... -M52, 3/16"-2" 2. Length: 30mm-3000mm 3. Class: 4.8,5.8,8.8,12.8 1) Standards: B7 ... B8 B8M DIN 975, DIN 976A, , UNC ROD, BSW ROD2) Size : M3-M56, UNC ... : 1000-3000mm,3-12 feet3) Material: stainless steel, low carbon steel, carbon steel, alloy steel4) Grade: 4.8,5.8,8,8.8 ...