My Account
Shopping Cart

Harken 417 16mm Single Block with Swivel

Manufacturer

Harken

<h3>About Harken: Performance Marine Hardware Since 1967</h3><p><strong>Harken</strong> is one of the most recognized names in performance marine hardware, with a legacy stretching back to 1967. <a href="/14853-harken">Harken</a> was founded in a 60-foot trailer by brothers Peter Harken and Olaf Harken, who set out to engineer better sailboat hardware than anything the market had to offer. Their early breakthrough — the plastic recirculating ball bearing block — redefined how sailors managed lines under load and launched a brand that would go on to dominate competitive sailing at the highest levels.</p><p>Headquartered in Pewaukee, Wisconsin, and with a major manufacturing facility in Limido Comasco, Italy, Harken operates as an employee-owned company with distribution spanning 48 countries. From club racing dinghies to grand prix offshore programs, Harken hardware has been aboard winning boats for decades — making its Olympic and America's Cup debuts in 1976 and 1977, respectively.</p><h3>A Full Range of Marine Hardware</h3><p>Harken's product lineup is broad by design. The company works hard to be the technological leader in sailboat blocks, deck hardware, winches, and hydraulics, as well as safety and rescue equipment and services. Their marine catalog includes small boat and big boat blocks, travelers and genoa leads, mainsail and headsail handling systems, winches, hydraulics, mooring solutions, and a robust line of spare parts and accessories.</p><p>At the core of it all are Harken's renowned <a href="/14853-harken-pulleys-blocks-200822">Pulleys &amp; Blocks</a> — the product category that started it all. Whether you're outfitting a high-tech racing dinghy or a bluewater cruising yacht, Harken blocks are engineered for high-load capacity, corrosion resistance, and the smoothest possible operation. The lineup spans sheave sizes from 16 mm all the way to 75 mm, with single, double, triple, fiddle, and soft-attach configurations to cover virtually every application on deck.</p><p>Beyond sailing, Harken also produces a dedicated line of sportfishing <a href="/14853-harken-pulleys-blocks-202394">Pulleys &amp; Blocks</a> engineered for the unique demands of offshore fishing. These compact, high-load pulleys are built for outrigger systems, dredge rigging, and heavy-duty line management — bringing the same patented bearing technology that excels on race courses to the rigors of the fishing cockpit.</p><h3>Why Sailors Trust Harken</h3><p>What sets Harken apart is a relentless commitment to engineering. Each product category is developed with input from top sailors, sailmakers, and boat designers — and the results speak for themselves on race courses worldwide. Harken hardware is a consistent fixture on America's Cup campaigns, Volvo Ocean Race fleets, Olympic classes, and everything in between. For cruisers, that race-proven performance translates into gear that is more reliable, longer-lasting, and more responsive than the alternatives.</p><ul><li>Employee-owned company with decades of marine engineering expertise</li><li>Manufacturing in the USA and Italy, with global distribution in 48 countries</li><li>Patented bearing systems engineered for high loads and minimal friction</li><li>Product lines covering everything from small dinghies to superyachts</li><li>Trusted at the Olympic Games and America's Cup since the 1970s</li></ul>

Part Number

417
06/02/2036 6:19 PM
Sale Price

$23.63

In Stock (10+)

delivery box

Usually delivered within 2 days

Authorize Seller Badge
No Hassle Returns

No Hassle Returns

Live-in-stock inventory

Live-in-stock inventory

Fitment guaranteed

Fitment guaranteed

Product Details

The Harken 417 16mm Single Block with Swivel is a compact, high-performance block designed for small synthetic control lines on high-tech dinghies and sailing applications. Despite its tiny 5/8" sheave diameter, this block delivers exceptional strength-to-weight ratios through Harken's unique patented bearing system.

Key Features:

  • Patented bearing system with stainless steel balls in a captive, grooved race for smooth operation
  • Polished 316 stainless steel top strap with integrated swivel for versatile rigging options
  • Sheave diameter: 5/8" (16mm) optimized for small control lines
  • Maximum line diameter: 7/32" (5mm)
  • Maximum working load: 250 lbs (113 kg)
  • Breaking load: 750 lbs (339 kg)
  • Extremely lightweight design with outstanding strength-to-weight ratio

The swivel attachment point provides freedom of movement and prevents line twist, making this block ideal for mainsheet systems, cunninghams, outhauls, and other high-load control lines on performance sailboats. Part of Harken's renowned 16mm block series, known for reliability in demanding marine environments.

Products specifications

Type

Single

Diameter

3/16 Inch or 5 mm

Length

1 13/16 Inches

Mount Type

Swivel Shackle

Weight

.63 Ounces

Ball Bearings

Stainless Steel

Becket

No Becket

Direction

Any

Integral Cleat

No Integral Cleat

Ratchet

Non Ratcheting

Safe Working Load

250

Sheave Diameter

16 mm

l

Awesome

easy to order....I didn't see a ship date....did I miss this somewhere while ordering?

Easy to navigate

this was a good experience all the way around. I ordered a Warn snatch block for my winch and it got here really fast and the cost was very reasonable.

Some of the EBC brake kits do not have dimensions in the product details.

Share icon
Return Policy
Returns are easy at Boatplicity

Not happy with a purchase? No problem. We've made returning items as easy as possible. And most purchases can be returned for free for 30 days. Learn more about our Returns Policy