6 Best Self Piercing Rivets For Quick Field Repairs On Feeders

A split seam on a metal feeder can quickly turn a productive morning into a race against wasted grain and frustrated livestock. While welding isn’t always an option in the middle of a muddy paddock, self-piercing rivets (SPRs) provide a high-strength, mechanical bond without the need for pre-drilling holes. Mastering these small but mighty fasteners ensures that equipment stays in service longer and feed stays where it belongs.

Disclosure: As an Amazon Associate, this site earns from qualifying purchases. Thank you!

Henrob Steel SPRs: Best for Heavy Feeders

When dealing with large-capacity gravity feeders or heavy-gauge steel troughs, structural integrity is non-negotiable. Henrob steel rivets are engineered to pierce through multiple layers of thick metal while creating a water-tight seal that resists the sheer force of shifting grain loads. Their unique geometry allows them to “mushroom” perfectly within the bottom layer of material, providing a mechanical interlock that is often stronger than the surrounding metal.

These rivets excel in applications where the metal thickness exceeds standard lightweight sheeting. Because they are made from high-carbon hardened steel, they can drive through tough alloys that would bend or deform cheaper alternatives. This makes them particularly useful for repairing the structural frame of a feeder rather than just the cosmetic skin.

If the repair involves a high-pressure point on a large-animal feeder that takes a daily beating, Henrob is the necessary choice. They provide a level of permanence that matches factory-spec assembly. This is the rivet for anyone rebuilding a heavy-duty hog feeder or a bulk grain bin where failure is not an option.

Bollhoff Rivset SKR: Best for Galvanized Steel

Galvanized steel is the backbone of the hobby farm, but it presents a specific challenge: any breach in the zinc coating invites rust. Bollhoff Rivset SKR rivets are designed with a specific coating that complements galvanized surfaces, ensuring the repair doesn’t become the starting point for corrosion. The piercing process is remarkably clean, which minimizes the amount of raw steel exposed during the set.

The SKR series features a specialized head design that sits flush against the feeder wall, preventing livestock from catching their hides or ears on sharp edges. This flush fit also reduces the likelihood of feed getting trapped behind the rivet head, which can lead to mold and localized rot. These rivets work exceptionally well with the thin-to-medium gauges found in most standard poultry and sheep feeders.

Choose the Bollhoff Rivset if the goal is to maintain the weather-resistant properties of a galvanized finish. They are the premier option for outdoor equipment that must survive seasons of rain and snow without showing orange streaks of oxidation. This is the right product for those who value the longevity of their equipment’s finish as much as its function.

Huck Magna-Lite Aluminum Rivets: Best for Rust

In high-moisture environments or coastal areas, steel fasteners often fail long before the panels they hold together. Huck Magna-Lite aluminum rivets solve this by offering total immunity to red rust while remaining surprisingly strong for their weight. Aluminum is naturally softer than steel, which makes these rivets much easier to set using basic hand tools in the field.

These rivets are particularly effective for repairing aluminum feeders or thin-gauge sheet metal where a heavy steel rivet might over-compress and distort the panel. The Magna-Lite system ensures a wide footprint on the “blind” side of the repair, which helps distribute the load and prevents the rivet from pulling through soft or aged metal. This makes them ideal for older equipment where the metal might be slightly thinned by years of use.

For any repair situated in a damp barn or a frequently washed-down milking parlor, these aluminum rivets are the gold standard. They provide a clean, professional look that stays bright over time. If the repair is on a lightweight chicken waterer or a portable mineral feeder, these are the smartest buy.

POP Avdel System SPRs: Most Reliable Grip

Vibration is the silent killer of many field repairs, as livestock bumping and nudging a feeder can eventually wiggle standard fasteners loose. The POP Avdel system is renowned for its exceptional “clamping force,” which pulls the two metal sheets together tightly before the rivet fully sets. This tension ensures there is zero play in the joint, even after years of physical abuse from hungry animals.

The reliability of these rivets comes from their consistent deformation during installation. You get the same result every time, regardless of whether the metal is slightly uneven or dirty. This predictability is a massive advantage when working in less-than-ideal field conditions where you cannot perfectly prep every surface.

Select the POP Avdel system if the repair is on a gate-mounted feeder or any equipment that experiences constant movement. Their ability to maintain a tight grip under mechanical stress makes them a favorite for structural repairs on mobile equipment. These are the rivets for those who only want to fix a problem once.

Sherex Steel Rivets: Best Value for Farm Repairs

Hobby farming requires a careful balance of quality and cost, and Sherex steel rivets hit the sweet spot for general maintenance. These fasteners provide industrial-grade performance without the specialized pricing often associated with high-end proprietary systems. They are compatible with a wide range of universal SPR tools, making them the most versatile option for a mixed-use workshop.

While they may lack some of the specialized coatings of more expensive brands, their raw strength is undeniable. They are perfect for internal baffles, lid hinges, and non-structural panels where basic, reliable fastening is all that is required. Keeping a bulk box of Sherex rivets in the tractor toolbox ensures a quick fix is always within reach for those “good enough” repairs.

These are the best option for the budget-conscious farmer who needs to maintain a large fleet of feeders and troughs. They offer a significant upgrade over traditional pop-rivets without breaking the bank. If the project is a straightforward repair on standard mild steel, Sherex is the most practical choice.

