{"product_id":"copper-standard-barrel-compression-lug-4-awg-1-2-stud-125a-90-c","title":"4 AWG Copper Compression Lug, 1\/2\" Stud, 1-Hole, Standard Barrel","description":"\u003cdiv\u003e\n\u003cdiv\u003eCrimp It Right\u003c\/div\u003e\n\u003cdiv\u003e4 AWG → Die Index 29 \u003cspan\u003e\u003c\/span\u003e Gray\u003c\/div\u003e\n\u003cdiv\u003eThis lug crimps with any \u003cstrong\u003e12-ton U-groove tool\u003c\/strong\u003e using the index-29 die — ours, or your matching die: Burndy® U4CRT — Milwaukee® 49-12-U004C — ILSCO® ILD-29, or T\u0026amp;B® Color-Keyed® index 29. The die embosses “29” into the finished crimp for inspection.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ca href=\"\/products\/compression-connector-die-kit\"\u003eGet the Matching Die\u003c\/a\u003e\u003ca href=\"\/products\/2-in-one-hydraulic-battery-powered-crimping-and-cutting-tool\"\u003eShop 12-Ton Crimpers\u003c\/a\u003e\u003ca href=\"\/pages\/lug-die-tool-cross-reference\"\u003eFull Die \u0026amp; Tool Chart\u003c\/a\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\u003cp\u003eThe Conversions Tech Copper Standard Barrel One-Hole Compression Lug is engineered for 4 AWG conductors in industrial, commercial, and residential electrical systems. The standard barrel design with integrated sight window enables visual confirmation of conductor seating during compression. Tin-plated copper construction provides corrosion resistance and reliable conductivity. Gray color coding supports quick field identification in complex panel layouts.\u003c\/p\u003e\u003ctable class=\"ctspec\"\u003e\n\u003ctr\u003e\u003ctd colspan=\"2\"\u003e\n\u003cstrong\u003eSpecifications\u003c\/strong\u003e\n\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePart number\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e210-98010A-25\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eConductor\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e4 AWG copper, Class B stranded\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eStud\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1\/2 in, 1 hole\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBarrel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eStandard, 0.69 in (E), chamfered entry, inspection window\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOverall length\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1.97 in (B)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTongue width\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.75 Inch\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDie\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eIndex 29, Gray, one crimp\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMaterial\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eElectrolytic copper, electro tin plated\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRating\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUL 486A, cULus, 90 C, 35 kV, 85 A at 75 C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eColor code\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eGray\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eConductor Size:\u003c\/strong\u003e 4 AWG\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStud\/Bolt Size:\u003c\/strong\u003e 1\/2\"\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Tin-plated copper\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length (L):\u003c\/strong\u003e 50mm (1.96\")\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNeck Length (L1):\u003c\/strong\u003e 28.7mm (1.13\")\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOuter Diameter (D):\u003c\/strong\u003e 17.8mm (0.70\")\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInner Diameter (D1):\u003c\/strong\u003e 9.1mm (0.36\")\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHole Diameter (D2):\u003c\/strong\u003e 7.1mm (0.28\")\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWidth (B):\u003c\/strong\u003e 17.5mm (0.69\")\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHole Spacing (E):\u003c\/strong\u003e 13.1mm (0.52\")\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThickness (F):\u003c\/strong\u003e 1.4mm (0.06\")\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTemperature Rating:\u003c\/strong\u003e 90°C\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVoltage Rating:\u003c\/strong\u003e 35 kV\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMax Amp Rating:\u003c\/strong\u003e 125A\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor Code:\u003c\/strong\u003e Gray\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFeatures:\u003c\/strong\u003e Sight window for visual inspection\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCertifications:\u003c\/strong\u003e UL Listed, CE Certified, RoHS Compliant\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat crimping tool is required for this 4 AWG compression lug?\u003c\/summary\u003e\n\u003cp\u003eUse a compression tool with a die set rated for 4 AWG copper lugs. The standard barrel design requires proper die selection to achieve the specified compression force without over-crimping. Verify tool compatibility with UL 486A\/B requirements.\u003c\/p\u003e\u003c\/details\u003e\n\n\u003cdetails\u003e\u003csummary\u003eIs this lug suitable for 90°C rated conductors?\u003c\/summary\u003e\n\u003cp\u003eYes. The 90°C temperature rating matches standard THHN\/THWN-2 and XHHW-2 insulated conductors. Do not exceed 125A continuous current per the maximum ampacity rating.\u003c\/p\u003e\u003c\/details\u003e\n\n\u003cdetails\u003e\u003csummary\u003eCan the sight window confirm full conductor insertion?\u003c\/summary\u003e\n\u003cp\u003eYes. The sight window provides visual verification that the conductor is fully seated to the proper depth before compression. This reduces installation errors and rework in field conditions.\u003c\/p\u003e\u003c\/details\u003e\u003cdiv\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePart Number\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e210-98010A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCategory\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eElectrical connector\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.25 lb\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c!--CTXREF--\u003e\u003cdiv class=\"ct-xref\" style=\"margin-top:24px;border-top:3px solid #E86A1D;padding-top:16px\"\u003e\n\u003ch3 style=\"color:#0A2240;margin:0 0 4px\"\u003eCross-Reference — One-Hole Standard Barrel, 4 AWG, 1\/2 in. stud\u003c\/h3\u003e\n\u003cp style=\"margin:4px 0 10px\"\u003eThis lug crosses to the following parts of the same conductor size, stud and barrel:\u003c\/p\u003e\n\u003ctable border=\"1\" cellpadding=\"6\" style=\"border-collapse:collapse;border-color:#d8dee5\"\u003e\n\u003ctr style=\"background:#0A2240;color:#fff\"\u003e\n\u003cth align=\"left\"\u003eManufacturer\u003c\/th\u003e\n\u003cth align=\"left\"\u003ePart Number\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBurndy (Hubbell)\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eYA4CL6\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePanduit\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eLCA4-12-L\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eILSCO\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eCSWS-4-12\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003cp style=\"font-size:12px;color:#555;margin-top:8px\"\u003eCrosses by conductor size, stud and barrel from each manufacturer's published catalog. Confirm the die index for your tooling. Trademarks belong to their respective owners and are used for compatibility identification only.\u003c\/p\u003e\n\u003c\/div\u003e\u003c!--\/CTXREF--\u003e","brand":"Conversions Tech","offers":[{"title":"Default Title","offer_id":67797516058676,"sku":"CT-SB412","price":1.03,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0291\/8445\/8804\/files\/copper-short-barrel-one-hole-compression-lugs-4-awg-1-2-inch-bolt-size-1157095883.jpg?v=1745384656","url":"https:\/\/conversionstech.com\/products\/copper-standard-barrel-compression-lug-4-awg-1-2-stud-125a-90-c","provider":"Conversions Tech","version":"1.0","type":"link"}