{"product_id":"harken-6221-80mm-single-element-block-mastbase-with-swivel","title":"Harken 6221 80mm Single Element Block Mastbase with Swivel","description":"\u003cp\u003e\u003cstrong\u003e80mm Single Element Block Mastbase with Swivel\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eElement blocks introduce sideplates that combine forged aluminum and compound curves for strength. They are simultaneously contemporary and very robust. Elements design pairs the minimum amount of metal required to protect the sheave with a proven journal bearing. So size for size, Element is priced significantly lower, than our previously least expensive blocks.\u003cbr\u003e\u003cbr\u003eSideplates are hardcoat-anodized to resist corrosion. A tough composite bearing sheave resists corrosion for a long service life. \u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSpecifications:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eSheave: 80mm (3-1\/8\")\u003c\/li\u003e\n\u003cli\u003eMax Line: 16mm (5\/8\")\u003c\/li\u003e\n\u003cli\u003eMax Working Load: 2200kg (4850lbs)\u003c\/li\u003e\n\u003c\/ul\u003e \u003c!--- cis2:m2lsl5xp ---\u003e\n\u003cp\u003eThe Harken 6221 80mm Single Element Block Mastbase with Swivel is designed for sailing applications that require dependable line handling, corrosion resistance, and a robust, streamlined block design. Its swivel mastbase configuration helps support flexible line direction, while the Element construction delivers practical performance with less metal surrounding the sheave.\u003c\/p\u003e\u003cp\u003eEngineered with forged aluminum sideplates and compound curves, the Harken Element block combines structural strength with a contemporary profile. The sideplates are hardcoat-anodized to resist corrosion, making this sailing block suitable for marine environments. A tough composite bearing sheave also resists corrosion and supports long service life. The proven journal bearing provides reliable operation for compatible sailboat rigging systems.\u003c\/p\u003e\u003cp\u003eThe 80mm sheave accommodates line up to 16mm, or 5\/8 inch, and supports a maximum working load of 4,850 pounds. Use the Harken 6221 as a mastbase block for sailboat control lines and other marine rigging applications that require a single-element block with a swivel. Its combination of forged aluminum construction, corrosion-resistant components, and compact design makes it a practical choice for sailors, riggers, and boat owners maintaining or upgrading their deck hardware.\u003c\/p\u003e\u003ch3\u003eKey Features:\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSingle-element mastbase block:\u003c\/strong\u003e Provides a compact solution for sailboat line handling and deck hardware applications.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSwivel configuration:\u003c\/strong\u003e Allows the block to support flexible line direction during operation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eForged aluminum sideplates:\u003c\/strong\u003e Combine strength with a streamlined Element design.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCorrosion-resistant construction:\u003c\/strong\u003e Hardcoat-anodized sideplates and a composite bearing sheave help withstand marine conditions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProven journal bearing:\u003c\/strong\u003e Supports dependable block operation for compatible rigging systems.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh working-load capacity:\u003c\/strong\u003e Supports a maximum working load of 4,850 pounds.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eProduct Details:\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Harken\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e 6221\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Single-element block mastbase with swivel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSheave Diameter:\u003c\/strong\u003e 80mm (3-1\/8 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum Line Size:\u003c\/strong\u003e 16mm (5\/8 inch)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum Working Load:\u003c\/strong\u003e 2,200kg (4,850 pounds)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSideplate Material:\u003c\/strong\u003e Forged aluminum with hardcoat anodized finish\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBearing Sheave:\u003c\/strong\u003e Composite\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eChoose the Harken 6221 Element mastbase block when your sailing or marine rigging setup calls for a corrosion-resistant 80mm block with a swivel and substantial working-load capacity.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSEO Meta Description:\u003c\/strong\u003e Shop the Harken 6221 80mm single-element mastbase block with swivel, corrosion-resistant construction, and a 4,850-pound maximum working load.\u003c\/p\u003e\u003cstyle\u003etable.productattributes, .productattributes td { border-bottom: 1px solid #ddd; border-collapse: collapse; padding: 2px; text-align: left; }\u003c\/style\u003e\n\u003ctable class=\"productattributes\"\u003e\n\u003cthead\u003e\u003ctr\u003e\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\u003ctd\u003eTruck Freight: No\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eOversized: No\u003c\/td\u003e\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003cbr\u003e","brand":"Harken","offers":[{"title":"Default Title","offer_id":44937070706777,"sku":"86595","price":122.97,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0623\/1818\/2489\/files\/86595XL.jpg?v=1789837492","url":"https:\/\/www.marinepartsonly.com\/products\/harken-6221-80mm-single-element-block-mastbase-with-swivel","provider":"Marine Parts Only","version":"1.0","type":"link"}