Goebel High-Strength SPRs: Best for High Tension

Some feeder seams are under constant tension, particularly near the base of a cone-bottom bin or around the pivot points of an automatic feeder lid. Goebel High-Strength SPRs are engineered with a higher shear-strength rating than standard rivets. This allows them to withstand the “pulling apart” forces that often cause cheaper rivets to snap or pop out of the hole.

The secret to Goebel’s strength lies in the alloy composition and the precision-engineered hollow shank. When the rivet is driven, it displaces the metal in a way that creates a cold-weld effect, effectively fusing the layers together mechanically. This results in a joint that can handle the weight of hundreds of pounds of grain pressing against a single seam.

Choose Goebel when the repair is located at a corner or a load-bearing joint. These rivets are designed for high-stress applications where the safety of the livestock and the security of the feed supply depend on the hardware. They are the ultimate “peace of mind” fastener for critical equipment failures.

How to Match Rivet Materials to Your Feeder Metal

Matching the rivet material to the feeder metal is the most important step in preventing galvanic corrosion. When two dissimilar metals—like aluminum and steel—touch in a wet environment, a small electrical current flows between them, causing the weaker metal to disappear. To avoid this, follow these general rules: * Use steel rivets for steel feeders. * Use aluminum rivets for aluminum feeders. * Use stainless steel or specially coated rivets when joining two different types of metal.

The thickness of the metal, or the “grip range,” is the next crucial factor. If a rivet is too short, it will not have enough material to curl and lock into the bottom plate. Conversely, a rivet that is too long will fail to pull the sheets together tightly, leaving a gap that allows moisture to enter and feed to leak. Always measure the total thickness of the two sheets being joined and select a rivet with a shank length roughly 2mm longer than that total.

Consider the environment where the feeder lives. Indoor feeders can get away with standard steel fasteners, but anything living in a pasture needs high-performance coatings. Zinc-plated or chrome-finished rivets offer a baseline of protection, while stainless steel is the only true “set it and forget it” solution for high-acid environments, such as those found near silage or animal waste.

Essential Tools for Hand-Setting Rivets in the Field

Standard pop-rivet guns will not work for self-piercing rivets because SPRs require a massive amount of “squeeze” to drive through solid metal. For field repairs, a manual C-frame riveter is the most practical tool. These tools use a screw-drive or a long-handle lever system to multiply force, allowing a person to set a rivet with hand power alone.

A portable anvil or a heavy backing block is also necessary if the repair area is not easily accessible with a C-frame tool. The metal being joined must be supported from behind so it doesn’t flex away while the rivet is being driven. A solid backing ensures the rivet “flares” correctly inside the metal rather than just denting the panel.

• Manual C-frame press: The primary tool for driving the rivet.
• Locking pliers (Vice-Grips): Essential for holding the seams together before the first rivet is set.
• Ball-peen hammer: Useful for flattening any jagged edges of the broken seam before starting.
• Wire brush: Necessary for cleaning rust and old feed away from the repair site to ensure a tight seal.

Step-by-Step Guide to Replacing Broken Feeder Seams

The first step in any repair is cleaning the work area. Use a wire brush or a damp rag to remove all feed dust, rust flakes, and oils from the overlapping metal sheets. If the metal is bent, use a pair of pliers or a hammer against a flat block to straighten the edges as much as possible; a tight fit between the sheets is the key to a successful rivet.

Once the metal is clean and flat, use locking pliers to clamp the two sheets exactly where they need to be joined. This prevents the metal from shifting while you are applying the high pressure required to set the first rivet. Place your first rivet at one end of the break, and the second at the opposite end, to “stitch” the seam into alignment before filling in the middle.

Position the C-frame tool so the rivet is on the “outside” (the side that will be visible) and the die is on the “inside.” Squeeze the tool steadily until you feel the rivet bottom out and the resistance increases sharply. Inspect the “button” on the back side; it should be a clean, circular flare that is firmly embedded in the metal. If the rivet spins or feels loose, it hasn’t flared enough and needs more pressure.

Prevention Tips to Keep Metal Feeders From Rusting

Rust is the primary cause of seam failure, and it usually starts from the inside out. Moisture trapped in the bottom of a feeder mixes with grain dust to create a corrosive paste that eats through protective coatings. To prevent this, ensure the feeder is under a lean-to or has a well-fitting lid, and always clear out the “fines” (the dusty remains of feed) at least once a month.

If you notice the protective zinc coating starting to dull or show small brown spots, apply a coat of cold galvanizing spray. This spray contains high concentrations of zinc and acts as a sacrificial layer, stopping rust before it reaches the structural steel. Focus on the seams and the areas where the metal was bent during manufacturing, as these are the most vulnerable spots.

• Keep the feeder off the bare ground by placing it on a concrete pad or wooden skids.
• Check for “sweating” or condensation inside the bin during temperature swings.
• Inspect all rivets and bolts annually for signs of movement or orange “bleeding” stains.
• Apply a thin layer of food-grade mineral oil to the interior seams of feeders used for high-moisture supplements.

High-quality repairs are what keep a hobby farm running smoothly when time and budgets are tight. By choosing the right self-piercing rivet and taking a few minutes to prep the surface correctly, you can turn a catastrophic equipment failure into a minor footnote in your weekend chores. Reliable tools and fasteners aren’t just an expense; they are an investment in the continued health of your animals and the efficiency of your operation.