M20‑2.50 × 170 mm Hex Cap Screw – Stainless Steel A4 (316), DIN 933

Designed for very long‑reach, heavy‑duty metric fastening in corrosive and high‑load environments, the M20‑2.50 × 170 mm hex cap screw is manufactured to DIN 933 specifications from A4 (316) stainless steel. The fully threaded length allows maximum thread engagement through thick or multi‑layer assemblies, providing uniform clamping force and reliable load transfer across extended fastening spans. A standard hex head enables secure installation and removal using common industrial hand or power tools. A4 (316) stainless steel delivers excellent resistance to rust, moisture, salt exposure, and chemical attack, making this fastener well suited for marine, offshore, outdoor, and industrial applications. Commonly used in heavy machinery, structural steel connections, equipment frames, and stainless steel fabrications where extended length, corrosion resistance, and long service life are critical.