This is a Trilobe, thread forming, or thread rolling screw, ideal for applications where the screw is being threaded into plastic or metal.
A flat washer is part of the 5/16 hex head, providing more surface area contact than a regular hex head. The increased bearing area decreases the likeliness of crushing mating surfaces. Trilobe, or Thread Rolling, screws have a blunt tapered point that requires a pre-drilled or punched hole; eliminates chips and permits replacement with standard screw. Zinc plating froms a zinc carbonate film that greatly retards the corrosion rate in a normal atmosphere, which is similar to the aluminum oxide film that forms on aluminum that accounts for its low corrosion rate.
- Quantity: 25
- Diameter: #10
- Finish: Zinc
- Head: 5/16 Hex with integral washer
- Thread Length: 1/2"
- Material: Steel
- Thread Size: 10-24
- Thread Type: Trilobe, Thread Rolling
- Weight per Screw: 0.006 lbs
- Package Weight: 0.2 lbs