Precision.

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