M3.5-1.57 x 14 Metric 6-Lobe Flat Head PT Alternative Fully Threaded Zinc & Bake 3WB The thread is designed to

The thread is designed to cut into the material being fastened

The screw has a thread cutting point that allows it to create its own threads as it is driven into wood or other materials

which helps to distribute the load and prevent the fastener from loosening

and other applications where a watertight seal is required

12-24 x 3/4 Phillips Pan Thread Cutting Screw Type F Fully Threaded Zinc:

M3.5-1.57 x 14 Metric 6-Lobe Flat Head PT Alternative Fully Threaded Zinc & Bake 3WB The thread is designed toThe M3. 5 1. 57 x 14 Metric 6 Lobe Flat Head PT Alternative Fully Threaded Zinc & Bake is a high quality fastener designed for use in a variety of applications. It is made from durable zinc and bake materials, which provide excellent corrosion resistance and strength. The 6 lobe flat head design provides a secure hold and prevents the screw from slipping. The fully threaded design allows for maximum holding power and prevents the screw from loosening.