{"product_id":"conversions-tech-tinned-copper-compression-lug-4-awg-3-8-stud-copy","title":"Conversions Tech Copper Compression Lug – 4\/0 AWG, 3\/8″ Stud (Non-Tinned)","description":"\u003c!--\nSEO Meta Title:\nConversions Tech Copper Compression Lug 4\/0 AWG 3\/8\" Stud | Seamless Tubular (Non-Tinned)\n\nSEO Meta Description:\nConversions Tech 4\/0 AWG copper compression lug with 3\/8\" stud. Seamless tubular, non-tinned copper construction, 600V rated. Full technical specs + FAQs.\n--\u003e\n\u003csection class=\"ct-product\"\u003e\n\u003ch1\u003eConversions Tech Copper Compression Lug – 4\/0 AWG, 3\/8″ Stud (Non-Tinned)\u003c\/h1\u003e\n\u003cp\u003eThe \u003cstrong\u003eConversions Tech Copper Compression Lug\u003c\/strong\u003e is a seamless tubular, heavy-duty electrical connector engineered for \u003cstrong\u003e4\/0 AWG copper conductors\u003c\/strong\u003e and a \u003cstrong\u003e3\/8″ stud interface\u003c\/strong\u003e. Manufactured from high-purity, \u003cstrong\u003ebare (non-tinned) copper\u003c\/strong\u003e, this lug delivers maximum electrical conductivity and strong mechanical performance in controlled or indoor power distribution environments.\u003c\/p\u003e\n\u003cp\u003eThe \u003cstrong\u003eseamless barrel construction\u003c\/strong\u003e ensures uniform compression during crimping, reducing electrical resistance while improving pull-out strength and vibration resistance. The \u003cstrong\u003e3\/8″ stud ring\u003c\/strong\u003e is ideal for battery terminals, bus bars, grounding points, switchgear, and industrial distribution blocks where standard 3\/8″ hardware is used and tin plating is not required.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeamless tubular copper barrel\u003c\/strong\u003e for consistent compression and low joint resistance\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNon-tinned (bare) copper construction\u003c\/strong\u003e for maximum conductivity\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDesigned for 4\/0 AWG copper conductors\u003c\/strong\u003e (very high-current cabling)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e3\/8″ stud hole\u003c\/strong\u003e for secure bolted terminations\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRated up to 600V\u003c\/strong\u003e for power distribution and DC applications\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh mechanical strength\u003c\/strong\u003e for vibration and thermal cycling environments\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse;\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWire Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e4\/0 AWG\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eStud Size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3\/8″\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eStud Hole (Nominal)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.390″\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMaterial\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSeamless Copper (Non-Tinned)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFinish\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eBare Copper\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMaximum Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e600V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eConstruction Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSeamless Tubular\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eApplication\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCopper Cable Only\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003eDimensions\u003c\/h2\u003e\n\u003cp style=\"margin-top: 0;\"\u003eAll dimensions shown in inches. For this \u003cstrong\u003e4\/0 AWG seamless tubular series\u003c\/strong\u003e, lug body and barrel geometry remain consistent across stud sizes, with the \u003cstrong\u003estud hole changing to 0.390″ for the 3\/8″ stud version\u003c\/strong\u003e.\u003c\/p\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse;\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOverall Length (L)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2.360″\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWidth (W)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1.000″\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePad Thickness (T)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.114″\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTube Thickness (TT)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.059″\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBarrel Length (BL)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.840″\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBarrel Inside Diameter (ID)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.551″\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePad