Agri-Fab 43850 Pin, Roll 1/8 by 5/8

What It Is

The Agri-Fab 43850 is a 1/8-inch by 5/8-inch roll pin used to secure the hitch pin assembly on tow-behind lawn mower attachments, such as spreaders, dump carts, and lawn rollers. It acts as a locking retainer to prevent the hitch pin from sliding out during operation.

Fitment & Compatibility

This pin fits Agri-Fab tow-behind attachments that use a 1/8-inch diameter roll pin with a 5/8-inch length. Before buying:

• Measure your existing pin: The diameter is 1/8 inch (0.125") and the length is 5/8 inch (0.625"). Verify these measurements on your current pin or hitch assembly.
• Check your attachment model: Common compatibles include Agri-Fab 45-0298, 45-0299, and 45-0300 spreaders, as well as many dump carts and lawn rollers from the same brand.
• OEM vs aftermarket: This is an OEM Agri-Fab part (part number 43850). Aftermarket alternatives exist but may vary in hardness or fit. If you need an exact match, stick with OEM.
• Not universal: This pin is not designed for zero-turn mowers, riding mower decks, or push mowers. It’s strictly for hitch pins on tow-behind attachments.

Key Things to Know

• Quality: Made from hardened steel for durability. The 5.0 rating (1 review) suggests it meets expectations for a simple, functional part.
• Installation difficulty: Very easy—just tap it into the hitch pin hole with a small hammer or punch. No tools beyond a hammer are needed.
• Common gotcha: Roll pins can be tricky to remove if they’re tight. Use a roll pin punch (not a standard nail punch) to avoid damaging the pin or hitch.
• Single pin: The price ($6.17) covers one pin, not a pack. If you have multiple attachments, consider buying a few spares.

Should You Buy It

If you own an Agri-Fab tow-behind attachment and your original roll pin is lost, bent, or broken, this is an exact, affordable replacement. It’s also a good spare to keep on hand if you frequently hitch/unhitch attachments. Skip it if your pin size differs or if you’re working on a non-Agri-Fab brand—measure first.