Name: Harken 3221 57mm Single Black Magic High-Load Air Block Lockoff Footblock
Brand: Pacific Sailboat Supply
SKU: 395036
Price: 234.88 USD
Availability: InStock

HARKEN

Black Magic® Aluminum Lockoff Footblock - 57mm NEW!

The entire line of Black Magic® AirBlocks® has been redesigned with a sleek new look. Their unique, performance-packed engineering remains exactly the same.

Carrying some of the highest loads imposed by running rigging, this strong, lightweight block features Torlon® roller bearings housed in a center cage. Rollers stay parallel for low-friction efficiency. Sculpted hardcoat-anodized aluminum side plates protect sideload ball bearings. Dissimilar metals are isolated to minimize corrosion. This block is easily disassembled with a single hex wrench.

Either metric or imperial flathead fasteners may be used for mounting and are not exposed.

Use for:

Genoas
Spinnakers

Specifications:

Sheave Diameter - 57mm (2-1/4")
Max Line Diameter - 7/16" (12mm)
Fasteners - 4 x 1/4" (6mm) FH

Mfg No.	Description	Length	Height	Max Working Load	Breaking Load	Weight
3221	Single lockout / high-load	3-5/16" (84mm)	1" (25mm)	2500 Lbs (1134kg)	5000 Lbs (2268kg)	5.44oz. (154g)

At Pacific Sailboat Supply, we’re passionate about what we do, and our primary goal is elevating your sailing and boating experience. We cater specifically to racers and enthusiasts of high-performance sailing, offering a meticulously curated selection from over 300 premier marine brands. Our website features less than 5% of our available products, ensuring only the finest sailboat rigging, hardware, electronics, and more make the cut.

But our expertise doesn’t stop with sailboats. We also provide top-quality supplies for powerboats. If you don’t find exactly what you’re looking for, our team is ready to assist you. Reach out via email, chat, phone, or directly through our website messaging service. At Pacific Sailboat Supply, we’re here to help you navigate your sailing and boating needs with excellence.