M12–M30 A2 Stainless Steel Lifting Eye Bolts with Nuts and Washers

Match the shank diameter (M12, M14, M16, etc.) to your threaded hole or nut size. For length, choose a shank long enough to achieve at least 1.5× the bolt diameter in thread engagement depth — for example, an M12 bolt typically needs at least 18mm (≈0.7") of thread engagement for a secure hold. Longer shanks (100–200mm / ≈4–7.9") are generally used when passing through thick material or when the nut-and-washer assembly must bear on the back face of a panel or beam.

Working load limits vary by diameter and lifting angle. As a general guideline, M12 eye bolts typically support around 200–300 kg vertically, while M20 and larger sizes can handle significantly more. Always derate capacity when lifting at an angle — loads applied at 45° can reduce rated capacity by up to 70%. For critical lifting applications, consult a qualified structural or rigging engineer and verify against the specific bolt's rated WLL.

Yes, A2 stainless steel (304-equivalent) offers good corrosion resistance in most outdoor environments, including light coastal exposure and humid conditions. For heavily salt-laden marine environments or continuous immersion, A4 (316 grade) stainless is generally recommended for longer service life. These bolts are a solid choice for dock hardware, outdoor rigging, and trailer anchor points in typical US climates.

These eye bolts use standard ISO metric coarse threads (e.g., M12×1.75, M16×2.0, M20×2.5). They are compatible with standard metric hex nuts, threaded inserts, and tapped holes following ISO 261/262 specifications. They are not compatible with UNC or UNF inch-thread hardware — if your application uses SAE/imperial fasteners, you will need an adapter or a different bolt series.

Standard eye bolts without a shoulder (collar) are generally rated for vertical, in-line loads only. For angled lifting or side-loaded rigging, a shoulder (collar) eye bolt is typically required, and load capacity must be derated based on the angle. If your rigging involves pulls at 30°, 45°, or 60° from vertical, confirm the bolt style and apply the appropriate derating factor per ASME B30.26 or your applicable standard before use.

Each unit includes one eye bolt, one matching hex nut, and one flat washer — a complete fastener set ready for installation. Quantity is sold per piece (1 Pcs). To order multiple sets, simply increase the quantity at checkout.

Thread the eye bolt into a tapped hole or pass it through a clearance hole, then secure with the included nut and washer on the back side. Tighten to the appropriate torque for the bolt size — generally 40–80 Nm for M12–M16 in structural applications, higher for larger diameters. Before final tightening, orient the eye ring in the direction of the intended load. After installation, inspect the connection for thread engagement depth and ensure the nut is fully seated against the washer and bearing surface.