1/4-28 Grade 5 Serrated Flange Whiz Lock Nuts - Fine Thread, Zinc Clear Finish (TheBoltBarn)

Working on a project that needs some serious locking power?

These serrated flange lock nuts, also called whiz lock nuts, are what you need.

They're 1/4-28 fine thread and Grade 5, so they're strong.

The serrated flange bites into the surface to prevent loosening from vibration, so you often don't even need a lock washer.

They have a zinc clear finish for some corrosion resistance.

You pick the quantity you need.

Drive style is external hex.

Made by TheBoltBarn, these are quality fasteners.

Stock up for your next automotive or machinery repair.