King Chain Galvanized Screw Pin Anchor Shackle, Select Size
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King Chain Galvanized Screw Pin Anchor Shackle
Anchor shackles are the standard way to join a chain, cable or rope to a fitting. The bow shape gives room for more than one leg to sit in it without crowding, which is why anchor pattern is preferred over the narrower chain pattern for most rigging.
A screw pin shackle is for temporary connections. If the shackle will be left in place under a load that can rotate the pin, use a bolt-type shackle instead, because a screw pin can back out.
- Working load limits from 1/2 ton at 1/4 in. up to 3-1/4 ton at 5/8 in.
- Six sizes: 1/4, 5/16, 3/8, 7/16, 1/2 and 5/8 in.
- Bow pattern, so more than one leg fits without crowding
- Galvanized finish
- Screw pin, removable
Working load limits by size
| Size | Working load limit | Working load limit (lb.) |
|---|---|---|
| 1/4 in. | 1/2 ton | 1,000 |
| 5/16 in. | 3/4 ton | 1,500 |
| 3/8 in. | 1 ton | 2,000 |
| 7/16 in. | 1-1/2 ton | 3,000 |
| 1/2 in. | 2 ton | 4,000 |
| 5/8 in. | 3-1/4 ton | 6,500 |
Questions
What size shackle do I need?
Match it to the load, then to the chain or rope it joins. A 3/8 in. shackle carries 1 ton; a 1/2 in. carries 2 ton.
Should the pin turn or stay fixed?
Fix it. If the load can rotate the pin, it can unscrew. Use a bolt-type shackle with a nut and cotter pin for anything left in place or subject to movement.
Can I load it sideways?
A shackle loaded off the centreline of the bow loses capacity, and the reduction is steep. Keep the load in line, or apply the manufacturer's side-load reduction.
Can I replace the pin with a bolt?
No. The pin is matched to the shackle and a substitute will not carry the rating.
Is it for overhead lifting?
Treat it as general rigging hardware. Anything overhead needs equipment rated and marked for lifting, and the whole assembly rated at its weakest part.