M20/M24 Stainless Steel A2 Eye Bolts – Threaded Ring for Catenary Wire & Hanging

Generally, the shank should pass fully through the material being fastened, with enough thread engagement to seat a nut flush. A common rule of thumb: shank length ≥ material thickness + 1.5× the bolt diameter. For example, a 100mm (≈3.94") shank typically suits timbers up to 80mm thick when paired with a nut and washer. If you're threading into a tapped hole or insert, aim for at least 1× the diameter in thread engagement depth.

Working load limits for A2 stainless steel eye bolts depend on the installation angle and load direction. Axial (in-line) loads are generally rated higher than angular loads. As a general principle, derate the WLL by at least 50% for loads applied at angles greater than 45° from the shank axis. For safety-critical overhead applications, always consult a structural engineer and verify the WLL for your specific size — contact us to confirm figures before ordering.

Yes, for most outdoor and light coastal applications. A2 stainless steel (304-grade equivalent) resists rust and surface oxidation well in rain, humidity, and mild salt air. For heavily salt-laden environments, continuous immersion, or submerged marine use, A4 (316-grade) stainless steel is generally recommended for longer service life without pitting.

These eye bolts use ISO metric coarse threads — M20 and M24. They are fully compatible with standard metric hex nuts, locking nuts, flat washers, and threaded inserts of the corresponding size. They are not compatible with UNC or UNF inch-thread hardware.

Yes — the closed-ring head is specifically suited for catenary wire hanging, overhead cable runs, and suspension rigging. The continuous loop keeps wire thimbles, shackles, and snap hooks securely seated. Verify that your wire or cable diameter fits within the ring opening (contact us for exact ring ID dimensions) and that the installation is rated for the intended load.

In most cases, a matching metric nut and flat washer are recommended (sold separately). The washer distributes clamping load across a wider bearing surface, reducing pull-through risk in softer materials like timber. For dynamic, vibrating, or shock loads, a nylon-insert locking nut or thread-locking compound is generally advisable to prevent loosening over time.

M20 (20mm / ≈0.79" diameter) is well-suited for medium-duty catenary wire hanging, timber framing anchors, and general overhead rigging where space is limited. M24 (24mm / ≈0.94" diameter) provides a larger ring aperture — accommodating thicker wire rope and larger shackle pins — and is typically rated for higher working loads. Choose M24 when your wire rope diameter or load requirement exceeds what M20 can comfortably handle.