Wichard 65341W Black Watertight U-Bolt 8mm Diameter 80mm Length 316L Stainless Steel

The Wichard 65341W Black Watertight U-Bolt is a premium marine-grade fastening solution engineered for demanding on-deck applications. Constructed from 316L stainless steel via a fully drop-forged process, this 8mm (5/16") diameter U-bolt delivers exceptional strength and corrosion resistance in saltwater environments.

A standout feature is the integrated black rubber watertight collar, which creates a complete seal around deck penetrations — eliminating the need for silicone sealant in most installations. The collar also dampens vibration and prevents the rattling common with traditional U-bolts. This hardware is ideal for securing shrouds, lifelines, blocks, and other rigging and deck fittings.

Key Features:

• Fully drop-forged from high-quality 316L stainless steel for maximum strength and corrosion resistance
• Outstanding working and breaking loads — Working Load: 5,291 lbs (2,400 kg) / Breaking Load: 10,580 lbs (4,800 kg)
• Complete water-tightness provided by integrated resistant rubber collar — no sealant required
• Black collar color for a clean, professional appearance on deck
• Eliminates noise and vibration at the deck interface
• Delivered complete with mounting bolts and counter-plate (backing plate)
• Max tightening torque: 18 Nm

Specifications:

• Material: 316L Stainless Steel
• Collar Color: Black
• Wire/Rod Diameter: 8mm (5/16")
• Overall Length: 80mm (3-5/32")
• Dimension A (inside span): 36mm (1-27/64")
• Dimension B: 30mm (1-3/16")
• Dimension C: 40mm (1-9/16")
• Weight: 0.251 lbs (114 g)
• Working Load: 5,291 lbs (2,400 kg)
• Breaking Load: 10,580 lbs (4,800 kg)

Trusted by sailors and marine professionals worldwide, Wichard watertight U-bolts are the go-to choice for clean, strong, and leak-free deck hardware installations.