Tetra 4 way Expansion Plug

Tetra 4 Way Expansion Plug is a heavy-duty nylon fixing designed to deliver dependable anchorage in solid brick, dense concrete, lightweight blockwork and general masonry substrates. Its four-way expansion body compresses uniformly when the screw is tightened, producing a stable hold that resists pull-out, vibration and substrate damage.

The high-strength polymer composition prevents cracking or deformation under torque, maintaining consistent expansion even in harder base materials. Anti-rotation fins lock the plug in place during screw insertion, helping users achieve clean, accurate alignment across structural, mechanical and electrical fixings. Suitable for large-gauge screws, the plug provides a professional-grade fixing solution for heavy brackets, rails, trunking, clamps and permanent installations.

Installation Guide:

• Drill a hole to the correct diameter and depth using a masonry drill bit
• Remove dust and debris to ensure clean seating and full expansion
• Insert the plug flush with the wall surface and tap gently into position
• Fix with a compatible screw, tightening until the plug expands and grips evenly
• Avoid overtightening to maintain substrate integrity