{"product_id":"21686478-hexagon-nut-genuine-volvo-penta","title":"21686478 Hexagon Nut | Genuine Volvo Penta Part","description":"\u003ch2\u003e\n 🔧 Product Description\n\u003c\/h2\u003e\n\u003cp\u003e\n Genuine Volvo Penta hexagon nut weighing 0.025 kg, listed for two TAD series engine applications. The narrow fitment makes this a specific fastener rather than a general-purpose nut, so it should be selected by part number rather than matched by thread alone.\n\u003c\/p\u003e\n\u003ch2\u003e\n 🚤 Compatibility\n\u003c\/h2\u003e\n\u003cp\u003e\n Typically suits:\n\u003c\/p\u003e\n\u003cul\u003e\n \u003cli\u003e\n  Volvo Penta TAD550GE\n \u003c\/li\u003e\n \u003cli\u003e\n  Volvo Penta TAD551GE\n \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n \u003cli\u003e\n  \u003cstrong\u003e\n   Engine Family:\n  \u003c\/strong\u003e\n  TAD\n \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\n ⚙️ Key Features\n\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003e\n  OEM Volvo Penta part number 21686478\n \u003c\/li\u003e\n \u003cli\u003e\n  Net weight 0.025 kg\n \u003c\/li\u003e\n \u003cli\u003e\n  Listed for two specific engine applications\n \u003c\/li\u003e\n \u003cli\u003e\n  Fits TAD series industrial and marine diesel engines\n \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\n 🔌 Function\n\u003c\/h2\u003e\n\u003cp\u003e\n Provides the threaded clamping element of a bolted joint, holding the assembly at its specified torque. Its grade and dimensions determine the clamping load the joint can carry.\n\u003c\/p\u003e\n\u003ch2\u003e\n ⚠️ Common Signs of Failure\n\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003e\n  Rounded or damaged hexagon flats\n \u003c\/li\u003e\n \u003cli\u003e\n  Thread damage, galling or seizing\n \u003c\/li\u003e\n \u003cli\u003e\n  Corrosion making removal difficult\n \u003c\/li\u003e\n \u003cli\u003e\n  Nut repeatedly loosening in service\n \u003c\/li\u003e\n \u003cli\u003e\n  Stretched or distorted after over-tightening\n \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\n 🛠️ Service Notes\n\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003e\n  Check the stud or bolt thread is clean and undamaged and run the nut down by hand first; grit on the thread gives a false torque reading\n \u003c\/li\u003e\n \u003cli\u003e\n  Tighten to the torque in the workshop manual for your engine, following the specified sequence on multi-fastener joints and working round in stages so the load comes up evenly\n \u003c\/li\u003e\n \u003cli\u003e\n  Renew self-locking and all-metal locking nuts rather than reusing them — once the locking feature has been through a cycle it no longer holds reliably\n \u003c\/li\u003e\n \u003cli\u003e\n  Fit the washer, tab or locking arrangement that belongs with that joint; a locking device that was bent or crimped in service should be replaced, not straightened and reused\n \u003c\/li\u003e\n \u003cli\u003e\n  Marine-grade anti-seize on stainless threads reduces galling and makes later removal possible, but keep it off threads that must take a locking compound\n \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\n 🔄 Supersession \u0026amp; Cross Reference\n\u003c\/h2\u003e\n\u003ch3\u003e\n Other-Brand OEM Numbers\n\u003c\/h3\u003e\n\u003cul\u003e\n \u003cli\u003e\n  VOE21686478\n \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\n 📦 Condition\n\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003e\n  Genuine Volvo Penta part\n \u003c\/li\u003e\n \u003cli\u003e\n  Brand new\n \u003c\/li\u003e\n \u003cli\u003e\n  Supplied in original or equivalent packaging\n \u003c\/li\u003e\n\u003c\/ul\u003e\n","brand":"Volvo Penta","offers":[{"title":"Default Title","offer_id":53385504293156,"sku":"341610W","price":10.35,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0994\/8115\/7924\/files\/original_13504e36-f1f6-46b4-984b-40dcc37ac7ab.jpg?v=1788062521","url":"https:\/\/www.sawleysautoandmarine.com.au\/products\/21686478-hexagon-nut-genuine-volvo-penta","provider":"Sawley's Auto and Marine","version":"1.0","type":"link"}