Welding locating pins
Pins for nut, bolt, and projection welding that locate the part without conducting current.
Product family
Ceramic locating pins and dowel pins
Insulating, non-magnetic, wear-resistant ceramic pins for welding fixtures, nut feeding, automation, and test sockets, ground to diameter with controlled tip profiles.
Product overview
What we make and how it is reviewed
Ceramic locating pins replace steel pins where weld spatter, electrical contact, magnetism, or wear cause problems. In projection and resistance welding, a ceramic pin locates the nut or part without carrying current, and spatter does not stick to it as easily.
Typical requests include zirconia and alumina locating pins for nut and bolt welding, stepped dowel pins, guide pins for automation and test fixtures, pin needles, and ceramic pins with metal bases or threads. Pins are ground to diameter, and the tip is ground to a cone, radius, or chamfer.
Fit in the fixture, tip profile, and protection against side impact decide pin life. Send the pin drawing, the fixture fit, and the operation.
Product types
Part types we quote to drawing
These are made to customer drawings or samples, not sold from stock. Final material, route, and acceptance are confirmed for each drawing.
Dowel and guide pins
Plain and stepped pins that position parts in automation and assembly fixtures.
Test-fixture pins and needles
Fine insulating pins and needles for test sockets and electronic fixtures.
Pins with metal bases
Ceramic pins bonded or pressed into threaded metal bases for quick replacement.
Decision map
Requirements that change machining and quotation
Use the final column as a drawing and RFQ check. A requirement is easier to review when its function and acceptance evidence are stated together.
| Requirement | Why it changes the route | What to define in the RFQ |
|---|---|---|
| Pin diameter and fixture fit | Press fits load the ceramic; clearance fits let the pin move and wear the hole. | Give pin diameter tolerance, fixture hole size, and fit type. |
| Tip profile | Cone or radius tips guide the part; sharp tips chip under side load. | Specify tip angle or radius, length, and acceptable chips. |
| Electrical and heat duty | Welding pins must insulate and survive spatter and heat cycles. | State welding type, current path, and temperature near the pin. |
| Retention method | Threads, bonding, or press fits decide how load reaches the ceramic. | Show the base or retention design and who assembles it. |
Material paths
Select against the failure mode
Zirconia
Preferred for welding and guide pins that see side impact; tough and wear-resistant.
Alumina
Higher hardness and insulation for low-impact pins and test fixtures.
Silicon nitride
Considered for hot or thermal-shock duty near welding.
Quote-ready package
Information to send for review
- 1 Pin drawing with diameter, length, and tip profile.
- 2 Fixture hole size and fit type.
- 3 Operation: welding type, automation, or test fixture.
- 4 Retention method or metal base design.
- 5 Quantity, spare-part plan, and target timing.
Engineering guides
Continue by component, material, or acceptance problem
Each guide below narrows one part family or manufacturing constraint and leads back to the drawing information needed for review.
Ceramic Locating Pins and Fixture Plates: Design and RFQ
Specify ceramic locating pins, precision bores, datum faces, fits, edge criteria, inspection evidence, and protected packaging for repeatable manufacturing fixtures.
Zirconia Ceramic Machining for High-Strength Precision Components
How engineers should specify zirconia ceramic machining for high-strength pins, plungers, bushings, sleeves, valve parts, wear components, fixtures, and precision mechanisms.
Ceramic Machining Tolerances: Feature, Datum, and Inspection Map
Map ceramic machining tolerances to functional features, datums, finishing access, and inspection evidence before comparing quotations or approving a drawing.
Questions before quotation
Product RFQ FAQ
Zirconia or alumina for welding locating pins?
Zirconia is usually chosen because its toughness resists the side knocks pins get when parts are loaded. Alumina suits lower-impact fixtures.
Can pins be supplied with threaded metal bases?
Yes, ceramic-to-metal pin assemblies can be reviewed. The joint method and pull or torque test must be agreed.
Engineering RFQ
Send your drawing and ceramic requirements for engineering review
Start with the part function, material or grade if known, quantity, and the critical requirements; an early-stage brief is enough to begin. If online submission is interrupted, the form prepares the same RFQ as an email instead.
- Useful files: STEP/STP, X_T/X_B, IGES, STL, or PDF drawings.
- Upload limit: up to 3 files, 5 MB each, 8 MB total.
- Sensitive projects: do not send export-controlled, classified, or restricted data before an approved handling agreement is in place.
Prefer to use your own email?
RFQ email: info@szcomo.com
RFQ email prepared
Send it from your email app
Your email app should now show a message to info@szcomo.com with these details. Attach CAD or drawings and press send. If nothing opened, copy the text below into an email to info@szcomo.com.