Heavy Duty and Rust Resistant
The open expansion hook is made of premium 304 stainless steel, which has undergone precision processing to ensure high hardness, toughness, and smooth surface. This hook is durable and not prone to rusting, making it suitable for both indoor and outdoor use, even in humid environments.
Great Value and Various Sizes
The package includes 30 pieces of M10 expansion screw hooks, which comprise hex bolts, thread rods, forging hook bolts, and forging eye bolts. The total length of the hook is 115mm (4.5 inches), with a sleeve pipe length of 42mm (1.7 inches) and an opening size of 20mm (0.8 inch). These hooks can hold approximately 320kg (705lbs) of weight.
Easy Installation with 14mm (0.56 inch) Hole
The drilled hole size for the expansion hook is 14mm (0.56 inch). To install, first drill the hole with a concrete bit, then place the expansion hook in the hole and tighten the hex nut with a wrench. Finally, tap the hook in gently with a hammer.
Important Notes and Tips
The open cup hook expansion bolts must be mounted on a relatively hard substrate and not on soft or unstable surfaces. Expansion is created by tightening a threaded bolt which draws a tapered cone, expanding a sleeve against the walls of the hole.
Wide Application and Excellent Stability
These open cup hook anchor bolts are versatile and can be used on block walls, concrete, and masonry. They also work well for patio sail cloth sun covers that are stretched tightly, providing excellent stability and support.