NUT 1/2-NF SLT TYPE 5

Technical Specifications
Thread Size: 1/2″-20 UNF (Fine Thread).
Type: Slotted (SLT), often used with a cotter pin to prevent loosening in high-vibration environments.
Grade: Grade 5, providing a minimum tensile strength of 120,000 psi.
Dimensions: Measures approximately 3.95 x 6.0 x 1.05 inches (package dimensions) and weighs about 0.06 lbs per unit.