About Ensat Self Tapping s: Self-tapping s (also known as self-threading s or Ensats) have internal and external threads, and are designed to cut their own threads as they are being driven a drilled hole. The thread cutting action is performed by the cutting slots on the Ensat. By tapping its own thread, the Ensat self tapping eliminates the need for pre-tapped holes. Ensat Self Tapping Features: - Self tapping - no pre-tapping required - Very high pull out strength Ensat Self Tapping Materials: - Stainless steel - Rust proof steel - Zinc-plated, yellow chromated brass