part number: AN310-10 AN310-10 AIRFRAME CASTLE NUT Plain airframe castle nut Material: Steel, cadmium plated Thread: 5/8-18 Dimensions: A: 1 inch B: 1-5/32 inch C: 23/32 inch D: 1 inch MSRP: Now: $7.60 Add to Cart part number: AN310-10 AN310-10 AIRFRAME CASTLE NUT MSRP: Now: $7.60 Add to Cart