Attwood Marine Stainless Standard Gas Spring, 10 lb, 15 in Extended, 9.5 in Compressed, 10mm Socket

Overview

The Attwood Marine ST13-10-5 is a stainless gas spring hatch support with a 15.00 inch extended length, a 9.50 inch compressed length, and a 10 lb output force. It uses a 6mm rod x 15mm cylinder body and 10mm socket end fittings, so it is a direct replacement only when those measurements match the support already fitted to the boat.

This type of support is used to hold up lighter hatches and compartment lids without needing a manual prop. The stainless shell and rod, together with composite end fittings, make it a sensible choice around deck hatches, lockers, and other wet areas where corrosion is part of normal use.

For replacement work, the important checks are extended length, compressed length, stroke, end fitting style, and force rating. Matching all of those points helps the hatch open to the right angle and stay supported without putting extra load on hinges or brackets.

Key features

• 15.00 inch extended length and 9.50 inch compressed length for hatch and lid setups that match this geometry
• 10 lb output force suited to lighter hatch and compartment lid applications
• 10mm socket end fittings for installations that use matching ball stud hardware
• 6mm rod x 15mm cylinder size in Attwood's Stainless Standard gas spring range
• Stainless steel shell and rod with composite end fittings that stand up better in wet marine spaces

Compatibility and fit

This support is a match when the existing spring on the boat uses the same 15.00 inch open length, 9.50 inch closed length, 5.50 inch stroke, and 10mm socket ends. On hatch supports, small differences in length or socket style can change opening angle and closing load more than most owners expect.

It is a good fit for owners replacing a worn gas spring on a deck hatch, access lid, or storage compartment where the original support matches this size and force class. If the hatch uses two supports, check both sides before ordering so the lid does not end up lifting unevenly.

Installation and setup

Before ordering, compare the old support end to end and confirm the socket hardware on the boat is the same 10mm style. Length, force, and end fittings matter more than the outside appearance, especially on boats where bracket placement is tight and hatch travel is limited.

For a clean replacement, match the new support to the existing mounting points rather than trying to make a near size work. That keeps the hatch movement predictable and helps avoid a lid that opens too far, will not stay open, or becomes hard to close.

Orders are processed within 2 business days, which includes verification, packing, and dispatch. Orders of $100 or more qualify for free shipping when eligible. For orders under $100, shipping costs are calculated at checkout based on destination, package weight, and selected service. International shipping is available for eligible products, and certain items may require additional handling, warehouse transfers, or may ship directly from the manufacturer, which can affect processing time.

Deliveries are handled by preferred carriers such as USPS, UPS, FedEx, DHL, and others depending on your location and selected service. Estimated delivery times are displayed at checkout and may vary due to customs processing, carrier delays, weather, postal disruptions, or other circumstances beyond our control. Once your order ships, you'll receive a confirmation email with tracking information. Tracking may take up to 24 hours to update on the carrier's website and is also available through your account when applicable.

We ship throughout the United States and to most international destinations for products eligible for international shipping. International orders may be subject to customs duties, taxes, brokerage charges, or other import fees, which are the customer's responsibility and are not included in the product or shipping price. PO Boxes are accepted only when shipping through USPS, and not all packages qualify for this option. If your order does not arrive within the estimated delivery window, please contact us at info@apollolighting.com or +1 (954) 375-0100 so we can assist with locating your package.

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Returns may be requested within 30 days of receiving your order. Items must be unused, uninstalled, unaltered, and returned in their original packaging with all tags, packing materials, blank warranty cards, manuals, instructions, accessories, and included items. Certain products, including installed or used electronics, electrical components, lighting, consumables, custom or special-order items, cut-to-length products, safety equipment, and merchandise exposed to water or marine conditions, may not be eligible for return.

To request a return, sign in to your account and select the applicable order and items, and submit your request for review. Eligible unfulfilled items may also be submitted for cancellation within 1 hour of placing the order. Returns or cancellations are not considered approved until you receive confirmation from Apollo Lighting. Please do not ship or drop off merchandise before receiving return approval and instructions.

Customers are responsible for arranging and paying for return shipping unless the return is due to an error by Apollo Lighting or the item is verified as defective, damaged, or incorrect. Missing, damaged, defective, or incorrect items must be reported within 2 business days of delivery, and photos or other documentation may be required for review. If the issue is verified, Apollo Lighting may provide or reimburse return shipping and issue a replacement or refund depending on the circumstances. International customers are responsible for return shipping, duties, taxes, customs charges, brokerage fees, and other costs associated with an international return.

After your return is received and inspected, approved refunds are issued to the original payment method and may take 5-7 business days to appear after processing. Original shipping and handling charges are nonrefundable, and the value of any included free items that are not returned may be deducted from the refund. Apollo Lighting does not charge a standard restocking fee on eligible returns. Returns that are incomplete, damaged, installed, used, altered, improperly packaged, or otherwise do not meet the eligibility requirements may be refused. We recommend using a trackable and appropriately insured shipping service for all customer-arranged returns.

For assistance, contact info@apollolighting.com or call +1 (954) 375-0100.

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Many products sold by Apollo Lighting include a manufacturer's warranty covering defects in materials or workmanship. Warranty terms vary by brand, product category, and model, so eligibility, coverage duration, exclusions, and available remedies are determined by the applicable manufacturer. We recommend reviewing the warranty information provided with your product before installation or use, especially for marine electronics, navigation equipment, lighting, electrical systems, pumps, safety equipment, and other specialized marine products.

If you need warranty service, the claim must follow the process established by the manufacturer, authorized service center, or designated warranty provider. You may be asked for proof of purchase, a serial number, product registration, photos, maintenance or installation records, or other documentation. Apollo Lighting does not determine or modify a manufacturer's warranty coverage or final claim decision, but we are happy to help provide purchase information and direct you to the appropriate manufacturer or warranty resource.

Keep your receipt, product documentation, serial number information, and original packaging when practical. Damage caused by normal wear, misuse, improper installation, insufficient maintenance, corrosion, impact, unauthorized modifications, electrical issues, or operation outside the manufacturer's specifications may not be covered. Warranty claims are separate from standard returns, so a product that has been installed, used, or exposed to marine conditions may no longer qualify for return while still remaining eligible for evaluation under the manufacturer's applicable warranty.

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