6-19 x 1/4#5HD Phillips Truss High Low Screw Fully Threaded Zinc 1/4-10 and the split washer helps

and the split washer helps to create a tight seal

The 6-lobe drive ensures easy installation and prevents cam-out

which means that it can create its own threads in the material that it is being fastened into

or general maintenance

8-18 x 3/8 Phillips Flat Undercut Thread Cutting Screw Type 25 Fully Threaded Zinc:

6-19 x 1/4#5HD Phillips Truss High Low Screw Fully Threaded Zinc 1/4-10 and the split washer helps**6 19 x 1 4#5HD Phillips Truss High Low Screw Fully Threaded Zinc** This screw is designed for high performance fastening applications. It features a #5 Phillips drive head for secure driving, a truss head for a flush finish, and a high low thread design for exceptional holding power. The 1 4" diameter and 6 19 thread pitch provide optimal strength and versatility. Made from durable zinc plated steel, this screw resists corrosion and wear, ensuring