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Attwood Marine ST33-40-5 Stainless Steel Gas Spring 8mm Rod 15" Extended 9.5" Compressed 40lb

Manufacturer

Attwood Marine

<h3>About Attwood Marine</h3><p><strong>Attwood Marine</strong> has been a cornerstone of the boating world for well over a century. <a href="/7239-attwood-marine">Founded in 1893</a>, the company began by manufacturing precision underwater hardware and on-deck fittings — rudders, struts, cleats, and lights — and quickly earned a reputation for fine engineering and enduring quality. After World War I, the brand's craftsmanship was so well regarded that legendary boatbuilder Chris-Craft turned to Attwood for brass fittings on their iconic pleasure boats.</p><p>Today, Attwood operates as part of the Navico Group by Brunswick, a global family of industry-leading marine companies, yet it has never lost the boater-first focus that built its name. What distinguishes Attwood from many competitors is their end-to-end philosophy: they design, manufacture, test, and distribute their own products rather than simply sourcing components from third parties. Every item in the Attwood catalog is rigorously tested to meet or exceed U.S. Coast Guard (USCG), American Boat and Yacht Council (ABYC), and CE standards — giving boaters and OEM manufacturers alike the confidence to rely on Attwood gear season after season.</p><h3>A Complete Marine Accessories Ecosystem</h3><p>Attwood's catalog spans an impressively broad range of marine needs. On the comfort and ergonomics side, their <a href="/7239-attwood-marine-seat-pedestal-packages-200926">Seat &amp; Pedestal Packages</a> deliver complete, ready-to-install seating system solutions backed by decades of engineering refinement. For boaters who prefer to build or customize their setup, Attwood's Fixed Mount Pedestals provide a sturdy, reliable foundation engineered for lasting stability on the water.</p><p>When it comes to protecting your hull at the dock, Attwood's <a href="/7239-attwood-marine-fenders-200396">Fenders</a> offer dependable, marine-grade cushioning against docks, pilings, and other vessels — an often-overlooked but essential piece of gear for every boat owner. Getting on and off the boat safely is equally important, and Attwood's <a href="/200179-boarding-ladders-attwood-marine-7239">Boarding Ladders</a> are designed with heavy-duty construction, rated hardware, and user-friendly features to make every entry and exit as secure as possible.</p><p>Beyond these categories, Attwood is also widely recognized for its bilge and aerator pumps, navigation lighting, fuel systems, rod holders, and trailering accessories — making the brand a true one-stop resource for outfitting or refreshing virtually any powerboat, fishing boat, or recreational vessel.</p><h3>Why Boaters Choose Attwood</h3><ul style="list-style:disc"><li><strong>100+ Years of Proven Experience</strong> — A heritage of quality engineering stretching back to 1893.</li><li><strong>Multi-Standard Compliance</strong> — Products tested to USCG, ABYC, and CE standards for safety and performance.</li><li><strong>OEM-Trusted</strong> — A leading supplier to major boat manufacturers across a wide range of product categories.</li><li><strong>Corrosion-Resistant Materials</strong> — Extensive use of 304 and 316 stainless steel, chrome-plated zinc, and marine-grade synthetics built for harsh saltwater environments.</li><li><strong>In-House Engineering</strong> — Advanced prototyping, simulation, and real-world testing ensure reliability before any product reaches the water.</li></ul>

Part Number

ST33-40-5
09/12/2036 8:27 AM
Sale Price

$28.54

In Stock (7)

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Usually delivered within 2 days

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Product Details

The Attwood Marine ST33-40-5 is a high-quality stainless steel gas spring designed for marine applications where durability and corrosion resistance are essential. This gas spring features an 8mm stainless steel rod with a 15-inch extended length, 9.5-inch compressed length, and provides 40 pounds of lifting force.

Key Features:

  • Premium #316 stainless steel alloy pressure tube and rod for maximum corrosion resistance
  • Marine-grade composite and stainless steel components throughout
  • 15-inch extended length, 9.5-inch compressed length
  • 8mm diameter rod for reliable performance
  • 40-pound force rating ideal for hatches, lids, and storage compartments
  • Direct replacement for worn or damaged gas springs on boats and marine equipment

These replacement gas springs are engineered specifically for the harsh marine environment, offering superior durability and longevity compared to standard gas springs. Perfect for boat hatches, engine covers, storage compartments, and other marine applications requiring smooth, controlled lifting assistance.

Products specifications

Approximate Stroke

5.5"

Compressed Measurement

9.5"

Cylinder Size

18mm

Diameter: Rod

8mm

Extended

15"

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VERY GOOD

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great prices, but one item is not in stock...I'm curious when the estimated delivery date is, which is not displayed.

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Quick and easy.

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So far so good

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