Description ACME Threads - for 1.5 valve 1.5 inch Nut has an Outside Diameter of 2.4 inches THIS NUT HOLDS THE LOCKING DUST CAP ON. Made of Gray Plastic Fits all Milk Tank Valves with a 1.5 inch threaded bevel seat outlet. 3897 45204 5744150 also available in stainless steel at link below Made in USA Original Parts by Paul Mueller Company Related Items; M-30244 - 1.5 Locking Dust Cap or End Cap M-3897 - 1.5 Inch Gray Plastic Nut (this item) 1000-391 - 1.5 Inch Stainless Steel Nut (same as this item but in stainless steel) 1000-571 - 1.5 Inch Stainless Steel End Cap 1000-581 - 1.5 Inch White Plastic End Cap updated December 2025
