58X3U Bale Spear Bracket U-Bolt Assembly – 3-Inch Bale Spear Bracket Mount

The HAYSTIX® 58X3U 3-inch bale spear bracket mount is a serviceable hardware assembly for clamping a compatible bale-spear bracket to standard 3-inch × 3-inch square tubing. Each package includes one heavy-duty U-bolt, matching nuts, and flat washers for repair, replacement, retrofit, or new agricultural attachment projects.

The U-bolt wraps around the square frame tube and passes through the mounting points in the applicable bracket. Tightening the nuts clamps the bracket against the tubing without welding the bracket permanently to the frame. This makes the setup useful when a fabricator needs an adjustable or replaceable bracket connection on a tractor hay fork, skid steer bale mover, three-point frame, or custom feeding attachment.

Fits 3×3 Tubing and Compatible BU Spear Brackets

The 58X3U is sized for standard 3-inch × 3-inch square tubing and is commonly paired with these PRO-Link bracket systems:

• 155BU bale spear bracket
• 165BU bale spear bracket
• 175BU HAYSTIX® bracket

Those brackets serve different spear families and mounting configurations, so the U-bolt size alone does not determine which hay tine fits the finished attachment. Confirm the bracket model, spear diameter, cross-bolt arrangement, frame layout, and complete-system rating before assembling the parts.

Compatible bracket installations commonly use two 58X3U assemblies to hold one bracket securely against the frame tube. Because each product package contains one U-bolt with its matching nuts and flat washers, check the bracket’s hardware requirement and order the correct quantity for the installation. Do not assume that one package supplies a pair of U-bolts.

This removable bracket connection can support work on attachments used for:

• Moving round hay bales with a tractor or front-end loader
• Carrying square bales on a properly supported multi-spear frame
• Feeding livestock with a skid steer or three-point bale mover
• Handling haylage, silage, straw, or cornstalk bales
• Repairing compatible AG-GO hay-handling equipment
• Building custom agricultural frames around 3×3 square tubing

These are equipment and fabrication applications, not a universal-fit claim. The frame designer must verify spear spacing, bale support, machine connection, visibility, load center, and safe operating capacity.

Installation Checks for Repairs and Custom Fabrication

Before installing the assembly, measure the tubing and confirm that it is truly 3 inches square. Paint buildup, weld beads, dents, added plates, rounded corners, or oversized tubing can prevent the U-bolt and bracket from seating correctly. Inspect the frame tube for cracks, corrosion, crushing, or wall damage that could weaken the connection.

Position the bracket according to the attachment design, place the U-bolt evenly around the tubing, and install the supplied flat washers and matching nuts. Tighten the hardware evenly so the bracket remains square to the frame and the U-bolt legs are loaded consistently. Use the applicable installation instructions rather than assuming a universal torque value.

After the first operating cycles, recheck the nuts and bracket position. Regular inspections should look for:

• Loose or missing nuts and washers
• Bent, stretched, or damaged U-bolt legs
• Elongated bracket holes
• Bracket shifting or rotation
• Cracks or deformation in the 3×3 frame tube
• Corrosion or thread damage that affects nut engagement

Replace damaged hardware instead of straightening or mixing it with unidentified parts. Matching nuts and washers help maintain proper assembly, while corrosion-resistant high-strength steel supports continued outdoor agricultural use when the hardware is installed and maintained correctly.

The 58X3U does not establish the lifting capacity of the hay attachment. Safe capacity is limited by the lowest-rated part of the loader, quick-attach connection, frame, bracket, spear, cross bolt, U-bolt hardware, or other installed component. The assembly is covered by PRO-Link’s one-year limited warranty against manufacturer’s defects.

Questions & Answers

What comes with one 58X3U assembly?

One package includes a single heavy-duty U-bolt, matching nuts, and flat washers. If the selected bracket requires two U-bolts, two assemblies must be ordered.

Will the 58X3U fit every bale spear frame?

No. It is designed around standard 3-inch × 3-inch square tubing and compatible bracket mounting points. Measure the tubing and confirm the bracket model before ordering.

Which brackets use this U-bolt hardware?

The HAYSTIX® 58X3U 3-inch bale spear bracket mount is commonly used with the 155BU, 165BU, and 175BU brackets. Verify the required quantity and the complete bracket-and-spear configuration for the intended frame.