Marine Fasteners RP-85 Hex Cap Screw 5/16-18 x 3 in Stainless Steel 10-Pack

The Marine Fasteners RP-85 is a pack of 10 hex cap screws sized 5/16-18 x 3 inches, engineered for reliable performance in marine and saltwater environments. These fasteners feature a standard UNC (Unified National Coarse) thread pattern and are designed to resist the corrosion and moisture exposure common in boating and marine applications.

Key Features:

• Thread Size: 5/16-18 (5/16 inch diameter, 18 threads per inch — UNC)
• Length: 3 inches
• Head Style: Hex cap (six-sided head for wrench or socket installation)
• Quantity: 10 pieces per pack
• Ideal for marine, boat, and saltwater-exposed applications
• Compatible with standard 5/16-18 UNC nuts and threaded inserts

These hex cap screws are a go-to choice for boat builders, marine mechanics, and DIY enthusiasts who need dependable fasteners that hold up in wet and corrosive conditions. The coarse UNC thread pattern provides strong holding power and easy installation even in field conditions.