Galvanized Butterfly Hollow Wall Anchors from China - Heavy-Duty Expansion Screws Suppliers & Factory Direct

Flange Anti-Slip Spikes – No Spinning During Installation

The flange bottom features dense anti-slip spikes that bite into drywall or surface layers during tightening, effectively preventing the anchor from spinning freely with the screw. Even under resistance or vibration, the spikes firmly grip the substrate, ensuring all torque converts into locking force rather than wasted on slipping – significantly improving installation success rates and efficiency, ideal for solo overhead work.

Extended Expansion Sleeve + Long Slots – Stronger Grip in Hollow Substrates

The extended expansion sleeve with long slots expands fully in hollow bricks, drywall, or aerated blocks, offering far greater contact area than ordinary short anchors – significantly increased holding power. Long slots ensure uniform expansion, avoiding localized stress concentration that could crack the substrate. The built-in pull-and-lock mechanism automatically triggers expansion during tightening – no extra steps, reliable anchoring that stays secure even under heavy loads or long-term vibration.

Assorted Heads/Hooks – One Anchor, Multiple Uses

One anchor compatible with multiple head types – Phillips, external hex, internal hex, and hook styles – matching different tools and installation preferences. No need to stock multiple models for various scenarios – simpler inventory management. Hook styles are perfect for hanging pictures, lamps, and tool racks without extra accessories. Whether for wall fixing or hanging, just one anchor handles all – greatly reducing part costs and selection time.