Hook bolt ALPAR S3022 M20 L-250 hot-dip galvanized

ALPAR hook bolt S3022 M20 L-250 hot-dip galvanized is a threaded fastener with an integral hook and a 250 mm overall length designed for anchoring, suspension and securing components in structural and mounting applications. The M20 metric thread accepts standard M20 nuts and washers, while the hot-dip galvanized finish provides a uniform zinc coating that increases corrosion resistance for outdoor and industrial environments. The hook profile allows for quick engagement with cables, chains, eyelets or hollow sections where a bolted eye would be impractical.

Advantages

The hot-dip galvanized surface offers durable protection against rust and weathering, extending service life in exposed conditions. A standard M20 thread ensures compatibility with commonly available nuts and washers for straightforward assembly. The 250 mm length provides sufficient embedment or reach for many mounting situations, and the formed hook end simplifies fastening tasks without requiring additional specialized hardware.

Suitable for (tasks / use cases)

• Anchoring small structural elements and brackets
• Suspending pipes, conduits or cable runs
• Securing chain, wire rope or slings to fixed points
• Outdoor fixtures and assemblies exposed to moisture
• Industrial mounting where hooked attachment is needed

Key specifications

• Thread size: M20 (metric coarse thread)
• Total length: 250 mm
• End style: formed hook
• Surface finish: hot-dip galvanization (zinc coating)
• Material: steel (hot-dip galvanizable)

How to use

Select compatible M20 nuts and washers to pair with the hook bolt. Drill or prepare the mounting hole or anchor point to accept the bolt length and hook orientation. Insert the threaded shank into the prepared hole or through the mounting plate, then secure with a nut and washer tightened to an appropriate torque for the assembly. Use the hooked end to engage the item to be secured, ensuring the load is positioned so the hook is not overloaded or subject to unintended bending. For overhead suspensions, verify the attachment method and load capacity before placing service loads.

Usage recommendations

For best corrosion resistance, inspect the galvanized coating after fabrication or cutting and touch up exposed areas with an appropriate zinc-rich repair paint. When used in structural or load-bearing applications, follow relevant standards for bolt torque and safety factors, and confirm compatibility with the mounting substrate. Replace bolts that show significant deformation, severe corrosion or thread damage.