TB1-PLUS 12/50x135 Throughbolts zinc plated 25 pack 12/55x135

The TB1-PLUS 12/50x135 galvanized through-bolt anchors are engineered for professional, heavy-duty applications in both cracked and uncracked concrete. Fully ETA Option 1 approved and seismic-rated (C1), they offer exceptional load capacity and long-term reliability for structural fixings. Their tapered, thread-free head allows hammer insertion without thread damage, while the hardened stainless steel expansion clip ensures corrosion-resistant strength where loads are transferred. Depth markings prevent installation errors, making these anchors ideal for through-hole mounting in safety-critical or high-load environments.

Key Features & Benefits

• Universal heavy-duty expansion anchor for concrete applications
• ETA Option 1 approval for cracked and uncracked concrete
• Seismic category C1 approval (Ø12 & Ø16)
• Ideal for quick, accurate through-hole installation
• Continuous thread for flexible mounting configurations
• Tapered, thread-free head prevents thread damage during hammering
• Unique high-load expansion clip design
• Hardened stainless steel spreading clip for corrosion resistance in load-bearing zone
• Clear depth markings to ensure correct installation
• Very high certified load capacities with F120 fire approval
• Compatible with Sympafix DesignFix software for fast structural calculations