Hex Slotted Nuts

Slots are cut across the center of the flats of a hex nut. These slots are used to secure a safety wire or cotter pin to a fastener with a drilled hole. This creates a secure hold to prevent loosening between the nut and the fastener. Castle nuts are the same dimensionally but have more curved slots cut in the top.

Our off-the-shelf slotted hex nuts start at a 1/4 ” and go up to a 2” thread size. We carry them off-the-shelf in plain steel, steel zinc, and in a heavy pattern. Our castles nuts also come in low carbon, grade 5 steel, and 316 stainless steel. We have the capability to supply slotted nuts in other materials such as brass, silicon bronze, and other materials as well. China Aluminum Screws, Inc. can turn any hex nut as a slotted hex nut as a secondary operation.