MIDWEST FASTENER CORP 50369 Lock Nut 3/4"-10 Steel Grade 8 Yellow Zinc 10 PK

3/4"-10 Grade 8 lock nuts – 10 pack

This pack contains ten 3/4"-10 steel lock nuts manufactured to Grade 8 strength with a yellow zinc finish. They are designed for heavy-duty fastening where vibration resistance and high clamping force are required. The integrated flange distributes load across the joint face, reducing surface damage and helping the nut stay tight on uneven surfaces. Suitable for automotive, industrial and structural assemblies.

For high-strength flanged fastening

These nuts suit mechanics and fabricators who need Grade 8 rated hardware with a built-in washer face for 3/4"-10 bolts or studs. They are not for applications that require a standard hex nut without a flange, left-hand threads, or a different strength class such as Grade 5 or metric sizes. Buyers needing stainless steel, nylon-insert locking, or larger pack quantities should look at other listings.

Check thread pitch and grade compatibility

Verify that the mating bolt or stud uses 3/4"-10 UNC threads and that Grade 8 strength matches the joint design. Confirm the yellow zinc coating is acceptable for the operating environment and that the flange diameter clears adjacent components. Ensure the 10-piece quantity meets the project requirement before ordering.