Rigging Hardware

Lifting hook and lifting shackle: the two connections on every lift

The lifting hook closes the top of the system, hanging from the hoist or crane, and the lifting shackle closes the connections below, joining sling legs, master links and load points. Both are small, heavily worked and inspection-critical. Hooks are judged by throat opening, latch condition and swivel behaviour; shackles by body form, bow or dee, and pin style. A distributor who stocks both in sensible depth sells the completion of every lifting job, not just its headline equipment, and keeps customers from improvising connections with whatever is on the shelf.

Selection inside both items turns on the connection geometry rather than catalogue habit. A hook must accept the master link or sling eye it will carry without side loading. A shackle must suit the angle its legs will form, with bow forms forgiving of multi-leg work and dee forms suited to straight pulls. Those are the questions the rigging shackles guide develops for the shackle family; the same logic applies at the hook, and stating the connection the item must make is the most useful line in a hardware inquiry.

Turnbuckle, eye bolt and screw pin shackles in the same order

A turnbuckle tensions and trims: guys, stays, lashing points and any line whose length must be adjusted after installation. An eye bolt provides the fixed point, screwed into structure or machinery so a sling or shackle has somewhere honest to attach. Screw pin shackles are the everyday closers, opened and closed by hand where connections change often. Together they form the small-hardware basket that rigging customers reorder constantly, and a range that omits them sends that reorder business elsewhere.

Ordering discipline matters more than brand here. State the thread or pin sizes your market uses, the forms, jaw, eye or hook ends on turnbuckles, collar style on eye bolts, and quantities per size, because hardware is a matrix business: many sizes, steady quantities, frequent repeats. Ask how items are marked and packed per size, so your own bins and your customers' kits stay legible. Ratings belong to the individual item's marking and documents, and buyers should confirm them per item in writing rather than reading across from a neighbouring size.

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