
Before its international release in 2022, the BLACK CLIP™ underwent over five years of field testing under harsh tropical conditions. This rigorous performance validation earned its Tropicalized certification, reflecting its ability to deliver outstanding strength, stability, and longevity in demanding environments.

BLACK CLIP™ by HEFTY FASTENERS is an invisible fastening system designed for hardwood decking. Combining stainless steel reinforcement with a fibre-reinforced polymer shell, it delivers strength, durability, and resistance to UV, moisture, and tropical conditions; while ensuring a clean finish with consistant spacing.

A: REINFORCEMENT PLATES
Marine-grade 316 A4 stainless steel with black oxide coating.
B: SHELL
Fibre Reinforced Plastic with black shell particles.

A: "KEYHOLE" DESIGN
Specially engineered to allow the screw to sink deeper for stronger anchoring.

A: NIBBLES
Aligned along the direction of the wood grain for improved grip.
B: AIR GAP
Promotes airflow and prevents liquid stagnation.

A: IN-BUILT SPACER
Prevents deformation or bending during screw installation and ensures consistent spacing.

Absorbs pressure to reduce board movement.

Can be installed in both directions for easier fitting and maintenance.

Ensures consistent 4 MM spacing and alignment.

Fast, easy and precise installation.

The BLACK CLIP™ SCREW is designed for high-performance outdoor use, featuring marine-grade A4 316 stainless steel for exceptional corrosion resistance. Its Torx drive ensures precise, high-torque fastening, while the tapered design reduces wood splitting and allows fast installation with minimal pre-drilling.
EMAIL US ON: OPHELIE@HEFTYFASTENERS.COM
WHATSAPP US ON: +230 5943 3000










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