Our self-tapping screws are manufactured with a cross recess (Phillips) drive, conforming to ASB 194 standards, and are available in three common head styles — countersunk (CSK) for flush finishes, pan head for general-purpose fastening, and raised head where a decorative or slightly domed finish is needed. This range covers most sheet metal, plastic, and light assembly needs without requiring a custom tool change for the customer.

Material & Strength

We use SAE 1015, SAE 1018, 10B21, and 15B25 grades of steel depending on the strength and application requirement specified by the customer. After forming, every screw undergoes a hardening and tempering process, which is what gives self-tapping screws their key characteristic — a hard enough tip and thread to cut into the base material, while still retaining enough toughness in the body to resist snapping under torque. Getting this balance right is one of the more technical parts of self-tapping screw manufacturing, and it's an area we control closely through our heat treatment process.

Coatings for Corrosion Resistance

To match different environmental and application needs, we offer the following coating options:

• Zinc Phosphate — for basic corrosion resistance and improved paint or coating adhesion.
• Manganese Phosphate — adds extra wear resistance, making it suitable for applications where the screw is exposed to repeated friction or movement.
• Zinc Electroplating (Hexavalent or Trivalent Chrome) — provides a clean, bright finish along with excellent corrosion protection, making it a preferred choice for automotive and electrical assemblies.
• ZAC (Zinc Aluminium Flake Coating) — offers the highest level of corrosion resistance among our coating options, ideal for outdoor and harsh-environment applications without the risk of hydrogen embrittlement associated with electroplating.