When you mount a wheel, axle, or other rotating or sliding component, you want to be sure it stays securely in place. That’s where a lynch pin comes into play. A lynch pin—sometimes spelled “linchpin”—is a locking pin inserted crosswise through the end of an axle or shaft so the wheel or attached part cannot slide off.
Unlike standard bolts or screws, which can loosen under shear forces or vibration, lynch pins use a self-locking, spring-tempered ring that snaps firmly into place—creating a quick-locking, quick-release securing method.
How Lynch Pins Work & What Makes Them Superior
- Self-locking mechanism: The ring loop snaps over the axle end once the pin is inserted, holding it securely—no cotter pins, clips, or tools needed.
- Resistance to shear and vibration: Designed to resist movement and stress where equipment turns or vibrates.
- Speed and convenience: Faster to install and remove than a clevis-and-cotter setup, simplifying routine maintenance.
Common Uses and Applications
- Wheels on trailers, carts, or wagons—keeping wheels on their axles under load or vibration.
- Agricultural and landscaping equipment—securing implements on tractor hitches and similar attachments.
- Machinery that requires quick assembly or frequent maintenance.
- Industrial fixtures where reliable yet non-permanent fastening is preferred.
Why Choose Allied Bolt & Screw Lynch Pins
Allied Bolt & Screw offers durable lynch pins with corrosion-resistant finishes for long service life, plus quick-locking rings for faster install and removal. Whether you need standard sizes for general use or heavy-duty options for demanding jobs, our pins combine reliability, safety, and ease of use.
Choosing the Right Lynch Pin
- Material & finish: Opt for corrosion-resistant finishes (e.g., zinc with chromate) for outdoor or high-moisture environments.
- Diameter & length: Match the axle or shaft size and ensure full engagement through the hole.
- Load demands: Select heavier-duty pins for higher stress applications.
- Maintenance needs: Quick-locking designs save time when parts are frequently adjusted.
Final Thoughts
Small but mission-critical, lynch pins provide secure, quick-locking, vibration-resistant fastening that many bolts and screws can’t match in dynamic applications. For dependable performance on trailers, tractors, and industrial equipment, choose Allied Bolt & Screw.
