{"product_id":"heavy-duty-gas-strut-300mm-400n-pair-m6-threaded-ball-joint-with-4x-l-brackets","title":"Heavy Duty Gas Strut 300mm 400N Pair – M6 Threaded Ball Joint – With 4x L Brackets","description":"\u003ch2\u003eHeavy Duty Gas Strut 300mm 400N Pair – M6 Threaded Ball Joint – With 4x L Brackets\u003c\/h2\u003e\n\u003cp\u003e\u003cspan style=\"background-color: #1f7a3d; color: #ffffff; padding: 4px 8px; border-radius: 3px; font-weight: bold;\"\u003e✓ IN STOCK – FAST UK DISPATCH\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eDesigned for external and load-bearing lid applications, this \u003cstrong\u003e300mm 400N heavy-duty gas strut pair\u003c\/strong\u003e provides stable lift support for medium-weight lids that need controlled movement and dependable hold-open performance. It is a practical choice for \u003cstrong\u003etool boxes, storage units, access covers, vehicle compartments and other heavy-duty lid systems\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eThis model is positioned within our \u003cstrong\u003eHeavy Duty Gas Struts\u003c\/strong\u003e range, making it more suitable for demanding lid support jobs than light furniture-style gas springs. Where secure mounting, repeated use and consistent lifting force matter, this setup offers a stronger and more application-focused solution.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eProduct Configuration\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eForce Rating:\u003c\/strong\u003e 400N per strut\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTotal Support:\u003c\/strong\u003e 800N per pair\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExtended Length:\u003c\/strong\u003e 300mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStroke:\u003c\/strong\u003e Approx. 110mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnd Fitting:\u003c\/strong\u003e M6 Threaded Ball Joint\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBracket Type:\u003c\/strong\u003e 4 × Steel L Mounting Brackets\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSupply Format:\u003c\/strong\u003e Pair of 2 gas struts\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eWhere This Heavy Duty Model Is Commonly Used\u003c\/h3\u003e\n\u003cp\u003eThe 300mm 400N format is typically selected for compact but relatively heavy lids where a short body length is needed without dropping too low on support force.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eMetal storage box lids\u003c\/li\u003e\n\u003cli\u003eTool box and site box lids\u003c\/li\u003e\n\u003cli\u003eOutdoor storage compartments\u003c\/li\u003e\n\u003cli\u003eVehicle side lockers and van compartments\u003c\/li\u003e\n\u003cli\u003eService covers and access panels\u003c\/li\u003e\n\u003cli\u003eWorkshop cabinet lids\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIt is especially useful where the lid must open with control and remain supported during loading, inspection or maintenance.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eRecommended Lid Size and Weight\u003c\/h3\u003e\n\u003cp\u003eThis configuration is generally suitable for the following range:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eRecommended lid depth:\u003c\/strong\u003e 400–600mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSuitable lid weight (lid only):\u003c\/strong\u003e 40–72kg\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eActual performance depends on hinge position, mounting distance, opening angle and the centre of gravity of the lid. Heavier materials such as steel may require more precise bracket positioning.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eImportant Force Selection Guidance\u003c\/h3\u003e\n\u003cp\u003eGetting the correct Newton force is critical for safe and effective lid support.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eIf the struts are \u003cstrong\u003etoo weak\u003c\/strong\u003e, the lid may not stay open safely.\u003c\/li\u003e\n\u003cli\u003eIf the struts are \u003cstrong\u003etoo strong\u003c\/strong\u003e, the lid may become difficult to close.\u003c\/li\u003e\n\u003cli\u003eFor medium-heavy lids in compact installations, \u003cstrong\u003e300mm 400N\u003c\/strong\u003e is often chosen as a balanced option.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eWhen selecting your model, always consider the \u003cstrong\u003elid-only weight\u003c\/strong\u003e, not the total box weight.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eMounting and Installation Notes\u003c\/h3\u003e\n\u003cp\u003eThis set uses a \u003cstrong\u003ethread-through M6 ball joint system\u003c\/strong\u003e, which is well suited to more secure heavy-duty mounting compared with lighter clip-on styles.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eFit one strut on each side of the lid\u003c\/li\u003e\n\u003cli\u003eMount the upper bracket around \u003cstrong\u003e20–30% from the hinge line\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eFix the lower bracket to the inside wall or structural frame\u003c\/li\u003e\n\u003cli\u003eEnsure the gas struts remain \u003cstrong\u003eslightly compressed when the lid is closed\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis preload is important because it helps deliver smooth assisted opening from the beginning of the lift movement.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eWhy the M6 Threaded Ball Joint System Matters\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eProvides a tighter and more secure fixing method\u003c\/li\u003e\n\u003cli\u003eBetter suited to metal lids and rigid frame structures\u003c\/li\u003e\n\u003cli\u003eHelps reduce movement during repeated opening cycles\u003c\/li\u003e\n\u003cli\u003eImproves long-term installation stability\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eFor heavy-duty external applications, secure attachment points are just as important as the strut force itself.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eWhat You Receive\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e2 × Heavy-duty gas struts\u003c\/li\u003e\n\u003cli\u003e4 × L mounting brackets\u003c\/li\u003e\n\u003cli\u003eM6 threaded ball joint hardware\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eCustomer Experience Benefits\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eHelps prevent sudden lid drop\u003c\/li\u003e\n\u003cli\u003eMakes heavy lids easier to lift and control\u003c\/li\u003e\n\u003cli\u003eImproves day-to-day usability of boxes and access panels\u003c\/li\u003e\n\u003cli\u003eSupports a more secure and professional installation result\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eA Few Important Checks Before Ordering\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMeasure the full extended length you need\u003c\/li\u003e\n\u003cli\u003eCheck the lid-only weight rather than the full unit weight\u003c\/li\u003e\n\u003cli\u003eConfirm there is enough internal clearance for bracket installation\u003c\/li\u003e\n\u003cli\u003eChoose the force based on real lid resistance, not guesswork\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIf you are between two force options, the correct choice will depend heavily on your bracket geometry and hinge position.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eAUTORCE Support and Dispatch\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eFast UK dispatch\u003c\/li\u003e\n\u003cli\u003eQuality-checked components\u003c\/li\u003e\n\u003cli\u003e30-day returns on unused items\u003c\/li\u003e\n\u003cli\u003eResponsive customer support\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis \u003cstrong\u003e300mm 400N heavy duty gas strut pair with 4x L brackets\u003c\/strong\u003e is a strong choice for compact heavy-lid applications where secure fitting, controlled lift support and reliable day-to-day performance are essential.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"AUTORCE","offers":[{"title":"Default Title","offer_id":56160480657787,"sku":"2x400N-300MM-BJ-BRACKET-9","price":24.9,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0702\/6933\/7892\/files\/heavy-duty-gas-strut-300mm-400n-pair-m6-threaded-ball-joint-with-4x-l-brackets-1.png?v=1773877771","url":"https:\/\/autorce.co.uk\/products\/heavy-duty-gas-strut-300mm-400n-pair-m6-threaded-ball-joint-with-4x-l-brackets","provider":"Autorce","version":"1.0","type":"link"}