Metric Eye Bolt & Hook Screw — Stainless Steel, M4–M24, Standard & Left Hand Thread

Match the bolt diameter to your tapped hole or nut size. For example, M8 (≈5/16" diameter) is generally suitable for light-duty hanging loads, while M16 (≈5/8") and above are typically used for heavier rigging. Always verify the thread pitch matches your application — each size in this listing shows the corresponding pitch (e.g., M8 = 1.25mm pitch). If you're drilling and tapping your own hole, use the standard tap drill size for that metric diameter.

Load capacity varies by size and installation method. In general, a properly installed M8 stainless eye bolt can typically handle several hundred pounds of vertical load, while M16–M24 bolts are rated for significantly higher working loads. Always consult an engineer for safety-critical lifting applications and never exceed the rated working load limit. Side-loading (angular loading) typically reduces capacity — use a shoulder-style eye bolt for angled loads.

Yes. These fasteners are made from stainless steel, which provides strong resistance to rust, oxidation, and salt-air corrosion. They are generally well-suited for outdoor decks, pergolas, coastal installations, and marine environments. For prolonged submersion or highly aggressive chemical environments, confirm the specific stainless grade meets your requirements before installation.

Standard (right-hand) thread tightens clockwise and is the most common type used in everyday fastening. Left-hand thread tightens counter-clockwise and is used in applications where rotation could loosen a standard bolt — such as on rotating shafts, turnbuckles, or specialized machinery. A common example is the left pedal on a bicycle. Select the thread direction that matches your existing hardware or application requirement.

These bolts follow the ISO metric coarse thread standard, which is the international standard used across Europe, Asia, and increasingly in North America. The thread pitch for each size is listed in the variant options (e.g., M6 = 1.0mm pitch, M10 = 1.5mm pitch). They are not compatible with UNC/UNF (inch-based) threads — if your application uses inch threads, please contact us before ordering.

An eye bolt has a fully closed circular loop at the head, making it ideal for attaching ropes, cables, carabiners, or shackles securely — nothing can slip out accidentally. A hook screw has an open J-shaped hook, which allows quick attachment and detachment of items like chains, hanging baskets, or swing hardware without threading anything through the loop. Choose the eye bolt for permanent or load-bearing connections, and the hook screw for convenience and frequent attachment/detachment.

Pack quantity depends on the size selected. Smaller sizes (M4–M6) are available in packs of 5, which is convenient for multi-point installations like hanging a row of lights or anchoring a shade sail at multiple corners. Mid-range sizes (M8–M10) come in packs of 2. Larger sizes (M12–M24) are sold individually (1 piece per pack). The pack quantity is clearly shown in the variant selector before you add to cart.