Skip to main content
Sign In / EnrollGet rewarded!

Sign In / EnrollGet rewarded!
A woman outside with a dog
A woman outside with a dog

Hillman 5/16 in.-24 TPI Zinc-Plated SAE Hex Castle Nuts

Shop all Hillman
Hillman 5/16 in.-24 TPI Zinc-Plated SAE Hex Castle Nuts

Item # 1240398

Hillman Hillman 5/16 in.-24 TPI Zinc-Plated SAE Hex Castle Nuts
Hillman Hillman 5/16 in.-24 TPI Zinc-Plated SAE Hex Castle Nuts
Hillman 5/16 in.-24 TPI Zinc-Plated SAE Hex Castle Nuts

Item # 1240398

Hillman Hillman 5/16 in.-24 TPI Zinc-Plated SAE Hex Castle Nuts
Hillman Hillman 5/16 in.-24 TPI Zinc-Plated SAE Hex Castle Nuts

Fine Castle Nuts are locking devices. These nuts have slots cut into one end and are often used in conjunction with a cotter pin. The slots accommodate the cotter pin when used with a drilled shank fastener. Castle and slotted nut styles are interchangeable dependent on the desired design.

  • SECURES EASILY: Can be secured with a cotter pin through a drilled hole in the fastener (pin not included)
  • GREAT FOR AUTOMOTIVE APPLICATIONS: Ideal for attaching wheels to spindles
  • USE IN LOW-TORQUE ASSEMBLIES: To preserve integrity, use castle nuts in instances of low torque
  • CORROSION-RESISTANT FINISH: Zinc plating offers moderate protection against rust and corrosion