Midwest Fastener 3/8″-16 Zinc Plated Coarse Thread Slotted Hex Nuts – 87609 – Bolts

Product Features:

• A castle nut is a hex nut with slots (notches) cut into one end. The slots allow for a cotter pin to be installed between them and through the bolt/stud the nut is being threaded onto. The cotter pin prevents the nut from working loose. Often found in automotive applications like ball joints and tie rod ends.
• Item Type: Slotted Nut
• Thickness: 21/64″
• Drive Type: 9/16″ Wrench
• Thread Size: 16
• Thread Type: Coarse
• Material: Steel
• Finish: Zinc