View cart “591-14A Air Bushing Assy.” has been added to your cart. 591-06 Lock Screw$12.50 591-06 Lock Screw quantity Add to cart Category: TB591 Adhesive Spray Gun Description Description Replacement Lock Screw Related products 591-26A Air Valve Assy. $19.95 Add to cart 591-42 Retaining Ring $3.50 Add to cart 1 TB-591 Spray Gun $175.00 Add to cart 591-39 Fluid Connector $9.95 Add to cart