Harken 6221 80mm Single Element Block Mastbase with Swivel

80mm Single Element Block Mastbase with Swivel

Element 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.

Sideplates are hardcoat-anodized to resist corrosion. A tough composite bearing sheave resists corrosion for a long service life.

Specifications:

• Sheave: 80mm (3-1/8")
• Max Line: 16mm (5/8")
• Max Working Load: 2200kg (4850lbs)

The 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.

Engineered 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.

The 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.

Key Features:

• Single-element mastbase block: Provides a compact solution for sailboat line handling and deck hardware applications.
• Swivel configuration: Allows the block to support flexible line direction during operation.
• Forged aluminum sideplates: Combine strength with a streamlined Element design.
• Corrosion-resistant construction: Hardcoat-anodized sideplates and a composite bearing sheave help withstand marine conditions.
• Proven journal bearing: Supports dependable block operation for compatible rigging systems.
• High working-load capacity: Supports a maximum working load of 4,850 pounds.

Product Details:

• Brand: Harken
• Part Number: 6221
• Product Type: Single-element block mastbase with swivel
• Sheave Diameter: 80mm (3-1/8 inches)
• Maximum Line Size: 16mm (5/8 inch)
• Maximum Working Load: 2,200kg (4,850 pounds)
• Sideplate Material: Forged aluminum with hardcoat anodized finish
• Bearing Sheave: Composite

Choose 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.

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