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Attwood Marine ST35-40-5 Stainless Steel Gas Spring 12" Extended 8.5" Compressed 40 lb

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

ST35-40-5
09/12/2036 11:19 AM
Sale Price

$28.61

In Stock (7)

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Product Details

The Attwood Marine ST35-40-5 is a premium stainless steel gas spring designed for marine applications where durability and corrosion resistance are critical. This gas spring extends to 12 inches and compresses to 8.5 inches, providing 40 pounds of lifting force for hatches, lids, and access panels.

Superior Corrosion Protection:

  • Pressure tube and rod constructed from #316 stainless steel alloy for maximum corrosion resistance
  • All exposed components are either stainless steel or marine-grade composite materials
  • Engineered specifically for saltwater environments and continuous moisture exposure
  • 8mm diameter rod provides reliable strength and smooth operation

Ideal Applications:

  • Livewell hatches and compartments
  • Line lockers and storage compartments
  • Deck hatches and engine access panels
  • Fish boxes and bait tanks
  • Any marine application requiring corrosion-resistant lift support

This gas spring delivers both functionality and appearance, making it the perfect upgrade or replacement for worn or corroded lift supports on boats and marine equipment. The stainless steel construction ensures long-lasting performance even in harsh saltwater conditions.

very good

so far so good

Wow!! I came across Autoplicity while searching for a fuel pump for my Trans-Am. Not only did they have the cheapest price for the part, but they also had extremely reasonable shipping cost. Most websites claim to have free shipping but it seemed the cost of shipping was added to the cost of their part. Then I find out my order was processed and shipped within one business day!! I'll definately be bookmarking Autoplicity's home page!! Thanks!!

yes happy after a good customer serice helped with a price adjustment to my order. they did have good prices on most things, but it took some work to find the lowest price, so you do need to be a smart shopper.

We looked a lot of places online for the steering stabilizer for our vehicle. We priced and looked to find out who had the best product and fastest shipping. We were so glad that Autoplicity was able to have just what we needed. We highly recommend that you visit autopicity.com for all you vehicle needs and we thank Autoplicity for their expediency in getting us our stabilizer.

Lowest price I found and a great quick ordering experience. Product is listed as for WRX, but other sources say WRX model installs differently. Will work fine for my Forester, though.

All good so far. Could be a little clearer about if the order will include needed any additionally needed hardware for install.

Easy and had the best price.

Always have what I need for the lowest price with free or cheap shipping.

Tank You!! Thank you very much

Just to put more info about the product being purchased

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