M5 Aerotight A2 St/Steel Locking Nuts All metal Stiff nut with no inserts. Can be re-used. Will stay in position whether tightened down or not. No special tools required. When assembled on the screw, 2 full threads should protrude through the nut. A2 stainless steel has good resistance to corrosion except in severe industrial and marine conditions. MPN: M5 Aerotight A2 St/Steel Locking Nuts Attributes: Box Quantity: 10 Driving Features: Hexagon Grade: 316 Material: A2 Stainless A2 Stainless Nut Type: Stover Surface Treatment: Plain Thread: Metric Thread Direction: Right Thread Size: M5