{"product_id":"sea-dog-321660-1-stainless-steel-hatch-spring-9-in-with-internal-anti-overextension-cable","title":"Sea-Dog Hatch Spring 9 Inch Stainless Steel, Part 321660-1, with Internal Safety Cable","description":"\u003cp\u003eThe Sea-Dog Hatch Spring (Part 321660-1) supports a boat hatch lid in the open position and holds it there against wind and vibration. It is formed from 304 stainless steel for corrosion resistance in the marine environment, and it includes an internal wire cable running through the coil that prevents the spring from being overextended during normal use. This internal cable is a key safety feature: it keeps the spring from stretching past its working range and failing when the hatch is opened and closed repeatedly.\u003c\/p\u003e\u003cp\u003eThe spring measures 9 inches at dimension A, with B and C dimensions of 1-1\/16 inches each. It installs using four #10 RH fasteners or 3\/16 inch pop rivets, though fasteners are not included and must be purchased separately. Sea-Dog notes this spring is not recommended for applications where the hatch will scoop wind while the boat is underway, since that condition can overextend the spring beyond its intended use even with the internal cable in place. It is a direct fit wherever a 9 inch hatch spring of this bolt pattern is needed, such as replacing a worn or broken factory spring on a deck or cabin hatch.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Sea-Dog\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e 321660-1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e 304 Stainless Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Hatch Spring\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength (A):\u003c\/strong\u003e 9 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWidth (B):\u003c\/strong\u003e 1-1\/16 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDepth (C):\u003c\/strong\u003e 1-1\/16 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFastener:\u003c\/strong\u003e #10 RH and\/or 3\/16 inch Pop Rivet (not included)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInternal Safety Cable:\u003c\/strong\u003e Yes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.228 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 035514321730\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat size is the Sea-Dog Hatch Spring 321660-1?\u003c\/strong\u003e The spring measures 9 inches at dimension A, with B and C dimensions of 1-1\/16 inches each, on part number 321660-1.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the 321660-1 hatch spring made of?\u003c\/strong\u003e It is made of formed 304 stainless steel, chosen for its resistance to corrosion in marine environments.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes this hatch spring include an internal safety cable?\u003c\/strong\u003e Yes, the 321660-1 hatch spring has an internal wire cable running through the coil that prevents the spring from being overextended during normal use.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat fasteners are needed to install the Sea-Dog Hatch Spring?\u003c\/strong\u003e Installation uses four #10 RH fasteners or 3\/16 inch pop rivets; neither the screws nor the rivets are included with the 321660-1 spring.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eAre mounting fasteners included with part 321660-1?\u003c\/strong\u003e No, the #10 RH fasteners or 3\/16 inch pop rivets used to mount this Sea-Dog hatch spring must be purchased separately.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan this hatch spring be used on a hatch that stays open while underway?\u003c\/strong\u003e Sea-Dog does not recommend the 321660-1 spring for applications where the hatch will scoop wind while the boat is underway, since that can overextend the spring even with the internal cable in place.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat does the internal cable on the hatch spring actually do?\u003c\/strong\u003e On the 321660-1 hatch spring, the internal wire cable acts as a physical limiter inside the coil, stopping the spring from stretching past its normal working range and reducing the risk of spring failure.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the Sea-Dog Hatch Spring 321660-1 weigh?\u003c\/strong\u003e This hatch spring weighs 0.228 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the 321660-1 hatch spring corrosion resistant?\u003c\/strong\u003e Yes, it is constructed of corrosion resistant formed 304 stainless steel, suitable for marine deck and cabin hatch use.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the UPC for the Sea-Dog Hatch Spring, part 321660-1?\u003c\/strong\u003e The UPC for this Sea-Dog hatch spring is 035514321730.\u003c\/p\u003e","brand":"Sea-Dog","offers":[{"title":"Default Title","offer_id":48988658860251,"sku":"S-D-321660-1","price":22.39,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/4569.jpg?v=1784425656","url":"https:\/\/www.goodvibesmarina.com\/products\/sea-dog-321660-1-stainless-steel-hatch-spring-9-in-with-internal-anti-overextension-cable","provider":"Good Vibes Marina","version":"1.0","type":"link"}