Assembly Tool Specialists, Inc. is a U.S.-based designer and manufacturer of special-application assembly tools and gages, serving manufacturers since 1938. We specialize in mutilation-prevention fastening tools and NO-MAR gages that protect finished products, reduce rework, and improve operator safety on the assembly line.

Our fastening tools feature SPINZ-FREE sleeves to prevent surface damage and cover critical pinch points to help reduce workplace injuries. Our lightweight, easy-to-read plastic gages provide accurate measurements without marking painted or finished surfaces. All products are proudly Made in the USA, and we are a WBENC-certified woman-owned company.

From concept through production, Assembly Tool Specialists partners closely with customers to deliver durable, application-specific solutions that improve quality, safety, and efficiency in assembly operations.