Sparex source: https://us.sparex.com/bolt-m18x50mm-din-961-tensile-strength-8-8-51550.html Product: Bolt, m18x50mm (din 961) Tensile Strength 8.8. - Sparex S.51550 SKU: S.51550 Detail enrichment pending: OEM cross references, fitment, catalog pages, and full specifications.