Harken 57mm Aluminum Low Load Block Swivel
Pickup available at 1830 East Interstate 30
Usually ready in 24 hours
Shipping and Delivery
Free shipping for orders of $98 or more (US Continental)
- Free shipping for orders of $750 or more (International)
- Add 3 business days to the standard shipping time for USPS deliveries.
- UPS and FedEx Ground usually take 2 to 5 business days for in-stock orders.
- UPS and FedEx deliver on Saturdays only for Friday overnight shipments, which may incur an extra
charge. - Orders that apply for free shipping will be delivered between 8 and 10 business days.
- International customers will be responsible for any applicable import duties,fees, or taxes.
- Oversized items like whisker poles, spinnaker poles, and tracks over 7 feet require freight shipping, with an estimated cost of $500 depending on the destination.These orders must be delivered to a
commercial address, such as a marina, yacht club, or boatyard where your sailboat is located.
A recipient must be present to sign for the delivery upon arrival,For more info, Click Here.
Harken 57mm Aluminum Low Load Block Swivel
Harken 57mm Aluminum Low Load Block Swivel
Black Magic Air blocks are a top favorite of Big Boat performance racers and cruisers. These lightweight, free-running, powerful performers are used for sail controls that see lots of action: mainsheet, runner, halyard, and spinnaker systems. A center cage keeps Torlon roller bearings separated and parallel to reduce friction. Shackle blocks lock in two directions or swivel to keep line from twisting. Low-load blocks have red isolators. They use Torlon rollers and 316 stainless steel shackles. Standard blocks have 17-4 PH stainless headposts. Torlon is a registered trademark of Solvay Advanced Polymers L.L.C.
Technical Description
| Sheave Ø (mm) | 57 mm |
| Sheave Ø (in) | 2 1/4 in |
| Length (mm) | 119 mm |
| Length (in) | 4 11/16 in |
| Weight (g) | 154 g |
| Weight (oz) | 5.44 oz |
| Shackle pin Ø (mm) | 6 mm |
| Shackle pin Ø (in) | 1/4 in |
| Maximum line Ø (mm) | 12 mm |
| Maximum line Ø (in) | 7/16 in |
| Maximum working load (kg) | 750 kg |
| Maximum working load (lb) | 1655 lb |
| Breaking load (kg) | 1500 kg |
| Breaking load (lb) | 3300 lb |
