#12 SD PRO ZMAX™ – No-Rust Self-Drilling Fastener for Metal-to-Metal Construction

#12 SD PRO ZMAX™ Fastener for Metal-to-Metal Framing

The #12 SD PRO ZMAX™ is a professional-grade self-drilling fastener designed for metal-to-metal construction. Featuring a 5/16″ Hex Washer Head (HWH) and TEK3/SD3 drill tip, this fastener powers through structural steel with consistent drive performance and clean thread engagement.

Its standout feature — a rust-resistant “No Red Rust” HWH — helps maintain finish integrity on exposed exterior projects. With a wide range of lengths from ¾″ to 2 ½″, this fastener supports a variety of panel overlaps, stitch connections, and steel framing needs.

Self-Drilling Fastener Specs

Head Type:

5/16″ Hex Washer Head (HWH)

Drill Tip:

TEK3 / SD3 self-drilling point

Available Lengths:

¾″, ⅞″, 1″, 1¼″, 1½″, 2″, 2½″

Corrosion Protection:

No Red Rust HWH finish

Material:

C1022 carbon steel

Recommended Use:

Pre-engineered metal buildings, stitch seams, and steel panel fastening

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