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Zvaofuy 4 Sets M12 U Bolts 2-1/16"W x 4-1/2"L Heavy Duty Steel Kit for Boat Dock Pipe, Small Trailer & DIY Woodworking Hardware — Open-Box, 15% Off
Brand: Zvaofuy
Condition: Used
$2356
$2769
-15% Save $413
Updated: 2 days ago
Description
[HEAVY DUTY TRAILER AXLE FIT] Designed specifically for rectangular structures. This u-bolt kit provides a perfect, snug fit for boat trailers, RV bumpers, and truck axle leaf springs, ensuring absolute structural stability under heavy towing loads.
[MARINE-GRADE 304 STAINLESS STEEL] Manufactured from premium 304 stainless steel for exceptional rust and saltwater corrosion resistance. Built to endure severe marine environments without snapping, cracking, or stripping threads over long-term use.
[ALL-IN-ONE HARDWARE KIT] Each set includes 4 heavy duty u-bolts 2-1/16 inch wide, 4 thickened frame plates, 8 flat washers, 8 split lock washers, 8 hex nuts, and 1 wrench. Ready for immediate out-of-the-box installation with zero extra trips to the hardware store.
[ANTI-LOOSENING PRECISION THREADS] Features standard M12 precision threads (approx. 1/2" diameter) with a 2-1/2" thread length. Paired with reinforced locking plates, it effectively absorbs severe road vibration and prevents self-loosening.
[SIMPLE BOLT-ON MOUNTING] Dimensions - Inner Width: 2-1/16", Overall Length: 4-1/2". Ideal for securing bend tubes and wood beams. Installation Tip: Hand-tighten with the included wrench to prevent thread galling or damage from power tools.
[AFTER-SALES SUPPORT] Our professional U-Bolts hardware service team stands behind your purchase. We provide lifelong technical guidance. Reach out anytime for issues about installation, size matching or missing accessories, and we will reply within 24 hours.
Zvaofuy Heavy Duty Marine-Grade Square U-Bolts Kit — The Ultimate Securing Solution for Your Trailer & Heavy Hardware
Are you worried about rusted, snapped, or loose hardware on your boat trailer frame when hauling on the highway? Zvaofuy Heavy Duty U-Bolts are meticulously engineered from premium 304 stainless steel to deliver unmatched tensile strength and superior rust protection, keeping your heavy cargo completely secure under the toughest coastal, marine, and road conditions.
PRODUCT ADVANTAGES & CORES
Marine-Grade Anti-Rust: High-density 304 stainless steel ensures excellent performance in wet, humid, and salty marine environments without oxidizing.
Vibration-Proof Security: Supplied with dual washers (flat & lock washers) and heavy-duty frame plates to distribute clamping force evenly and resist severe road shock.
Precision Thread Integrity: Deep, standard M12 threading ensures smooth torque application and a secure hold that will not strip during manual tightening.
TECHNICAL SPECIFICATIONS
Shape: Round or Bend
Material: SAE 304 Stainless Steel
Thread Size: M12 (1/2" Compatible)
Inner Width: 2-1/16 inches
Overall Length: 4-1/2 inches
Thread Length: 2-1/2 inches
Application Scope: 2x2, 2x3, 2x4 Bend Tubing / Leaf Springs
FREQUENTLY ASKED QUESTIONS
Q: Can these U-bolts be safely used on saltwater boat trailers?
A: Yes, absolutely! Zvaofuy u-bolts are forged from genuine marine-grade 304 stainless steel. They offer superior resistance to salt corrosion, acid, and moisture, making them the premier choice for sailboat, ski boat, jet ski trailers, and coastal industrial equipment.
Q: What size crossmember or beam does this u bolt kit fit?
A: With a precise 2-1/16-inch inner width and 4-1/2" overall length, this kit is specifically designed to wrap around standard 2-1/16" wide bend or round objects, such as 2x2, 2x3, or 2x4 metal trailer frames, wood beams, and utility truck axles.
Q: Can I use an impact wrench to speed up the installation?
A: To ensure long-lasting thread durability, we strongly recommend hand-tightening the nuts with our included custom manual wrench. Avoid using high-speed power tools or impact wrenches, as excessive friction heat can cause stainless steel threads to wear, seize, or break.
Q: What kind of warranty and customer service does Zvaofuy provide?
