D-Shackle M12–M19 — A4 316 Marine Grade Stainless Steel
D-Shackle M12–M19 — A4 316 Marine Grade Stainless Steel
Heavy-duty D-shackles in A4 (AISI 316) marine grade stainless steel, in the larger pin diameters — M12, M13, M16 and M19. Straight D-profile with a captive screw pin, for high in-line loads on rigging, moorings, lifting and towing. Manufactured to ART. 8258.
Specifications
| Size | D (mm) | A jaw (mm) | L inside (mm) | B outside (mm) | Working load | Breaking load |
|---|---|---|---|---|---|---|
| M12 | 12 | 24 | 42 | 48 | 600 kg | 5,550 kg |
| M13 | 13 | 26 | 45 | 52 | 800 kg | 6,550 kg |
| M16 | 16 | 32 | 55 | 64 | 1,100 kg | 7,600 kg |
| M19 | 19 | 38 | 66 | 76 | 1,600 kg | 9,950 kg |
D is the body and pin diameter, A the jaw opening, L the inside length and B the outside width. Manufacturer's figures, indicative and subject to minor variation between production batches.
Supplied by the box
- M12 — box of 5 · £27.50 (£5.50 each)
- M13 — box of 10 · £102.50 (£10.25 each)
- M16 — box of 5 · £71.25 (£14.25 each)
- M19 — single unit · £22.25
Ordered in to your requirement rather than held on the shelf — please allow up to 2 weeks for delivery. If you need one or two shackles today, our M4–M10 D-shackles are in stock for same-day dispatch in singles, packs of 4 and packs of 10. M22 and M25 are available to order — ask us.
Why A4 316
A4 contains added molybdenum, which resists the chlorides that cause pitting corrosion in salt water and salt-laden air. On rigging and lifting hardware that matters more than anywhere else — pitting eats into the shank from a single point and the shackle can fail under load with no rust streak to warn you. See our guide to choosing between A2 and A4.
Before you use these for lifting
The working load limit already carries the manufacturer's safety factor — roughly 6:1 to 9:1 against the breaking load across this range. Never exceed the working load limit, and never treat the breaking load as a working figure. Tighten the pin fully, load along the axis of the bow, and never side-load a shackle across the jaw. Stainless is chosen for corrosion resistance rather than outright strength; a galvanised steel shackle of the same diameter will carry more.
Delivery
Up to 2 weeks on these sizes. Free UK delivery on orders over £20 — which every box qualifies for.
