{"id":48472,"date":"2026-06-05T13:54:26","date_gmt":"2026-06-05T11:54:26","guid":{"rendered":"https:\/\/nauticspares.com\/?post_type=product&#038;p=48472"},"modified":"2026-06-05T13:59:06","modified_gmt":"2026-06-05T11:59:06","slug":"nitrider-gas-spring-with-zinc-plated-ball-sockets-400-n-100089","status":"publish","type":"product","link":"https:\/\/nauticspares.com\/en\/product\/nitrider-gas-spring-with-zinc-plated-ball-sockets-400-n-100089\/","title":{"rendered":"Nitrider gas spring with zinc plated ball sockets \u2013 400 N \u2013 100089"},"content":{"rendered":"<h2>Description of the Nitrider gas spring 100089 \u2013 400 N \u2013 Stroke 300 mm<\/h2>\n<p>The <strong>100089 Nitrider\u00ae gas spring<\/strong> is a compression gas strut manufactured by <strong>Associated Spring SPEC UK \/ Barnes Group UK Ltd<\/strong> (Evesham, UK), originally produced to the specification of <strong>Dufour Yachts<\/strong> \u2014 one of the most respected names in French performance sailing yacht construction. This is a direct OEM replacement for the original factory-fitted unit on Dufour vessels where this reference was specified at build, and an appropriate choice for refit professionals seeking a reliable, proven strut in the same force class.<\/p>\n<p>The strut belongs to the <strong>Nitrider\u00ae N10 series<\/strong>: a 10 mm rod diameter and 23 mm tube diameter, threaded M8 x 1.25 at each end. The Nitrider\u00ae process applies a thermochemical surface nitriding treatment to the carbon steel rod, creating a hard, wear-resistant black outer layer that substantially extends rod seal life and corrosion resistance compared to a standard untreated carbon steel strut. The tube body receives a black e-coat finish per the GSNI specification, giving the complete assembly a uniform, professional black appearance suited to any interior or semi-exposed nautical environment.<\/p>\n<p>With a <strong>force of 400 N<\/strong> and a <strong>stroke of 300 mm<\/strong>, this unit covers a broad range of medium-to-large hatch and panel applications aboard Dufour yachts and similar production sailing boats: cockpit locker lids, chart table panels, engine compartment access covers, or any mechanism where a generous stroke combined with a firm holding force is required. The body length (L1) is <strong>649 mm<\/strong>, and with both zinc-plated EF-BS009Z ball sockets fitted the centre-to-centre length (L2) reaches <strong>685 mm<\/strong>.<\/p>\n<p>The end fittings are <strong>EF-BS009Z zinc-plated steel ball sockets<\/strong>: cage-type metal sockets with a compact 18.5 mm body length, \u00d810 mm ball seat, and M8 x 1.25 threaded shank. The zinc plating provides practical corrosion protection suitable for protected interior and semi-exposed locker environments. The revision history of this drawing (Rev D) records that the end fitting specification was updated from EF-BS006Z to EF-BS009Z \u2014 a change to a more compact socket profile while retaining the same \u00d810 ball and M8 x 1.25 thread. The sealed cylinder body carries the standard Ressorts SPEC pressure warning label confirming the unit must never be drilled, cut, or exposed to heat.<\/p>\n<p>Distributed in France through <strong>Ressorts SPEC<\/strong>, the authorised partner for Associated Spring \/ Barnes Group components.<\/p>\n<h3>Specifications<\/h3>\n<ul>\n<li><strong>Reference:<\/strong> 100089 \u2013 Rev D<\/li>\n<li><strong>Type:<\/strong> Nitrider\u00ae compression gas spring<\/li>\n<li><strong>Force (P1):<\/strong> 400 N<\/li>\n<li><strong>Stroke:<\/strong> 300 mm<\/li>\n<li><strong>Body length (L1):<\/strong> 649 mm<\/li>\n<li><strong>Centre length with end fittings (L2):<\/strong> 685 mm<\/li>\n<li><strong>Rod diameter (\u00d8R):<\/strong> 10 mm<\/li>\n<li><strong>Tube diameter (\u00d8T):<\/strong> 23 mm<\/li>\n<li><strong>Thread:<\/strong> M8 x 1.25<\/li>\n<li><strong>End fittings (both ends):<\/strong> EF-BS009Z \u2013 zinc-plated steel ball socket, \u00d810 mm ball, M8 x 1.25, 18.5 mm body length<\/li>\n<li><strong>Rod finish:<\/strong> Nitrided black (GSNI specification)<\/li>\n<li><strong>Body finish:<\/strong> Black e-coat (GSNI specification)<\/li>\n<li><strong>Original customer:<\/strong> Dufour Yachts<\/li>\n<li><strong>Manufacturer:<\/strong> Associated Spring SPEC UK \/ Barnes Group UK Ltd, Evesham<\/li>\n<\/ul>\n<h3>Installation \/ Maintenance<\/h3>\n<h4>Installation:<\/h4>\n<ul>\n<li>Clip the <strong>EF-BS009Z<\/strong> zinc-plated ball sockets onto the 10 mm ball studs at each mounting point. Align the strut axis with the direction of hatch or panel travel to prevent lateral side-loading on the rod seal and end fittings.