Kora
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$12.54
M5 x 78mm U Bolt Marine Hardware – A4 316 Stainless Steel Round Bend U-Bolt with Nuts & Plate for Boat Deck, Yacht Rigging, Pipe Clamp, Trailer & Outdoor Fixing
★★★★★
$12.54
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1
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About this item
- A4-316 MARINE GRADE STAINLESS STEEL – MAXIMUM CORROSION RESISTANCE FOR OFFSHORE & COASTAL USE Manufactured from A4-316 stainless steel — the premium marine-grade alloy containing molybdenum for dramatically superior protection against saltwater corrosion, rust, and pitting compared to standard 304-grade or zinc-plated alternatives. Built to withstand permanent exposure to the harshest offshore and coastal conditions without degradation, these M5 U bolts are the professional's choice for any marine installation where long-term reliability is non-negotiable.
- COMPLETE KIT – U BOLT, BACKING PLATE & NUTS INCLUDED Each U bolt comes supplied as a complete fastening kit, including the M5 round bend U bolt, a stainless steel backing plate, and two stainless steel nuts — everything needed for immediate installation without additional hardware purchases. The backing plate distributes load evenly across the mounting surface, preventing pull-through and providing a secure, professional-grade fixing point on boat decks, transoms, and structural panels.
- M5 x 78mm ROUND BEND DESIGN – VERSATILE PIPE, CABLE & DECK FIXING The round bend M5 x 78mm configuration is ideal for securing round pipes, conduits, cables, and structural components to flat surfaces. Suitable for a wide range of pipe and tube diameters, the smooth round profile prevents cutting or chafing of the secured item, making it equally at home for marine deck hardware, boat trailer components, pipe clamps, rope guide fixings, and antenna mounts.
- HEAVY DUTY LOAD BEARING – SUITABLE FOR STRUCTURAL & SAFETY-CRITICAL DECK APPLICATIONS Precision-threaded M5 stainless steel shanks provide high tensile strength and reliable load-bearing performance for deck cleats, rope guides, fender fixings, mooring hardware, guard rail stanchion bases, and other structural marine deck applications. The secure nut-and-plate system maintains clamping force under vibration and dynamic loads encountered at sea, ensuring fixings remain secure in all conditions.
- VERSATILE BEYOND MARINE USE – TRAILERS, ROOF RACKS, PIPEWORK & INDUSTRIAL FIXING Engineered to marine-grade specification but highly versatile across a wide range of applications. Use these M5 x 78mm stainless U bolts for boat trailer components, roof rack and load bar mounting, automotive and RV pipework, agricultural fencing, antenna and aerial masts, conduit securing, and any structural outdoor fixing where a heavy-duty, corrosion-proof U bolt is required.
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What customers say about Bigamart
10 Trustpilot reviews total, with 2 shown at a time.
Trustpilot
★★★★★
Excellent
4.5 average rating
S
Sigalit
🇮🇱 · January 2026
★★★★★
I wrote to Bigamart's customer support and they accompanied the process of reshipping the item until it finally arrived. I felt a genuine effort to solve the problem till it was finally solved.
V
Verified buyer
🇦🇺 · November 2025
★★★★★
The package was here in Australia from England in a few days — so quick! Something was missing and they refunded it straight away. Pretty happy with these guys.
Showing 1–2 of 10 reviews
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