My Account
Shopping Cart

Attwood Marine ST34-120-5 Stainless Steel Gas Spring 120 Lb 8 Inch Stroke

Manufacturer

Attwood Marine

<h3>About Attwood Marine</h3><p><strong>Attwood Marine</strong> has been a cornerstone of the boating world for over a century. Founded with a commitment to quality engineering and practical design, Attwood grew from manufacturing underwater hardware and on-deck fittings into one of the most recognized names across every segment of the marine accessories market. Today, the brand operates as part of the Navico Group by Brunswick — a global family of market-leading marine companies — yet it has never lost the focused, boater-first philosophy that built its reputation.</p><p>What sets Attwood apart is their end-to-end approach: they design, manufacture, test, and distribute their own products rather than simply resourcing components from third parties. Every product in their catalog is tested against the highest U.S. Coast Guard (USCG), American Boat and Yacht Council (ABYC), and CE standards, giving boaters and OEM boat builders alike the confidence that Attwood parts will perform when it matters most. Corrosion-resistant materials — including 304 and 316 stainless steel, chrome-plated zinc, and marine-grade synthetics — are used throughout the lineup to ensure durability in both freshwater and saltwater environments.</p><p>Attwood is also a leading OEM supplier, meaning you'll find their components pre-installed on boats straight from the factory. That pedigree speaks volumes: when boat manufacturers trust a brand to equip new vessels, that's a strong vote of confidence for the aftermarket buyer as well.</p><h3>Attwood Marine Product Categories</h3><p>Attwood's catalog spans a remarkably broad range of marine needs. On the docking and mooring side, their <a href="/7239-attwood-marine-fenders-201953">boat fenders</a> provide reliable hull protection against docks, pilings, and other vessels — an essential piece of gear for any boat owner. For on-water comfort and cockpit organization, Attwood's <a href="/7239-attwood-marine-seat-pedestal-packages-202496">seat &amp; pedestal packages</a> deliver complete seating system solutions backed by years of ergonomic engineering, while their <a href="/7239-attwood-marine-seat-clamp-mounts-202497">seat clamp mounts</a> and <a href="/7239-attwood-marine-seat-clamp-mounts-200927">mounting hardware</a> make swapping or positioning seats quick and secure. Rounding out the seating ecosystem, Attwood's broad selection of <a href="/7239-attwood-marine-seating-table-parts-accessories-202501">seating &amp; table parts and accessories</a> keeps every swivel, slide, and fitting performing at its best season after season.</p><p>Beyond seating and docking, Attwood is well known for its bilge and aerator pumps (including the iconic Sahara Mk2 and Tsunami series), navigation lighting, fuel systems, rod holders, and trailering accessories — making it a one-stop resource for outfitting or refreshing virtually any powerboat, fishing boat, or recreational vessel.</p><h3>Why Boaters Trust Attwood</h3><ul><li><strong>100+ years of marine expertise</strong> — a track record that few brands can match</li><li><strong>USCG, ABYC &amp; CE certified</strong> products built to rigorous safety and performance standards</li><li><strong>OEM-preferred supplier</strong> to leading boat manufacturers worldwide</li><li><strong>Corrosion-resistant construction</strong> engineered for saltwater and freshwater environments</li><li><strong>Full design-to-distribution control</strong> ensuring consistent quality across every product</li></ul>

Part Number

ST34-120-5
06/07/2036 4:57 PM
Sale Price

$34.00

In Stock (9)

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 Attwood Marine ST34-120-5 is a heavy-duty stainless steel gas spring designed for marine applications requiring smooth, controlled motion and reliable support. Part of Attwood's INOX Stainless Standard Series, this gas strut provides 120 pounds of force to support large hatches, engine compartments, storage boxes, and access doors on boats and marine vehicles.

Key Specifications:

  • Extended Length: 20 inches
  • Compressed Length: 12 inches
  • Stroke Length: 8 inches
  • Output Force: 120 pounds
  • Rod Diameter: 8mm (5/16 inch)
  • Cylinder Diameter: 18mm (3/4 inch)
  • End Fittings: 10mm ball socket composite ends

Marine-Grade Construction:

  • Stainless steel shell and rod for superior corrosion resistance
  • High-strength, corrosion-proof composite end fittings
  • Passes ASTM B117 salt spray testing
  • 30,000 cycle lifecycle tested for durability
  • Up to 30% lower cost than traditional premium stainless springs

The ST34-120-5 combines professional-grade performance with excellent value, making it ideal for harsh saltwater environments where reliability and longevity are essential. The 3/8-inch ball socket ends provide secure attachment and easy installation for a wide range of marine applications.

Thanks, very good so far.

so happy

Awesome first time buyer,but not last Thanks for the awesome prices

Good website to find parts and well explain!!!

They are excellent. They were able to send out my item as early as the next day. I am anticipating my product by early next week. Great!

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