Fortified Spring Test Probes

  • Thicker wall barrels.
  • Minimum clearance between plungers and barrels.
  • Contact points with sufficient surface area.
  • Made in the U.S.A.
  • 3 week turnaround for Catalog Products

Scan To View Our Catalog

Proud Member of:

What We Do

Quick Turn Around

Made For You

Made In the USA

Low Volume Purchase OPtions

Global Recipients

Providing Custom Pin Solutions Since 1977

Lone Star Industrial was founded in 1977 by brothers Bob and Ralph Navar. Together they were able to foresee the need for testing equipment, to include fixtures, in the wire harness industry. Lone Star Industrial (LSI) began making Spring Test Probes to fit specialized fixtures. LSI has continued to adapt to the needs of the wiring harness manufacturing industry with innovative and redefined products.

How It Works

Seated terminals allow for contact between the terminal and spring test probe at the correct depth.

Non-seated terminals will not allow proper connection between a terminal and spring test probe.
Order Custom Pins

How to Order Custom Pins

  1. Get Measurement for Barrel Size needed.
  2. Search Catalog for Barrel Size.
  3. Fill out our Custom Pin Form below or Contact Us for more information.

Our Latest Design

Looking for a custom pin?

At Lone Star Industrial we specialize in customized solutions.
Have a design or need design services? Send us your specs for your customized solutions.
Max. file size: 750 MB.
This field is for validation purposes and should be left unchanged.