Harken 57mm Fixed Mastbase Block (1988)
Compact, low-profile solution for mastbase halyard routing
The Harken 57mm Fixed Mastbase Block is a low-profile lead block designed for efficient halyard and control line deflection at the base of the mast. Ideal for boats where multiple lines converge at deck level, it offers a compact footprint that allows several blocks to be grouped closely together, streamlining deck layouts without adding unnecessary weight.
Constructed with lightweight yet durable materials, this block ensures smooth, low-friction operation under load, making it a dependable choice for high-load halyard leads and static deflection points in performance sailing setups.
Specifications
| Width (mm) | 35 |
| Length (mm) | 81 |
| Recommended line - Max Ø (mm) | 10 |
| Sheave Ø (mm) | 57 |
| Height (mm) | 73 |
| SWL (kg) | 1136 |
| NBL (kg) | 2273 |
| Weight (g) | 175 |
To install this Web App in your iPhone/iPad press
and then Add to Home Screen.
