What is the difference between the ST33-40-5 and ST35-40-5?

The ST33-40-5 has a longer stroke, extending to 15 inches and compressing to 9.5 inches, while the ST35-40-5 is shorter, extending to 12 inches and compressing to 8.5 inches. Both deliver 40 lbs of force.

How do I pick the right size gas spring for my hatch or lid?

Measure the fully open (extended) and fully closed (compressed) distance between the mounting points on your hatch. Choose the option whose extended and compressed lengths most closely match your measurements.

How much lifting force do these gas springs provide?

Both models in this line provide 40 lbs of extension force, enough to hold a hatch, lid, or door open smoothly and safely.

What material are these gas springs made from?

The pressure tube and rod are #316 stainless steel alloy, with remaining exposed components made of stainless steel or marine-grade composite, making them suitable for saltwater environments.

Are these gas springs suitable for saltwater use?

Yes, the #316 stainless steel construction is designed to resist corrosion in saltwater and other moisture-prone marine environments.

What is the rod diameter and socket type on these gas springs?

Both models have an 8mm rod diameter and use a 10mm composite socket type.

What applications are these gas springs used for?

They are commonly used on livewells, storage hatches, lids, console covers, and other doors or panels that need controlled lift support.

How many gas springs come in a package?

Each package contains 1 gas spring. Most hatch and lid applications use two springs, one on each side, so order accordingly.

Attwood Stainless Steel Gas Springs - 40 lb Force

Attwood Stainless Steel Gas Springs - Hatch & Lid Lift Supports, 12" to 15" Extended, 40 lb Force

$35.69

Keep hatches, lids, doors, and console covers from slamming shut or dropping on your hands with Attwood's Stainless Steel Gas Springs. Built with a #316 stainless steel pressure tube and rod, these compact lift supports resist corrosion in saltwater and other harsh marine environments while delivering a steady, controlled 40 lb of extension force. Whether you're outfitting a livewell lid, storage hatch, or access panel, these gas springs hold the opening securely in place and provide smooth, safe operation every time.

Specifications

Brand: Attwood
Material: #316 stainless steel pressure tube and rod; stainless steel or marine-grade composite on remaining components
Force: 40 lbs
Rod Diameter: 8mm
Socket Type: 10mm Composite
Package Quantity: 1
Saltwater-resistant construction

Sizes & Options

This gas spring line is available in two stroke lengths to match your application. Measure the fully compressed and fully extended distance your hatch or lid requires, then match it to the closest option below. The ST33-40-5 offers a longer stroke (15" extended / 9.5" compressed) for larger openings, while the ST35-40-5 offers a shorter stroke (12" extended / 8.5" compressed) for tighter spaces. Both provide the same 40 lb of lifting force.

Attwood Stainless Steel Gas Springs - Hatch & Lid Lift Supports, 12" to 15" Extended, 40 lb Force

Specifications

Sizes & Options

You may also like

Join our email list

Your cart is empty

Your cart is empty