Attwood Marine Ni-Slide Gas Spring Hatch Support, 60 lb, 20 in Extended, 12 in Compressed, 10 mm Blade Ends, Black Finish

Overview

The Attwood Marine SL3-60-5 is a 60 lb gas spring hatch support with a 20 inch extended length, 12 inch compressed length, and an 8 inch stroke. It is part of the Ni-Slide aftermarket range and uses a 10 mm diameter blade end fitting.

This type of support is used to help open and hold a hatch, locker lid, or access panel while keeping movement controlled when closing. On a boat, the key fit points are the open length, closed length, output force, and end fitting style, so this part makes sense when those measurements match the spring already on the vessel.

The black-finish spring is suited to routine deck and compartment use where you need a direct replacement rather than a change in hatch geometry. It is also useful when the existing brackets are still serviceable and only the spring itself needs to be replaced.

Key features

• 20 inch extended length, 12 inch compressed length, and 8 inch stroke
• 60 lb output force for hatches and lids that require the same support rating
• 10 mm diameter blade end fitting
• Ni-Slide aftermarket gas spring configuration
• Black finish
• Built with biodegradable no hazard to water grade oil
• Passes ASTM B117, Attwood salt spray, and a 30,000 cycle lifecycle test

Compatibility and fit

This support is a good match for boats that already use a gas spring with the same 20 inch by 12 inch geometry and a 60 lb rating. That can include deck hatches, storage lids, livewell lids, and similar access panels, but the actual fit depends on the bracket spacing and leverage of the hatch.

Before ordering, check the spring length with the hatch open and closed, confirm the end style is a 10 mm blade fitting, and verify the force rating on the old spring if it is still readable. A spring with different dimensions or force can change how far the hatch opens and how much effort is needed to close it.

Installation and setup

This part is typically used as a replacement spring in an existing setup. If the boat still has the original mounting points, inspect the brackets, fasteners, and hatch structure for wear or corrosion before installation. Mounting brackets for this aftermarket range are selected separately, so existing hardware should be checked for compatibility before reuse.

Shipping
We ship worldwide from the United States. Rates are calculated at checkout based on destination and package weight. Some items include free shipping, which will show automatically. Not every product is eligible for international shipping; checkout will confirm eligibility. We do not ship to PO Boxes except through USPS, and not all packages qualify.

Processing and dispatch
Most orders are verified, packed, and handed to the carrier within 1 to 2 business days. Some products may need extra handling time or ship directly from the manufacturer. For certain international orders, inventory transfers between warehouses may add time. If any delay is expected, we will let you know the dispatch date.

Delivery and tracking
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Duties, taxes, and support
International customers are responsible for any customs duties, taxes, and fees charged by the destination country. If these charges are refused and a shipment returns to us, the carrier’s return cost and any re-entry customs fees will be deducted from the refund. If your order is late or you need help, contact cs@qualityboatparts.com and we will assist you.

Quality Boat Parts is a reseller. Many items include a manufacturer’s warranty, and all warranty service is handled directly by the manufacturer. We do not manage or administer warranty claims on behalf of customers.

Warranty terms, coverage, and duration are set by each manufacturer. Issues involving defects, repairs, or replacements must be addressed with the manufacturer’s support team. When available, the warranty period is listed on the product page. If it is not shown, contact us or the manufacturer for details before purchasing.

To start a claim, the customer must contact the manufacturer and follow their process. Keep your proof of purchase and original packaging, and register the product if the manufacturer requires it, as these are often needed for warranty service.

We are happy to help you find the right contact or documentation, but we cannot decide outcomes or intervene in claim resolutions. For guidance, email cs@qualityboatparts.com.