A: We fully stand behind our hardware quality. Zvaofuy supplies standard product warranty and lifelong technical support. For size mismatch, shipping damage or installation guidance needs, feel free to contact our support team, we will respond and assist you within 12 hours.
Are you worried about rusted, snapped, or loose hardware on your boat trailer frame when hauling on the highway? Zvaofuy Heavy Duty U-Bolts are meticulously engineered from premium 304 stainless steel to deliver unmatched tensile strength and superior rust protection, keeping your heavy cargo completely secure under the toughest coastal, marine, and road conditions.
PRODUCT ADVANTAGES & CORES
Marine-Grade Anti-Rust: High-density 304 stainless steel ensures excellent performance in wet, humid, and salty marine environments without oxidizing.
Vibration-Proof Security: Supplied with dual washers (flat & lock washers) and heavy-duty frame plates to distribute clamping force evenly and resist severe road shock.
Precision Thread Integrity: Deep, standard M12 threading ensures smooth torque application and a secure hold that will not strip during manual tightening.
TECHNICAL SPECIFICATIONS
Shape: Round or Bend
Material: SAE 304 Stainless Steel
Thread Size: M12 (1/2" Compatible)
Inner Width: 2-1/16 inches
Overall Length: 4-1/2 inches
Thread Length: 2-1/2 inches
Application Scope: 2x2, 2x3, 2x4 Bend Tubing / Leaf Springs
FREQUENTLY ASKED QUESTIONS
Q: Can these U-bolts be safely used on saltwater boat trailers?
A: Yes, absolutely! Zvaofuy u-bolts are forged from genuine marine-grade 304 stainless steel. They offer superior resistance to salt corrosion, acid, and moisture, making them the premier choice for sailboat, ski boat, jet ski trailers, and coastal industrial equipment.
Q: What size crossmember or beam does this u bolt kit fit?
A: With a precise 2-1/16-inch inner width and 4-1/2" overall length, this kit is specifically designed to wrap around standard 2-1/16" wide bend or round objects, such as 2x2, 2x3, or 2x4 metal trailer frames, wood beams, and utility truck axles.
Q: Can I use an impact wrench to speed up the installation?
A: To ensure long-lasting thread durability, we strongly recommend hand-tightening the nuts with our included custom manual wrench. Avoid using high-speed power tools or impact wrenches, as excessive friction heat can cause stainless steel threads to wear, seize, or break.
Q: What kind of warranty and customer service does Zvaofuy provide?
A: We fully stand behind our hardware quality. Zvaofuy supplies standard product warranty and lifelong technical support. For size mismatch, shipping damage or installation guidance needs, feel free to contact our support team, we will respond and assist you within 12 hours.
Sold by
Amazon Warehouse
Official Amazon outlet for open-box & returned items
- Backed by Amazon's A-to-Z Guarantee
- 30-day return policy
- Ships from Amazon fulfillment centers
- Price verified on Amazon
Product Details
- SKU:
- awhd-us-b0gv8mvc64
- Model:
- M12 x 2-1/16"W x 4-1/2"L
- Country:
- US
- ASIN:
- B0GV8MVC64
Shopping Smarter
Common questions about buying open-box and refurbished.
Why buy refurbished or open-box?
Refurbished and open-box products offer the same performance as new at a fraction of the price. You're already saving $4 on this listing. They've been inspected, tested, and are ready to use — the only difference is the price tag. Buying refurbished also reduces electronic waste, extending product life cycles and keeping functional devices out of landfills.
What's the difference between open-box and refurbished?
Open-box products are customer returns that have been inspected and confirmed functional. They may show little to no use — often the item was returned simply because the buyer changed their mind. Refurbished products have been professionally repaired or restored by technicians, tested to meet or exceed manufacturer specifications, and sometimes come with a warranty. Both are a smart alternative to buying new.
Why use OpenBoxFox?
Finding refurbished deals is time-consuming — you'd have to check Amazon Warehouse, Reebelo, Dyson Outlet, and others separately for Zvaofuy products. OpenBoxFox aggregates these listings in one place, so you can compare and find the best deal without the legwork. We update pricing daily so you always see current availability and real savings.
Is it safe to buy refurbished?
Yes. Products listed on OpenBoxFox come from established retailers like Amazon, Reebelo, and Dyson — not unknown third-party sellers. Each retailer has buyer protection policies, return windows, and in some cases warranties. You get the price advantage of used goods with the purchase security of a known retailer.