Length\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1.100″\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eStrip Length\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.830″\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eStud Hole (Nominal)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.390″\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003eTypical Applications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eIndoor battery cable terminations\u003c\/li\u003e\n\u003cli\u003eBus bars and switchgear\u003c\/li\u003e\n\u003cli\u003eGrounding and bonding systems\u003c\/li\u003e\n\u003cli\u003eIndustrial power distribution panels\u003c\/li\u003e\n\u003cli\u003eControlled-environment electrical rooms\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eUse a hydraulic or dieless compression crimp tool rated for \u003cstrong\u003e4\/0 AWG copper lugs\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eStrip conductor insulation to the specified strip length before crimping\u003c\/li\u003e\n\u003cli\u003eDo not use with aluminum conductors\u003c\/li\u003e\n\u003cli\u003eFor corrosive environments, use the \u003cstrong\u003etinned version\u003c\/strong\u003e or seal with heat shrink\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch2\u003eFrequently Asked Questions (FAQs)\u003c\/h2\u003e\n\u003cdetails\u003e\n\u003csummary\u003e\u003cstrong\u003eWhat wire size is this compression lug designed for?\u003c\/strong\u003e\u003c\/summary\u003e\n\u003cp\u003eThis lug is designed specifically for \u003cstrong\u003e4\/0 AWG copper conductors\u003c\/strong\u003e.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003e\u003cstrong\u003eWhat stud size does this lug fit?\u003c\/strong\u003e\u003c\/summary\u003e\n\u003cp\u003eIt is designed for a \u003cstrong\u003e3\/8″ stud\u003c\/strong\u003e and uses a nominal \u003cstrong\u003e0.390″ stud hole\u003c\/strong\u003e.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003e\u003cstrong\u003eIs this lug tinned or bare copper?\u003c\/strong\u003e\u003c\/summary\u003e\n\u003cp\u003eThis version is \u003cstrong\u003enon-tinned (bare) copper\u003c\/strong\u003e. A tinned option is available for corrosive environments.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003e\u003cstrong\u003eWhy choose non-tinned copper?\u003c\/strong\u003e\u003c\/summary\u003e\n\u003cp\u003eNon-tinned copper offers maximum conductivity and is commonly used in dry, indoor, or controlled environments.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003e\u003cstrong\u003eWhat voltage rating does this lug support?\u003c\/strong\u003e\u003c\/summary\u003e\n\u003cp\u003eThis lug is rated for applications up to \u003cstrong\u003e600V\u003c\/strong\u003e.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003e\u003cstrong\u003eWhat crimping tool should be used?\u003c\/strong\u003e\u003c\/summary\u003e\n\u003cp\u003eUse a \u003cstrong\u003ehydraulic or dieless compression crimp tool\u003c\/strong\u003e rated for 4\/0 AWG copper lugs and follow tool manufacturer guidance.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003e\u003cstrong\u003eWhat is the recommended strip length?\u003c\/strong\u003e\u003c\/summary\u003e\n\u003cp\u003eThe recommended strip length is \u003cstrong\u003e0.830″\u003c\/strong\u003e to ensure full conductor insertion.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003e\u003cstrong\u003eCan this lug be used outdoors?\u003c\/strong\u003e\u003c\/summary\u003e\n\u003cp\u003eThis bare copper version is best suited for indoor or controlled environments. For outdoor use, a tinned lug or sealed termination is recommended.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003e\u003cstrong\u003eIs this lug suitable for aluminum wire?\u003c\/strong\u003e\u003c\/summary\u003e\n\u003cp\u003eNo. This lug is designed for \u003cstrong\u003ecopper conductors only\u003c\/strong\u003e.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003e\u003cstrong\u003eDo dimensions change across stud sizes?\u003c\/strong\u003e\u003c\/summary\u003e\n\u003cp\u003eIn this seamless tubular 4\/0 series, the primary dimensional change is the \u003cstrong\u003estud hole size\u003c\/strong\u003e. Always verify tongue clearance requirements for your installation.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003c\/section\u003e","brand":"Conversions Tech","offers":[{"title":"Default Title","offer_id":47449561169972,"sku":"6221-040-038-NP","price":2.48,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0291\/8445\/8804\/files\/conversions-tech-copper-compression-lug-4-0-awg-3-8-stud-non-tinned-1218364752.png?v=1769563991","url":"https:\/\/conversionstech.com\/products\/conversions-tech-tinned-copper-compression-lug-4-awg-3-8-stud-copy","provider":"Conversions Tech","version":"1.0","type":"link"}