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Connector & Contact Pin Machining (CNC Swiss Lathe)

Connector and contact pin machining on the Goodway SW-20 Swiss lathe: 14 families, 140 types, ⌀1–19.6 mm. Brass, stainless, steel, aluminum · h6/H7. Drawing + quote.

Manufacturing Scope

Connector and contact pins are precision-turned parts that carry the electrical and mechanical connection in test-and-measurement systems, automation cabinets, energy hardware and electronic assembly lines. This category spans 14 families and 140 types: contact pins, socket contacts, terminal pins, knurled contacts, internally threaded female contacts, hex-body contacts, tapered-tip test contacts, tapered test-probe tips, 4 mm banana tips, pointed pen-probe tips, RF test pins, calibration (gauge) pins, spring-loaded pogo pistons and crocodile adapter tips. We machine brass for conductivity and easy solderability, stainless steel where corrosion and wear resistance matter, plus steel and aluminum. Ayyıldız Robotics has produced in Düzce since 2009; we turn these parts on the Goodway SW-20 CNC Swiss-type lathe across ⌀1–19.6 mm (the SW-20 ceiling is ⌀20 mm). On critical diameters we hold ISO fits such as h6/H7 and tolerances on the order of ±0.01 mm. Beyond the 140 catalog types we produce custom sizes to your technical drawing. Pricing is by quote.

14 families140 types⌀1–19.6 mm4 materials
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Part Families

Contact PinTurned contact pin with cone tip; brass body and chamfer ensure low resistance and easy socket entry.10 types⌀1–9 mmOpen the code & size table →Socket ContactFemale socket contact with bore; precise inner diameter and lead-in chamfer grip the mating pin securely.10 types⌀2.5–12 mmOpen the code & size table →Terminal PinStepped terminal pin for PCBs; shoulder stop and flat PCB tip provide precise board seating.10 types⌀1.6–11 mmOpen the code & size table →Knurled ContactPress-fit contact with knurled body; the knurl prevents rotation and pull-out in the plastic housing.10 types⌀1.8–13.6 mmOpen the code & size table →Female Threaded ContactFemale contact with internal thread; screw connection allows a high-current terminal and re-mountable assembly.9 types⌀4–18 mmOpen the code & size table →Hex-Body ContactHex-body threaded contact; the wrench flats let it clamp as a panel-mount threaded terminal.9 types⌀6.4–19.6 mmOpen the code & size table →Taper-Tip Test ContactSpring-probe test contact with long taper tip; the sharp cone self-guides onto pads for reliable measurement.10 types⌀1–10 mmOpen the code & size table →Test Probe Tip (Conical)Conical-tipped precision contact tip that screws into spring-loaded test probes.10 types⌀2–6 mmOpen the code & size table →Banana Plug Tip (4 mm)Test plug tip fitting 4 mm banana sockets with a threaded connection shoulder.11 types⌀2–12 mmOpen the code & size table →Pen Tip (Sharp Probe)Slender sharp contact pen tip mounted onto multimeter pencil probes.10 types⌀2–6.4 mmOpen the code & size table →RF Test PinStepped precision-tolerance RF contact pin for high-frequency test sockets.10 types⌀1.5–8.1 mmOpen the code & size table →Calibration Pin (Gauge)Hardened ground precision-diameter pin for dimensional calibration and gauging.11 types⌀3–12 mmOpen the code & size table →Spring Contact Plunger (Pogo)Bored spring-contact plunger body that fits inside test-fixture pogo pins.10 types⌀1.5–5 mmOpen the code & size table →Crocodile Adapter TipInternally threaded adapter contact tip joining crocodile clips to measurement leads.10 types⌀4–15 mmOpen the code & size table →

Frequently Asked Questions

Which materials are the contact pins made from?

We machine four main materials by application: brass for high conductivity and easy solderability, stainless steel where corrosion and wear resistance are needed, steel for mechanical strength, and aluminum for light or conductive uses. When surface treatment such as plating is required, we leave the part at a tolerance that suits post-machining coating. We finalize the material choice together at the quotation stage.

What tolerances and precision do you work to?

The Goodway SW-20 Swiss lathe is stable enough to hold ISO fit classes such as h6/H7 on seating and mating diameters, and tolerances on the order of ±0.01 mm on critical dimensions. Even on long, slender pin geometries the guide bushing preserves concentricity and surface quality. Just state your tolerance and surface-roughness requirement on the technical drawing.

Can you make a custom size or a contact not in the catalog?

Yes. The 140 catalog types are a starting point; our core work is custom manufacturing to a drawing. Within the ⌀1–19.6 mm range we adapt features to your part — tapered tips, knurling, internal/external threads, hex bodies, pogo pistons and more. Send a dimensioned technical drawing (PDF/STEP/DWG) and we confirm the dimensions with you before production.

Is there a minimum order quantity?

We do not impose a hard minimum; we handle both prototypes/samples and serial production. Because setup cost on a Swiss lathe is fixed, the unit price falls as quantity rises. Approving a sample first and then moving to a run is the most efficient path. We agree on the right batch size together in the quote.

What is the lead time and how do I get a quote?

Lead time depends on material supply, quantity and part complexity; we give a firm date with the quote. Send your technical drawing or the catalog type you chose, with material and quantity — we usually reply within 24 hours. We ship domestically and export from Düzce, Türkiye.

Related Categories

Pins Bushings Shafts Fasteners Nuts & Adapters Spacers & Standoffs Fittings Nozzles Valve Parts Fixing & Locating Membrane Press Spares Custom Turned Parts Medical & Dental Parts Couplings & Shaft Adapters Bearing & Seal Adapters Electrodes & EDM Tips Opto-Mechanical Parts Textile Machine Parts Automotive Precision Parts Hydraulic & Pneumatic Pistons Mold & Die Components Joint & Pivot Elements Micro & Watch Parts
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