Home » Security Door Locks and Cylinders

First time replacing a security door lock? See the Security Screen Door Lock Buying Guide — six questions covering hinged vs sliding, complete kit vs body-only vs snib-only, double-wafer vs 4-pin C4 vs 5-pin commercial cylinder, hand of door, and six COLORBOND®-matched colours. AS 5039 / 5040 / 5041 compliant. Direct replacement for Whitco® (Tasman MK1, Leichhardt®), Lockwood® (8654 series), Doric®, Austral®, Brava®, Magic®, Yale® and Schlage®. All multi-pack cylinders keyed alike.

Upgrade your hinged or sliding security doors with high-quality locks built for Australian conditions. Our range includes cylinders, keys, and replacement locks compatible with major brands like Whitco, Lockwood, Austral, and Stegbar. Enjoy the convenience of keyed-alike systems, backed by a 10-year warranty and fast national delivery. Whether you're securing a new build or replacing an existing lock, Tradebase has the solution.