Product Description Screw; M5 x 20L, insulator/fan cover Engine Application: G230RC / G260RC / GP290RS* 1 of 2 (Insulator manifold mount screw)Engine Application: G23LH* 1 of 2 (Insulator mainifold mount screw)* 1 of 4 (fan cover mount screw)Specifications:* M5 x 20L* Phillips Head with locking washers