8 Sets Square U Bolts 3 Inch Wide, M12 x 3-1/16"W x 7-5/16"L Stainless Steel U Bolt Heavy Duty with Nuts, Rustproof for Commercial Trailer, Ship Deck & Heavy Equipment Fastening

About this item

• [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 8 heavy duty u-bolts 3-1/16 inch wide, 8 thickened frame plates, 16 flat washers, 16 split lock washers, 16 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 3-1/16" thread length. Paired with reinforced locking plates, it effectively absorbs severe road vibration and prevents self-loosening.
• [SIMPLE BOLT-ON MOUNTING] Dimensions - Inner Width: 3-1/16", Overall Length: 7-5/16". 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.