... - M20 3. Material: stainless steel 200, 201, 304 or 316 Lock Flange Nut 1. Standard: DIN6926 (DIN1663);2. Thread: coarse, fine ... Group Company, with stable quality and competitive price;5. Processing: by multi-position cold-heading machines, together with precise moulds and ... : normal or heavy;8. Other names: flange lock nut, flange hex lock nut or hex flange lock nut. Stainless Steel Lock Flange Nut