<\/li>\n<li>Before fitting, verify the <strong>685 mm centre-to-centre length<\/strong> (with end fittings) matches the mounting geometry on the vessel \u2014 always measure the old strut tip-to-tip before removing it.<\/li>\n<li>Where the installation geometry permits, orient the strut with the rod end facing downward to preserve the lubrication film on the rod seal and maximise service life.<\/li>\n<li>At 400 N, ensure that the ball studs and their supporting structures are adequately dimensioned and fastened to withstand the applied load without deflection over time.<\/li>\n<\/ul>\n<h4>Maintenance:<\/h4>\n<ul>\n<li>Inspect the zinc-plated ball sockets periodically for wear, play, or surface corrosion \u2014 particularly after prolonged offshore passages or winter lay-up in salt-laden air.<\/li>\n<li>Apply a light coat of marine-grade silicone lubricant or corrosion-inhibiting grease to the ball joints at each annual service to maintain smooth articulation and extend socket life.<\/li>\n<li>Wipe down the Nitrider\u00ae rod occasionally with a cloth lightly moistened with silicone oil to keep the rod clean and maintain the seal lubrication film.<\/li>\n<li>The gas strut body is a <strong>sealed, pressurised unit \u2014 never drill, pierce, cut, or heat it<\/strong>. Replace as a complete assembly when the holding force has noticeably diminished or the rod seal weeps oil.<\/li>\n<\/ul>\n<div data-class=\"product-pros-cons-section\">\n<h3>Our review<\/h3>\n<div data-class=\"product-pros-cons-wrapper\">\n<div data-class=\"product-pros_cons product-pros\">\n<h4>\u2714\ufe0f Pros :<\/h4>\n<ul data-class=\"pros-cons-list\">\n<li>Nitrider\u00ae rod treatment significantly extends wear resistance and service life compared to standard untreated carbon steel gas struts of the same size class.<\/li>\n<li>400 N force and 300 mm stroke cover a wide range of medium-to-large hatch and panel applications aboard Dufour yachts and comparable production sailing vessels.<\/li>\n<li>EF-BS009Z zinc-plated steel ball sockets offer a robust metal joint with a compact 18.5 mm profile \u2014 lower profile than the EF-BS006Z while maintaining the same \u00d810 ball and M8 thread standard.<\/li>\n<li>OEM-grade component from Associated Spring \/ Barnes Group, the original equipment supplier to Dufour Yachts \u2014 guaranteed dimensional and force accuracy for direct replacement.<\/li>\n<li>Uniform black finish (nitrided rod + e-coat body) integrates cleanly into any locker or panel cavity.<\/li>\n<\/ul>\n<\/div>\n<div data-class=\"product-pros_cons product-cons\">\n<h4>\u274c Cons :<\/h4>\n<ul data-class=\"pros-cons-list\">\n<li>Nitrider\u00ae carbon steel construction is more corrosion-resistant than plain carbon steel, but not equivalent to 316L stainless; best suited to protected interior or semi-sheltered locker environments rather than fully exposed, permanently wet deck applications.<\/li>\n<li>Zinc-plated ball sockets may show surface corrosion in permanently damp or high-salinity environments over extended periods; consider stainless steel socket alternatives for more aggressive conditions.<\/li>\n<li>Fixed force of 400 N \u2014 verify this matches the load and geometry of your specific hatch or panel before ordering.<\/li>\n<li>The 685 mm centre-to-centre dimension is fixed; always measure the existing strut tip-to-tip before purchasing to ensure a correct fit.<\/li>\n<\/ul>\n<\/div>\n<div data-class=\"product-pros_cons product-conclusion\">\n<h3>Conclusion<\/h3>\n<p>The <strong>100089<\/strong> is the correct direct replacement for Dufour Yachts vessels originally fitted with this OEM reference, and a sound choice for any refit project requiring a reliable medium-force Nitrider\u00ae gas strut in this size class. Its 400 N force, 300 mm stroke, and compact zinc-plated ball sockets make it well-suited to cockpit locker lids, chart table panels, and engine bay access covers in sheltered or semi-exposed nautical environments. Before ordering, confirm that your mounting geometry corresponds to the <strong>685 mm centre-to-centre dimension<\/strong> with fittings in place, and that 400 N is the correct force for your application. For installations subject to prolonged direct saltwater exposure, consider upgrading to a 316L stainless steel gas spring with stainless ball sockets for added durability.