SCREW THUMB 10mm x 25mm

Screw Thumb 10mm x 25mm | Genuine Marine | Muir Australia

The Muir Screw Thumb 10mm x 25mm is a genuine factory replacement designed for Muir vertical windlasses. This precision-machined thumb screw allows quick, tool-free clutch adjustment, giving you reliable hand-operated control over chain release for anchoring, retrieval, and emergency manual operation.

Built for Marine Conditions

The Screw Thumb 10mm x 25mm is engineered from marine-grade stainless steel for outstanding corrosion resistance against saltwater, UV exposure, and harsh marine environments. The precision-machined 10mm x 25mm dimensions guarantee a perfect fit and consistent thread engagement, ensuring smooth, reliable adjustment every time.

Key Features

• Genuine Muir replacement thumb screw for vertical windlasses
• Precision dimensions: 10mm x 25mm
• Marine-grade stainless steel construction
• Excellent corrosion resistance in saltwater environments
• Tool-free hand operation for quick clutch adjustment
• Direct fit — no modifications required

Why Choose Genuine Muir Parts?

Choosing the authentic Screw Thumb 10mm x 25mm ensures perfect tolerances, reliable thread engagement, and long-term durability. Aftermarket thumb screws often use inferior steel grades that corrode, seize, or strip under load — risking damage to your windlass and unsafe anchoring conditions. Trust genuine Muir parts for dependable performance and full warranty support.

Order your replacement thumb screw today from Muir Australia — trusted marine engineering since 1968.