Sparex source: https://us.sparex.com/hex-head-cap-screw-m16x50mm-tensile-strength-8-8-10-pcs-box-141193.html Product: Hex Head Cap Screw - m16x50mm, Tensile Strength 8.8 (10 Pcs. Box) - Sparex S.141193 SKU: S.141193 Listing note: Tensile strength 8.8, ANSI, Clear Zinc, Pack Quantity 10 pcs. Detail enrichment pending: OEM cross references, fitment, catalog pages, and full specifications.