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 591-41 Packing Screw $2.50 Add to cart 591-24A Replacement Needle Bushing Assembly $29.95 Add to cart 591-26A Air Valve Assy. $19.95 Add to cart 591-23 Replacement Fluid Needle Spring $5.95 Add to cart