{"product_id":"bartell-12-0840-locknut-m8-zinc-oem-replacement-part","title":"Bartell 12-0840 Locknut M8 Zinc - OEM Replacement Part","description":"\u003cp\u003eSecuring critical fastened joints against vibration-induced loosening, this M8 zinc-plated locknut is a structural fastener used throughout the frame assembly and main grinder body of Bartell Predator series planetary grinders. Technicians servicing these machines will encounter this nut in high-count quantities across two key assemblies: eight are specified in the main grinder assembly and twelve are used in the 800 frame assembly alone, making it one of the most frequently needed hardware items during a full teardown or rebuild.\u003c\/p\u003e\u003cp\u003eIn the frame assembly, these locknuts are used in conjunction with M8 socket head cap screws at suspension, axle, and structural connection points, areas subject to constant operational vibration and load cycling. The zinc coating provides corrosion resistance appropriate for wet grinding environments where water suppression systems are active. When replacing worn or stripped locknuts, always install new units rather than reusing old ones, as the nylon locking element degrades with heat and repeated torque cycles and will not provide reliable retention if reused.\u003c\/p\u003e\u003cp\u003eInspect these fasteners any time the frame is disassembled, swing weight assemblies are serviced, or after any impact event. Do not substitute with standard hex nuts, as the locking feature is essential for maintaining joint integrity under continuous machine vibration.\u003c\/p\u003e\u003cp\u003eCompatible with the following Bartell Predator series models:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eP650E\u003c\/li\u003e\n\u003cli\u003eP650PRO\u003c\/li\u003e\n\u003cli\u003eP800E\u003c\/li\u003e\n\u003cli\u003eP800PRO\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eGenuine Bartell Global OEM part, sold by an authorized dealer.\u003c\/p\u003e","brand":"Bartell","offers":[{"title":"Default Title","offer_id":43412755185712,"sku":"12-0840","price":47.09,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0679\/6574\/7248\/files\/12-0840.jpg?v=1784313523","url":"https:\/\/cce-industries.com\/products\/bartell-12-0840-locknut-m8-zinc-oem-replacement-part","provider":"CCE Industries","version":"1.0","type":"link"}