View cart “591-44 Stud” has been added to your cart. 591-41 Packing Screw$2.50 591-41 Packing Screw quantity Add to cart Category: TB591 Adhesive Spray Gun Description Description Replacement Packing Screw Related products 591-24A Replacement Needle Bushing Assembly $29.95 Add to cart 591-08 Side Port Control $12.95 Add to cart 591-26A Air Valve Assy. $19.95 Add to cart 591-42 Retaining Ring $3.50 Add to cart