“591-20 Needle” has been added to your cart. View 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 591-43 Trigger $6.50 Add to cart 591-26A Air Valve Assy. $19.95 Add to cart 591-14A Air Bushing Assy. $36.95 Add to cart 591-09 O Ring $4.50 Add to cart