1/4-28 View cart “Castellated Nut” has been added to your cart. Showing all 2 results Default sorting Sort by popularity Sort by latest Sort by price: low to high Sort by price: high to low $1.47 Diamond, Mooney, Piper, OtherCastellated Nut Add to cart $0.55 Diamond, Mooney, Piper, OtherSelf Locking Nut Add to cart