1 / 1
Self-tapping screws tap their own threads into a pre-drilled pilot hole, whereas self-drilling screws feature a drill-bit-style point that allows them to drill, tap, and fasten in a single operation without needing a pilot hole.
Yes, most standard self-tapping screws require a pre-drilled pilot hole. The size of the pilot hole should match the root diameter of the screw threads to ensure a secure, tight fit without stripping.
Stainless steel self-tapping screws offer exceptional corrosion resistance, durability, and strength, making them ideal for outdoor installations, marine environments, and high-moisture applications.
The EPDM rubber washer provides a watertight seal when compressed, preventing water leakage through the fastening hole. It also helps absorb structural vibrations and protects the metal sheet from being damaged.
Black self-tapping screws feature a black oxide or phosphate coating, which provides basic corrosion resistance and a sleek, non-reflective aesthetic finish suitable for electronic assemblies and automotive interiors.
Countersunk and flat head screws are selected when a flush finish is needed on the surface. Pan head and hex head screws sit above the material surface, offering greater clamping force and ease of installation with standard tools.
