8-18 x 3/4 Square Drive Pan Self Drilling Screw Full Thread Black Oxide 1 1/4-12 NTE They are made of steel

They are made of steel and have a black zinc and wax finish for corrosion resistance

while the oval head provides a smooth

The 6-lobe pan head has a low profile and a hex socket drive

The 1/4-14 x 1 Phillips Flat Self Drilling Screw Full Thread Black Oxide & Oil is a versatile and durable fastener designed for various applications

This screw is also heat treated for increased strength and durability

8-18 x 3/4 Square Drive Pan Self Drilling Screw Full Thread Black Oxide 1 1/4-12 NTE They are made of steelThese 8 18 x 3 4 inch square drive pan self drilling screws with full threads and a black oxide finish are designed for use in metal applications. The self drilling point eliminates the need for pre drilling, making installation quick and easy. The square drive head provides a secure grip for driving, and the full threads provide maximum holding power. The black oxide finish offers corrosion resistance and a professional appearance.