{"product_id":"u-bolts-5-pack-1-2-in-x-3-1-16-in-x-4-5-16-in-square-u-bolts-durable","title":"U Bolts 5 Pack 1\/2 in x 3-1\/16 in x 4-5\/16 in Square U-Bolts - Durable","description":"\u003cp\u003eOur review of these U bolts covers whether they are a practical replacement for trailer and marine hardware. The bottom line: these 1\/2 in square U-bolts are best for DIYers and boat trailer owners who need corrosion-resistant fasteners that match an exact outer diameter. The pack of five arrives with plates and nuts ready for installation, and the stainless construction delivers the main advantage: longevity in salt water and coastal environments where regular steel would quickly fail.\u003c\/p\u003e\n\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSize and fit:\u003c\/strong\u003e The 1\/2 in diameter with a 3-1\/16 in internal width and 4-5\/16 in internal depth provides a precise fit for square beams and shafts when you confirm your OD.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread length:\u003c\/strong\u003e The 2.6 in thread length gives enough engagement for secure clamping with the included hex nuts and mounting plates.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial durability:\u003c\/strong\u003e Constructed from stainless steel, these U bolts resist rust and corrosion for long service life in fresh and salt water conditions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eComplete kit:\u003c\/strong\u003e Each set includes five U bolts, five plates and ten hex nuts so you get everything needed for immediate replacement.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVersatile use:\u003c\/strong\u003e They work on boat trailers, marine trailers, plumbing, pipe runs and general outdoor or industrial fastening where a square U-bolt is required.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWho It's For\u003c\/h2\u003e\n\u003cp\u003eThis pack is ideal for boat owners, trailer repairers and maintenance-minded DIYers who need replacement U-bolts that will withstand coastal exposure and occasional wet conditions. The stainless build and included hardware make it convenient for small fleets or multiple repair tasks.\u003c\/p\u003e\n\n\u003cp\u003eThose who should look elsewhere are installers who need a different inside diameter, a round U-bolt profile, or a different thread length; always verify the OD of the part you are replacing against the 3-1\/16 in ID listed before buying.\u003c\/p\u003e\n\n\u003ch2\u003ePros \u0026amp; Cons\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003ePros\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eStainless steel construction provides strong resistance to rust and corrosion in marine environments.\u003c\/li\u003e\n\u003cli\u003eIncludes plates and extra nuts so installations can proceed without additional purchases.\u003c\/li\u003e\n\u003cli\u003ePrecise dimensions make it straightforward to match to existing square beams and shafts.\u003c\/li\u003e\n\u003cli\u003eFive-bolt pack is convenient for multiple repairs or spare parts storage.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eOnly suitable when the 3-1\/16 in internal width matches your project; not interchangeable with round or different-size U-bolts.\u003c\/li\u003e\n\u003cli\u003eThe listing requires buyers to verify OD sizes from images, so measuring before buying is necessary.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eDiameter\u003c\/td\u003e\n\u003ctd\u003e1\/2 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInternal width (ID)\u003c\/td\u003e\n\u003ctd\u003e3-1\/16 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInternal depth\u003c\/td\u003e\n\u003ctd\u003e4-5\/16 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThread length\u003c\/td\u003e\n\u003ctd\u003e2.6 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eStainless steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePack contents\u003c\/td\u003e\n\u003ctd\u003e5 U-bolts, 5 plates, 10 hex nuts\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eOur Verdict\u003c\/h2\u003e\n\u003cp\u003eThese square U bolts are a solid value for anyone needing corrosion-resistant fasteners for trailers and marine use; the stainless steel and included hardware save time and reduce the need for separate purchases. Confirm the 3-1\/16 in ID before ordering and they perform as durable, practical replacements for square-beam mounts.\u003c\/p\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eAre the nuts and plates included?\u003c\/strong\u003e\u003cbr\u003eYes, the pack includes five mounting plates and ten hex nuts so you have everything required for installation.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWill these resist salt water corrosion?\u003c\/strong\u003e\u003cbr\u003eYes, the stainless steel construction is specified for strong rust prevention and corrosion resistance in salt water and coastal conditions.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow do I know they will fit my trailer?\u003c\/strong\u003e\u003cbr\u003eMeasure the outer diameter or beam width on your trailer and compare it to the 3-1\/16 in internal width shown to ensure a tight fit.\u003c\/p\u003e","brand":"LIONMAX","offers":[{"title":"Default Title","offer_id":48195638067419,"sku":"B0DZGY74DL","price":39.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/71WRFHFNnyL._SL1500.jpg?v=1770309632","url":"https:\/\/gearmusthave.com\/products\/u-bolts-5-pack-1-2-in-x-3-1-16-in-x-4-5-16-in-square-u-bolts-durable","provider":"GearMustHave","version":"1.0","type":"link"}