<\/p>\n<\/div>\n<div data-class=\"product-pros_cons product-good-to-know\">\n<h3>Good to Know<\/h3>\n<ul data-class=\"pros-cons-list\">\n<li>OEM reference produced for <strong>Dufour Yachts<\/strong> \u2014 verify fitment by measuring the existing strut on your vessel before ordering.<\/li>\n<li>End fittings: <strong>EF-BS009Z<\/strong> \u2013 zinc-plated steel ball socket, \u00d810 mm ball, M8 x 1.25, 18.5 mm body length (both ends). Revised from EF-BS006Z at Rev D \u2014 same ball diameter and thread, more compact socket body.<\/li>\n<li>Total centre-to-centre length with fittings: <strong>685 mm<\/strong>. Body length alone (L1): 649 mm. Always measure the old strut tip-to-tip before purchasing.<\/li>\n<li><strong>Nitrider\u00ae series<\/strong>: rod is nitrided black and body is e-coated black per GSNI specification \u2014 enhanced rod wear resistance compared to plain carbon steel, suited to interior and semi-exposed protected environments.<\/li>\n<li>The cylinder body is a <strong>sealed, pressurised unit<\/strong> \u2014 never drill, pierce, cut, or heat it.<\/li>\n<li>Distributed in France by <strong>Ressorts SPEC<\/strong> \u2014 original manufacturer: Associated Spring SPEC UK \/ Barnes Group UK Ltd.<\/li>\n<li>Browse our full range of <a href=\"https:\/\/nauticspares.com\/en\/product-category\/spare-parts\/gas-springs\/\" title=\"Marine gas springs\">marine gas springs<\/a> for other force ratings, stroke lengths, and material options including 316L stainless steel.<\/li>\n<\/ul>\n<\/div>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>The <strong>100089<\/strong> is a <strong>Nitrider\u00ae gas spring<\/strong> developed for medium-to-large hatches and access panels aboard sailing and motor yachts.<\/p>\n<p>Originally produced for <strong>Dufour Yachts<\/strong>, this robust <strong>gas strut<\/strong> is fitted at both ends with <strong>EF-BS009Z zinc-plated steel ball sockets<\/strong> and delivers a push force of <strong>400 N<\/strong> across a stroke of <strong>300 mm<\/strong>, providing reliable, consistent support for a wide range of onboard mechanisms.<\/p>\n<p>With a centre-to-centre length of <strong>685 mm<\/strong> including end fittings, this <strong>marine gas strut<\/strong> is a precision OEM spare part for vessels originally equipped with this reference.<\/p>\n","protected":false},"featured_media":48465,"comment_status":"open","ping_status":"closed","template":"","meta":[],"product_brand":[1271],"product_cat":[93,91],"product_tag":[1264,1262],"class_list":["post-48472","product","type-product","status-publish","has-post-thumbnail","product_brand-as-raymond","product_cat-spare-parts","product_cat-gas-springs","product_tag-as-raymond-2","product_tag-gas-strut","product_shipping_class-small-2","first","instock","taxable","shipping-taxable","purchasable","product-type-simple"],"_links":{"self":[{"href":"https:\/\/nauticspares.com\/en\/wp-json\/wp\/v2\/product\/48472","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/nauticspares.com\/en\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/nauticspares.com\/en\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/nauticspares.com\/en\/wp-json\/wp\/v2\/comments?post=48472"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/nauticspares.com\/en\/wp-json\/wp\/v2\/media\/48465"}],"wp:attachment":[{"href":"https:\/\/nauticspares.com\/en\/wp-json\/wp\/v2\/media?parent=48472"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/nauticspares.com\/en\/wp-json\/wp\/v2\/product_brand?post=48472"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/nauticspares.com\/en\/wp-json\/wp\/v2\/product_cat?post=48472"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/nauticspares.com\/en\/wp-json\/wp\/v2\/product_tag?post=48472"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}