View cart “591-20 Needle” 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 591-02 Air Cap $29.95 Add to cart 591-43 Trigger $6.50 Add to cart 591-39 Fluid Connector $9.95 Add to cart 591-08 Side Port Control $12.95 Add to cart