Every PROKAHL fastener is manufactured under a managed quality system and verified against recognised construction standards — with documented mechanical and corrosion performance you can specify with confidence.
PROKAHL fasteners are produced and checked against the standards specifiers, inspectors, and contractors already trust.
Manufactured under a managed quality system — consistent process control from raw wire to finished box.
Production aligned to recognised environmental management practices and responsible processing.
Steel drill / self-piercing tapping screws for gypsum board — the benchmark for drywall fastener performance.
Coating corrosion resistance verified by salt-spray (fog) testing for documented durability.
Representative laboratory results for PROKAHL fasteners — torque, hardness, case depth, ductility, and corrosion resistance.
| Property | Result | Outcome |
|---|---|---|
| Torsional StrengthDrive torque to failure | 43.7kgf·cm | Pass |
| Surface HardnessVickers (HV) | 560HV | Pass |
| Case DepthCarburised surface layer | 48.8µm | Pass |
| DuctilityBend / deflection | 1.8mm | Pass |
| Salt-Spray (B117)No red rust at | 48h | Pass |
A hardened, carburised case gives the thread the bite and torque resistance to drive into steel without snapping — while a controlled core keeps the fastener ductile, not brittle.
Coatings are validated by salt-spray testing so the finish holds up in the real conditions BC jobs see. Results shown are representative; current certified figures are available on request for specification and submittals.
Request Test DataConsistent steel wire to specification, so hardness and strength start right at the source.
Heads, points, and threads formed to tolerance for clean starts and reliable engagement.
Carburising and finishing build the hardened case and the corrosion-resistant coating.
Torque, hardness, case depth, and salt-spray checks confirm every run meets the standard.
Everything your estimators and inspectors need to specify and approve PROKAHL fasteners.
Dimensions, sizes, box quantities, and performance across the PROKAHL range.
Download PDFMaterial grade, mechanical properties, coatings, and applicable standards.
Download PDFSafety, handling, and compliance information for PROKAHL fastening products.
Download PDFOur team can provide current test reports and documentation for specification and approval. Tell us the project and the SKUs.