Our mechanical coatings comply with the following Australian standards:

• AS 3566.2–2002 – Self-drilling screws for the building and construction industries Part 2: Corrosion resistance requirements

• AS 2331.1.1–2001 – Methods of test for metallic and related coatings

Coating composition requirements for Class 3 mechanical coating:

• 20–30% Tin balance Zinc

• Minimum local metallic coating thickness: 25 µm

Coating composition requirements for Class 4 mechanical coating:

• 25–30% Tin balance Zinc

• Minimum local metallic coating thickness: 45 µm

Coating Standard & Technical Specifications

Certifications

1. Class 3 mechanical coating test certification from SGS

2. Class 4 mechanical coating test certification from SGS

Test Equipments

To ensure the performance and quality of our fasteners, we are equipped with a comprehensive range of testing equipment. These advanced tools allow us to perform strict quality control throughout the production process — from raw material inspection to final product validation — ensuring every batch meets required standards such as AS 3566.

Used to measure the drilling time of self-drilling screws into steel plates. This is the most critical test for evaluating drilling performance and consistency.

Drill Test Machine

Tensile Test Machine

Used to measure the tensile and shear strength of screws. It ensures the fasteners meet mechanical performance requirements for structural applications.

Used to measure the surface hardness of screws with high precision.Ensures proper heat treatment and material consistency.

Vickers Hardness Tester

2.5D Profile Projector

Used to inspect the dimensions and thread profile of screws with high accuracy. Ideal for verifying head shape, thread pitch, and point geometry during quality control.

Salt Spray Test Machine

Used to evaluate corrosion resistance of coatings under accelerated conditions. Essential for testing compliance with AS 3566 Class 3 and Class 4 standards.

Metallograph Microscope

Used to analyze microstructure and measure coating thickness on cross-sections of screws.Ensures compliance with required plating thickness and quality standards.

Pull-out Tester

Used to measure the pull-out strength of screws in various materials, such as steel sheets of different thicknesses and different types of wood.

Used to determine the maximum torque a screw can withstand before failure, ensuring its mechanical strength meets required standards.

Breaking Torque Test Machine

Micro Hardness Test Machine

Used to measure the surface hardness of small or thin samples with high precision, such as screw tips or coating layers.