8-18 x 3/8 Square Drive Pan Self Drilling Screw Full Thread Zinc MW These lock washers are designed

These lock washers are designed to prevent nuts and bolts from loosening due to vibration or movement

7 x 20 ISO14583 Metric 6-Lobe Pan Machine Screw Full Thread A2 Stainless Steel is a high-quality fastener designed for use in various industrial and commercial applications

including attaching metal roofing and siding

while the fine thread ensures a secure hold

8-18 x 3/8 Square Drive Pan Self Drilling Screw Full Thread Zinc MW These lock washers are designedThese 8 18 x 3 8 square drive pan self drilling screws are full thread and zinc plated. They are designed for use in metal applications and have a sharp point that drills its own hole. The square drive head provides a secure grip for driving. These screws are available in a variety of lengths and finishes to meet your specific needs.