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

The HAYSTIX® 58X3U 3 inch bale spear bracket mount is a single U-bolt hardware assembly for fastening a compatible bale-spear bracket to 3 inch by 3 inch square frame tubing. Each package contains one U-bolt with its matching nuts and flat washers. It is useful for replacing worn hardware, adding a compatible bracket to a new frame, or servicing an existing tractor, loader, skid steer, or three-point hay attachment.

The U-bolt secures the bracket to the frame tube without welding the bracket permanently in place. It does not retain the bale spear inside the bracket. A separate cross-bolt passes through aligned holes in the bracket and spear to secure the tine. Understanding these two connections helps buyers order the correct hardware and inspect the right components during service.

Matching the 3 Inch Bale Spear Bracket Mount to the Correct Bracket

The 58X3U is commonly used with three PRO-Link bracket models:

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

These brackets do not all accept the same spear. The 155BU and 165BU serve verified 1.625 inch Hayspears® configurations, while the 175BU is used with compatible 1.75 inch HAYSTIX® cross-hole spears. Match the bracket model, spear diameter, straight mounting section, cross-hole location, frame layout, and required retaining bolt before assembling the system.

The listed bracket systems normally use two 58X3U assemblies to hold one bracket against the tubing. Because one 58X3U package supplies only one U-bolt assembly, two packages are needed when the bracket requires a pair. This arrangement is also documented in D&D Farm Supply’s 165BU bracket listing, which identifies two 58X3U assemblies with that bracket.

The hardware may be used on a properly designed tractor-loader hay fork, skid steer bale mover, three-point carrier, feeding frame, or custom agricultural attachment. Those examples do not establish universal fit. The completed attachment must provide suitable bracket placement, spear spacing, visibility, clearance, frame strength, coupler geometry, and machine capacity.

Installing and Inspecting the 58X3U U-Bolt Assembly

Measure the frame before ordering. Confirm that the mounting location is 3 inch by 3 inch square tubing and that its corner shape allows the U-bolt and bracket to seat evenly. Heavy paint, weld beads, dents, added plates, corrosion, crushed walls, or tubing with an incompatible corner radius can prevent correct contact.

Position the bracket according to the attachment design. Place each U-bolt evenly around the tubing, pass its legs through the bracket holes, and install the supplied flat washers and nuts. Tighten both sides gradually and evenly so the bracket remains square and does not shift or twist. Use the applicable bracket or attachment instructions for tightening; do not assume one torque value applies to every frame and installation.

After the first operating cycles, stop and recheck the nuts and bracket position. Regular inspections should look for loose hardware, stretched or bent U-bolt legs, damaged threads, missing washers, elongated bracket holes, bracket movement, and cracking or deformation in the frame tube. Replace damaged components rather than straightening them or mixing them with unidentified hardware.

The 58X3U does not determine the lifting capacity of a bale attachment. The lowest-rated component—including the spear, cross-bolt, bracket, U-bolts, frame, coupler, loader, and machine—sets the safe working limit. PRO-Link covers the assembly with a one-year limited warranty against manufacturer’s defects, subject to the complete terms.

Questions & Answers

What comes with one 58X3U assembly?

One package includes one U-bolt, its matching nuts, and flat washers. It does not include a bale-spear bracket, spear, cross-bolt, frame, or machine attachment.

How many 58X3U assemblies are needed for one bracket?

The compatible 155BU, 165BU, and 175BU bracket installations normally use two assemblies. Since this listing contains one U-bolt assembly, order two when the selected bracket requires a pair.

Does the 58X3U cross-bolt the spear into the bracket?

No. The 58X3U clamps the bracket to 3 inch by 3 inch tubing. A separate cross-bolt retains the compatible spear inside the bracket.