Keystone

1950s – Founding & early production
Start as a manufacturer of small mechanical and electrical components for the growing US‑electronics industry.

Focus on punching‑ and turned parts for radio‑ and industrial equipment.

1960s–1980s – Expansion of the product range
Expansion to include battery holders, fuse holders, connectors, test points.

Building a broad OEM‑customer base in the USA.

1990s–2000s – Internationalization
Greater focus on global markets.

Introduction of modern manufacturing techniques and quality standards.

2010s–present – Modern precision manufacturing
ISO‑9001‑Certification, expansion of customized manufacturing.

Publication of extensive catalogues (e.g. B. M60, M65, K75) for OEM‑Designer.