Screw The accessory is the best tool to protect metal jackets and insulation coverage of tanks, boilers and pipes that led to high system durability and decreasing the cost. Pictures Technical Data Pictures Technical Data Pictures Technical Data Description Unit Properties Stainless Steel 304 Type 4.2 mm Diameter 13 mm Length 7.85 gr/cm³ Density Chemical Analysis N Ni Cr S P Mn Si C ≤ 0.11 7.9-10.65 17.3-19.7 ≤ 0.035 ≤ 0.055 ≤ 2.04 ≤ 0. 80 ≤ 0.08 Mechanical Properties HARDNESS U.T.S YIELD STRENGTH (0.2% OFFSET) ELONGATION (%) 92≥ ≥515 ≥205 ≥40