What Is A Hinge Knuckle?

A hinge knuckle is the hollow circular part at the joint of a hinge through which a pin is passed. The knuckle can also be called a loop, joint, node, or curl, but knuckle is the most common name.

The knuckle is the articulating point for the hinge – it is the swiveling socket that operates the rest of the hinge and the material the hinge connects. The knuckle bears the weight that the whole hinge is expected to operate. A smoothly opening and closing door depends upon a hinge’s knuckle.

Does Knuckle Size Matter?

The knuckle size coincides with the pin size. The larger the knuckle, the more weight it can hold. If you are using hinges to attach a door to its frame, you need a larger hinge with a larger knuckle to bear the weight of the door. Alternatively, if you are attaching doors to a kitchen cabinet, you will require smaller hinges because there is less weight for the hinges to bear.

It is extremely rare for a hinge’s knuckle to break. However, because shorter knuckle length bears less weight, it is possible for builders to underestimate the weight of the surfaces attached to a hinge. This extra weight on such a small knuckle will break the hinge. It is up to a builder’s discretion to choose the appropriate knuckle size for the project.

How Do I Find What I Need?

Specialized knuckles move heavy loads more easily. Marlboro Hinge & Laser, part of Marlboro Manufacturing, customizes hinges for your satisfaction. Whatever your project and whatever your hinge requirements, we can fulfill your expectations. We customize continuous hinges, butt hinges, slip joint hinges, weld-on hinges, strap hinges, and specialty hinges designed by you.

Ask for Help

To experience over fifty years of expertise at your personal disposal, contact Marlboro Hinge & Laser with your hinge queries today. We are known nationally and internationally for solving hinge dilemmas. Try us out for yourself to see the Marlboro difference!

Scroll down for more information