{"product_id":"fastronix-solutions-3-8-thru-panel-battery-terminal-connectors-usa-made-440a-continuous-nylon-backing-nut","title":"Fastronix Solutions 3\/8\" Thru-Panel Battery Terminal Connectors — USA Made, 440A Continuous, Nylon Backing Nut","description":"\u003cp\u003e\u003cstrong\u003eFastronix Premium 3\/8\" Thru-Panel Battery Terminal Connectors deliver a compact, US-made power connection rated for heavy-duty 12V use with 3\/8\" studs and an internal copper core.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThese thru-panel terminals are designed for installers and builders who need a reliable power post that passes through metal or composite panels without risk of shorting. Built in the USA by Fastronix Solutions, the parts combine a high-current copper conductor with a non-conductive backing nut so you can mount them into panels up to 7\/16\" thick using a 1-17\/64\" hole. They are intended for battery systems, marine builds, off-grid equipment, and any application requiring a neat, secure external post for positive or negative connections.\u003c\/p\u003e\n\n\u003ch3\u003eHow much current can these terminals handle?\u003c\/h3\u003e\n\u003cp\u003eThese 3\/8\" studs are rated for continuous 440 amps at 12 volts and can tolerate short, momentary peaks up to 550 amps. The inner copper core helps ensure low resistance and reliable conduction under load.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eContinuous rating: 440 A at 12 V\u003c\/li\u003e\n  \u003cli\u003eMomentary peak capacity: 550 A\u003c\/li\u003e\n  \u003cli\u003e3\/8\" threaded stud for common cable lug compatibility\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat panel sizes and hole dimensions are required to install them?\u003c\/h3\u003e\n\u003cp\u003eInstall these thru-panel posts into panels up to 7\/16\" (0.4375\") thick. The body is sized to fit a 1-17\/64\" hole, giving a tidy, flush fit for most dash, bulkhead, or enclosure applications.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eMaximum panel thickness: 7\/16\"\u003c\/li\u003e\n  \u003cli\u003eRequired hole diameter: 1-17\/64\"\u003c\/li\u003e\n  \u003cli\u003eDesigned to sit flush for low-profile installations\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow is electrical safety and insulation handled in metal panels?\u003c\/h3\u003e\n\u003cp\u003eRather than leaving the conductive rear exposed, these terminals incorporate a durable nylon backing nut that prevents stray shorts when installed in metal enclosures. That non-conductive backing lets you mount the terminal in steel or aluminum panels without adding extra insulating washers.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eNylon backing nut prevents contact with panel metal\u003c\/li\u003e\n  \u003cli\u003eEliminates the need for separate insulating hardware in many installs\u003c\/li\u003e\n  \u003cli\u003eRobust construction suited to vibration-prone environments\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat accessories or finishes work best with these posts?\u003c\/h3\u003e\n\u003cp\u003eThe posts are compatible with standard 3\/8\" battery cable lugs and pair neatly with Fastronix rubber terminal covers (models 404-110 and 404-111) for a finished, protected connection. Use these covers to guard against accidental shorts and to give the installation a professional look.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eCompatible with 3\/8\" cable lugs and ring terminals\u003c\/li\u003e\n  \u003cli\u003eRecommended covers: Fastronix 404-110 and 404-111\u003c\/li\u003e\n  \u003cli\u003eInner copper core supports heavy-gauge cables\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for? Installers, hobbyists, and OEMs who need a compact, high-current thru-panel post will value these Fastronix connectors. They are suited for marine electrical panels, vehicle power distribution, solar or battery enclosures, portable power stations, and any project requiring a secure exterior power post with built-in insulation. If you want USA-made components that simplify panel mounting while supporting heavy 12V loads, these terminals are a practical, installer-friendly choice.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can these terminals be used on both positive and negative battery posts?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. The 3\/8\" studs work as either positive or negative thru-panel posts; use appropriate marking and covers for polarity.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Do I need additional insulating washers for metal panels?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Usually no. The included nylon backing nut prevents shorts when installed in metal panels, removing the need for extra insulators.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Fastronix Solutions","offers":[{"title":"Default Title","offer_id":55168459112791,"sku":"B079K5HB79","price":52.95,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1050\/1524\/7191\/files\/fastronix-front-view-thru-panel-terminal.jpg?v=1790404619","url":"https:\/\/britishgarage.co.uk\/products\/fastronix-solutions-3-8-thru-panel-battery-terminal-connectors-usa-made-440a-continuous-nylon-backing-nut","provider":"British Garage","version":"1.0","type":"link"}