M3 M4 M5 Stainless Steel Eye Bolts Ring Screws – Metric Wire Fencing Tension Screws

Match the thread diameter (M3, M4, or M5) to your tapped hole or nut size. For length, measure the depth of the material you're threading into and add typically 1.5x the thread diameter for adequate engagement. For example, an M4 bolt threading into 10mm of material generally needs at least 6mm of thread engagement. When in doubt, size up on length — you can always use a nut to limit depth.

Working load limits vary by size and installation method. M3 eye bolts are generally suited for light-duty applications (typically under 10 kg), M4 for moderate loads, and M5 for heavier rigging tasks. Always apply a safety factor of at least 4:1 and never exceed the rated working load. For critical load-bearing applications, contact us to confirm specifications.

Yes. Stainless steel provides strong resistance to rust and oxidation, making these generally suitable for outdoor, coastal, and light marine environments. For fully submerged or highly aggressive saltwater applications, the specific alloy grade matters — contact us to confirm suitability before ordering.

These use the metric ISO thread standard. M3, M4, and M5 refer to the nominal thread diameter in millimeters. They are not compatible with UNC or UNF imperial threads. If your project uses inch-based hardware, these will not fit.

Yes — the closed ring head is specifically designed for threading wire, cable, or rope through for straining wire fencing, garden trellis tensioning, and rigging anchor points. Before ordering, verify that your wire gauge fits through the eye opening of the size you select.

In most cases, no special tools are required. These can be threaded by hand into a pre-tapped hole or onto a nut. For higher torque, pass a rod, screwdriver, or bolt through the eye loop to gain leverage. A wrench on a mating nut can also be used to lock the bolt in position.

Yes. Each listing offers quantity options from 1 piece up to 80 pieces per order. Select your preferred size and quantity from the variant selectors above. Per-unit cost generally decreases at higher quantities.