“591-31A Air Inlet Assy.” has been added to your cart. View cart 591-44 Stud$3.50 591-44 Stud quantity Add to cart Category: TB591 Adhesive Spray Gun Description Description Replacement Stud Related products 591-39 Fluid Connector $9.95 Add to cart 591-01 Retaining Ring $14.95 Add to cart 591-26A Air Valve Assy. $19.95 Add to cart 591-41 Packing Screw $2.50 Add to cart