Aoyama's fasteners satisfy the highest levels of function, performance, and quality.

"De facto Standard " "Fasteners": Essential components for automobile assembly.
"Global Standard" = Low-cost and high-functioning fasteners with excellent fastening performance.
"Advanced Products" = One-of-a-kind products made with core technologies to meet customers' needs.
Aoyama Seisakusho-developed products, characterized by these two features, are now indispensable to the world's automobile industry as the de facto standard.
Only a few manufacturers in the world are capable of both in-house development and manufacturing of bolts, nuts, and screws. And when composite products using plastic material are taken into account, Aoyama Seisakusho is in a class of its own, globally.