{"product_id":"square-u-bolts-m12-3-1-16in-w-x-7-5-16in-l-heavy-duty","title":"Square U Bolts M12 3-1\/16in W x 7-5\/16in L - Heavy Duty","description":"\u003cp\u003eIn this review of the square U bolts set, the bottom line is simple: these are a practical, heavy duty fastener kit for anyone who needs reliable clamps for square beams or shafts. The set is aimed at installers, mechanics, and fabricators who want corrosion resistance and a complete set of hardware; the single biggest reason to buy is the use of \u003cstrong\u003e304 stainless steel\u003c\/strong\u003e, which offers long term rust and moisture resistance for outdoor and marine use. The kit also arrives with frame plates, washers, nuts and a wrench so it is ready for immediate use.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003eSize:\u003c\/strong\u003e The U bolts measure about M12 in diameter and 3-1\/16in wide by 7-5\/16in long, which fits standard 3in x 6in square beams and shafts when matched to ID.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eComplete kit:\u003c\/strong\u003e The package includes 4 U bolts, 4 frame plates, 8 flat washers, 8 lock washers, 8 nuts and 1 wrench, giving a full replacement or repair set without hunting for parts.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Made from 304 stainless steel, the clamps deliver strong corrosion and moisture resistance suitable for outdoor, automotive and marine exposure.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eVersatile use:\u003c\/strong\u003e The square U-bolt design works well for fastening pipes, wood, trailers and automotive mounting points in industrial and maintenance settings.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eInstallation guidance:\u003c\/strong\u003e The manufacturer recommends using oil and a manual wrench to protect threads, which helps maintain longevity of the fasteners.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWho It's For\u003c\/h2\u003e\n\u003cp\u003eThis set is well suited to DIYers, mechanics, and small shop fabricators who need a reliable, corrosion-resistant clamp for square beams and shafts. If you regularly work on trailers, sailboats, or outdoor structures, the \u003cstrong\u003e304 stainless\u003c\/strong\u003e composition and included hardware make this an efficient choice when replacing or adding fasteners.\u003c\/p\u003e\n\u003cp\u003eThose who should look elsewhere are users who need metric variations other than M12 or significantly different lengths or widths; also buyers who rely exclusively on power tools for rapid assembly may prefer fasteners finished to tighter thread cleanliness standards, since some users report mixed thread condition on arrival.\u003c\/p\u003e\n\u003ch2\u003ePros \u0026amp; Cons\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003ePros\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n \u003cli\u003eDurable 304 stainless steel construction provides strong rust resistance and longevity.\u003c\/li\u003e\n \u003cli\u003eComprehensive kit with plates, washers, nuts and a wrench simplifies installation and replacement.\u003c\/li\u003e\n \u003cli\u003eDesigned specifically for 3in x 6in square beams, offering a snug fit when sizes are confirmed.\u003c\/li\u003e\n \u003cli\u003eGood value for heavy duty applications compared with sourcing individual components.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n \u003cli\u003eSome customers report occasional issues with thread cleanliness, requiring hand cleaning before installation.\u003c\/li\u003e\n \u003cli\u003eAvoid using high-speed impact tools on the nuts to prevent thread damage, which adds time to installation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n \u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eSRZTXU\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eU-bolt diameter\u003c\/td\u003e\n\u003ctd\u003eM12\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eWidth\u003c\/td\u003e\n\u003ctd\u003e3-1\/16in (fits 3in x 6in beam)\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eLength\u003c\/td\u003e\n\u003ctd\u003e7-5\/16in\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003e304 stainless steel\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eKit contents\u003c\/td\u003e\n\u003ctd\u003e4 U bolts, 4 plates, 8 flat washers, 8 lock washers, 8 nuts, 1 wrench\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch2\u003eOur Verdict\u003c\/h2\u003e\n\u003cp\u003eThis square U-bolt set offers practical value for anyone needing heavy duty, corrosion-resistant clamps for square beams and shafts. It is a cost-effective kit that covers installation with plates and washers included; buy it if you need durable fasteners for outdoor, automotive or marine use, but plan to inspect and lightly clean threads before assembly to ensure the smoothest installation.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eWill these U bolts fit a 3in square beam?\u003c\/strong\u003e\u003cbr\u003eYes, the 3-1\/16in width is intended to fit 3in x 6in square beams and shafts when matched to the U-bolt ID.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAre the bolts corrosion resistant?\u003c\/strong\u003e\u003cbr\u003eYes, the U bolts are made of 304 stainless steel, which provides good resistance to rust and moisture for most outdoor and marine applications.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs any extra hardware needed?\u003c\/strong\u003e\u003cbr\u003eNo, the set includes plates, flat and lock washers, nuts and a wrench, so no additional hardware is normally required for standard installations.\u003c\/p\u003e","brand":"SRZTXU","offers":[{"title":"Default Title","offer_id":48651188928731,"sku":"B0F18X7J1M","price":35.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/71zTaLNrqKL._SL1500.jpg?v=1778559238","url":"https:\/\/gearmusthave.com\/products\/square-u-bolts-m12-3-1-16in-w-x-7-5-16in-l-heavy-duty","provider":"GearMustHave","version":"1.0","type":"link"}