Why a Batch Is Harder Than a Part
Sensor and instrumentation fittings carry pressure, transducers or probes, so each one needs a clean thread, a sealing face, and a bore sized to the sensor — to a controlled tolerance. The challenge isn't machining one; it's machining hundreds that are interchangeable, so the customer's assembly line can pick any fitting from the tray and it fits, seals and reads the same. Drift across a batch is the enemy.
What "consistent" really means here: the thread gauges the same on the first and last piece, the seal face is square and to the same finish, and the sensor bore holds its diameter across the run. We hold these by in-process gauging, not by hoping.
How It Was Made
1 — Turn complete in one setup
The fittings were CNC-turned — thread, seal face, hex/flats and bore produced in as few setups as possible so features stay concentric and consistent piece to piece. Stainless (typically 303 for machinability or 316 for corrosion) was chosen for the service environment; see CNC turning.
2 — Gauge in-process across the run
Threads were checked with ring/plug gauges and the sensor bore with pin gauges at intervals through the batch, so any tool wear is caught and corrected before it drifts out of tolerance. This is the difference between a sample and a production batch — see our tolerance & inspection capability.
3 — Final inspect, then export-pack
The finished fittings were inspected, then trayed and packed to survive international shipping — the tidy tray in the photo is how a consistent batch is delivered, not a staged shot. Quantities scale from a pilot run to ongoing supply via our low-volume production.
The Workflow
Set up turning
Thread, seal face, hex and bore programmed for minimal setups and concentricity.
Run the batch
Fittings turned complete; first-article checked before the run.
Gauge through the run
Thread and bore gauged at intervals to catch tool wear early.
Inspect & export-pack
Final inspection, then trayed and packed for international shipping.
Outcome
A tray of interchangeable stainless fittings the customer can feed straight into assembly — every thread, face and bore the same. Repeatable, gauged batch turning of fittings and connectors is a staple of our industrial equipment and instrumentation work.
Need a batch of fittings or connectors? Send a drawing or a sample plus the quantity and the thread/seal standard. We turn them consistent, gauge through the run, and export-pack. Email [email protected] or message us on WhatsApp.
// More Case Studies