10 Piece Large Trailer Coupler Pin Set Heavy Duty Hitch Pin Locking Pin 5 Sixteenth Inch By Two And Three Quarter Inch 8x70mm Zinc Plated Carbon Steel Outdoor Use Rust Resistant And Secure Trailer Hitch

Heavy Duty Trailer Coupler Pins, 10 Pack Zinc Plated
✔️ 5/16, 3/8, 15/32 in dia; 2-3/4 or 3-5/32 in long; 10 pcs

These heavy-duty trailer coupler pins are built from carbon steel with a durable zinc plating, ideal for outdoor trailer connectors, farm equipment, and watercraft towing. They resist rust and stay secure under vibration and weather exposure.

✅ Carbon steel body with zinc plating resists rust and corrosion
✅ Sizes: 5/16 in x 2-3/4 in; 3/8 in x 2-3/4 in; 15/32 in x 3-5/32 in (8×70 mm, 9.5×70 mm, 12×80 mm)
✅ Square shaft locking pin with spring steel retainer clip for easy use
✅ Sturdy construction resists loosening during motion and loads
✅ Suitable for trailer couplers, farming gear, trucks, and boats

💡 What is a square shaft locking pin used for in trailer couplers? This handy hardware locks coupler latches securely during towing and rough riding. - durable carbon steel with zinc plating for outdoor use - fits 5/16, 3/8, and 15/32 in diameters with 70-80 mm lengths - spring steel retainer clip keeps the pin in place - prevents loosening under vibration and movement