Trailer Suspension Hardware
(4) Four 6-1/2" Square Axle U-Bolts 1/2" Diameter with Plates & Nuts
Complete square u-bolt kit for 2" x 3" boat trailer axles. Includes four 1/2" diameter square u-bolts, eight nuts, and two u-bolt plates for a full axle hardware replacement setup.
Part Number: UBK-2000-SQ-612
Fits 2" x 3" Axle Tubes
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Overview
This kit is built for 2" x 3" tube axles found on many larger boat trailers. It includes the square u-bolts, matching nuts, and two u-bolt plates needed to secure the axle to the spring seat hardware.
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At a Glance
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R&P Knowledge Hub
Axle size: This kit is intended for 2" x 3" tube axles.
Common use: Often used on many boat trailers with larger axle tubes.
Hardware layout: The kit supplies four square u-bolts, eight nuts, and two plates for a complete axle clamp hardware set.
Measurement note: The listed dimensions are the u-bolt inside measurements: 2" wide, 6-1/2" long, with 1/2" diameter rod.
R&P Repair Insight
Why sizing matters: Square u-bolt kits need to match the axle tube correctly. On this kit, the 2" inside width corresponds to a 2" wide tube, and the 6-1/2" inside length provides the longer leg needed for this axle style.
Before ordering: Confirm the axle tube size and compare your existing u-bolt dimensions before replacement so the hardware seats correctly with your plates and spring setup.
Features
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Complete Hardware Kit
Includes four square u-bolts, eight 1/2" nuts, and two u-bolt plates.
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Square Axle Fit
Designed for 2" x 3" moat tube axles used on many larger boat trailers.
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1/2" Diameter Rod
Built around 1/2" diameter square u-bolts for trailer suspension hardware replacement.
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Longer Leg Profile
6-1/2" inside length provides the longer reach needed for this axle and plate combination.
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Specifications
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Included Components
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Verify axle dimensions and compare all hardware measurements before installation.
