Marine Fasteners RP-1437 #12 Silicon Bronze Finish Washer Countersunk 100-Pack

The Marine Fasteners RP-1437 is a #12 silicon bronze finish washer, sold in a convenient 100-piece bag. Also commonly referred to as countersunk washers, flange washers, or finish washers, these are designed for installations where a clean, polished appearance matters. The flat head screw recesses neatly into the washer's countersunk seat, delivering a flush, professional finish while gripping fabric, fiberglass, and other light materials securely around the fastener hole.

Silicon bronze is a premium non-ferrous alloy prized in marine environments for its excellent corrosion resistance, particularly in saltwater and high-humidity conditions. It offers a warm, attractive appearance that complements brightwork and traditional wooden boat construction where aesthetics are as important as function.

Key Features:

• Screw size: #12
• Material: Silicon bronze — excellent corrosion resistance for marine and outdoor use
• Style: Finish washer (countersunk / flange washer)
• Quantity: 100 per bag
• Ideal for visible, decorative fastening applications
• Compatible with flat-head and oval-head screws
• Suitable for wood, fiberglass, and light material installations

The RP-1437 finish washers are well-suited for boat interior and exterior trim work, upholstery fastening, cabinetry, and any application where a neat, corrosion-resistant finish is required. Sourced from Marine Fasteners (Würth Industry USA), a leading supplier of marine-grade fasteners.