The S-320AN is a staple in the Crosby line of hooks that utilizes the "new" style S-4320 Latch Kit
(sold separately). The larger sizes 30T - 60T are the S-320A model that take the "old" style SS-4055 Latch Kit
(sold separately). It's made from forged alloy steel and is quenched and tempered for maximum durability. This hook is suitable for use with wire rope and / or chain slings (see product specification sheet for full details), and replacement safety latches are readily available. If you need a hook to use with Grade 80 or Grade 100 chain, then check out the Crosby S-1327 Eye Sling Hook
. It has an almost identical frame yet it mates directly to your chain with a clevis pin (be sure to match the hook and chain size) and is properly rated to keep you compliant with OSHA regulations regarding chain slings and fittings.