My Account
Shopping Cart

Schaefer Marine 504-82 Spring Loaded Genoa Lead Block 1-Inch T-Track Slider

Manufacturer

Schaefer Marine

<h3>About Schaefer Marine</h3><p>Founded in 1966 and headquartered in <strong>New Bedford, Massachusetts</strong>, Schaefer Marine has spent decades earning a reputation as one of the most trusted names in sailboat hardware. Whether you sail a small dinghy or a bluewater passage-maker, the brand's commitment to engineering products that can withstand the relentless forces of wind and sea has made it a go-to choice for racing sailors and cruisers alike.</p><p>What distinguishes Schaefer Marine from the competition is a no-compromise philosophy toward materials and design. Every product in the lineup — from travelers and furling systems to cleats, shackles, and mast hardware — is conceived with a real-world understanding of the loads a sailing vessel generates. The result is hardware that performs smoothly under pressure and keeps performing long after less-robust alternatives have been retired.</p><h3>Blocks &amp; Pulleys: The Heart of Sail Trim</h3><p>Schaefer Marine's <a href="/14859-schaefer-marine-pulleys-blocks-200822">Pulleys &amp; Blocks</a> are among the brand's most celebrated product lines. The flagship <strong>M-Series blocks</strong> feature Torlon&trade; rollers and Delrin&trade; ball bearings housed in machined aluminum bodies, delivering a smooth, low-friction ride that sail trimmers notice immediately. The range spans everything from simple fixed blocks to ratchet and swivel variants, covering boats of every size. For sailors looking to refine their sheet and halyard systems, Schaefer's <a href="/14859-schaefer-marine-pulleys-blocks-202394">block and pulley selection</a> offers a variety of configurations purpose-built for efficient sail control.</p><h3>Eye Straps &amp; Pad Eyes: Secure, Reliable Deck Fittings</h3><p>Deck attachment points endure some of the highest stress loads on any sailboat, which is why Schaefer Marine invests heavily in the quality of its <a href="/14859-schaefer-marine-eye-straps-pad-eyes-201942">Eye Straps &amp; Pad Eyes</a>. The brand offers cast and welded pad eyes machined from high-quality Type 316 stainless steel, along with stamped eye straps crafted from Type 304 stainless — all paired with corresponding backing plates for secure, load-spreading installations. Whether securing a block, lashing a line, or anchoring deck equipment, these fittings are engineered to hold.</p><h3>A Full Ecosystem of Sailing Hardware</h3><p>Beyond blocks and deck fittings, Schaefer Marine produces a comprehensive catalog that includes jib furlers, mainsail travelers, cam cleats, snap shackles, Tuff Luff foil systems, winch handles, and mast hardware. The brand also partners with SeaSure (UK) for rudder hardware and the Hawk Wind Indicator range, rounding out an ecosystem that can outfit virtually any sailboat from deck to masthead.</p><p>Standard catalog products from Schaefer Marine are backed by a <strong>ten-year warranty</strong> against factory defects in material and workmanship — a statement of confidence that reflects the brand's long-standing focus on building hardware that lasts. For sailors who demand proven reliability in demanding conditions, Schaefer Marine continues to set the benchmark.</p>

Part Number

504-82
06/21/2036 3:26 PM
Sale Price

$208.84

In Stock (5)

delivery box

Usually delivered within 2 days

free shipping

FREE SHIPPING

Authorize Seller Badge
No Hassle Returns

No Hassle Returns

Live-in-stock inventory

Live-in-stock inventory

Fitment guaranteed

Fitment guaranteed

Product Details

The Schaefer Marine 504-82 is a spring-loaded genoa lead block designed for precise sail control on boats up to 27 feet. This high-performance block features a spring-loaded mechanism that allows quick, tool-free adjustments along 1-inch T-track, making sail trimming effortless while under way.

Key Features:

  • Delrin™ plain bearing sheave for smooth operation and minimal friction
  • Anodized aluminum cheeks for lightweight strength and corrosion resistance
  • Stainless steel slider with polyethylene liner for smooth track movement
  • Spring-loaded design with pin stop for easy one-handed adjustment
  • 2-inch sheave diameter accommodates line up to 7/16 inch
  • Safe working load of 1,750 lbs with only 7 oz weight

Technical Specifications:

  • Track Size: 1" x 1/8" (25mm x 3mm) T-track
  • Maximum Boat Length: 27 feet (8m)
  • Maximum Boat Weight: 5,000 lbs (2,270 kg)
  • Sail Area Capacity: 315 sq ft (29 m²)
  • Sheave Diameter: 2" (51mm)
  • Maximum Line Diameter: 7/16" (11mm)
  • Dimensions: 3"L x 1-1/4"W x 4-5/32"H
  • Bearing Height: 2-7/32" (56mm)
  • Safe Working Load: 1,750 lbs (795 kg)

Ideal for genoa sheet control, this block combines the reliability of Schaefer's proven hardware with the convenience of spring-loaded adjustment, making it perfect for cruising sailors who need to adjust lead positions quickly and safely.

Had what I needed

Would do business again with them in a heart beat.

Ordering was easy. Has not shipped yet.

Product was good and exactly what I ordered, but I expected it in 2 days as advertised on the website.

Was great and easy

Very good thanks

Good

Fast service good price

difficult to locate the exact part - no measurements available.

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