You should consider the pitch when choosing a hinge. Hinges are available in sizes. Some of them have bigger leafs than others. The knuckle, however, may also vary in size. Most hinges consist of two leafs and a knuckle. By referring to the pitch, you can determine the size of a hinge’s knuckle.
Hinge Pitch Explained
The pitch of a hinge represents the distance from the end of the knuckle to the next-closest knuckle ring on the same leaf.
The knuckle is the central part of a hinge. It consists of interlocking rings found on the edge of the leafs. When you press the two leafs together, these knuckle rings will interlock. You can then secure the rings in this locked position by inserting a pin through the center of the knuckle. Hinge pitch is simply a measurement of how far apart the knuckle rings are.
Pitch vs Total Length
Some people assume that the pitch of a hinge refers to the total length of the hinge’s knuckle, but this isn’t the case. Pitch is a measurement of the distance between the knuckle rings. It specifically refers to the distance between the end of the knuckle and the adjacent knuckle ring on the same leaf. The higher the pitch, the farther apart the end of the knuckle will be from the adjacent knuckle ring on the same leaf.
The total length of a knuckle, conversely, refers to the distance from the top end of the knuckle to the bottom end of the knuckle. It takes into account all of the knuckle rings, including the knuckle rings on both leafs.
How to Measure the Pitch of a Hinge
You can measure the pitch of a knuckle using a ruler or tape measure. Start at the top end of the knuckle and run the ruler or tape measure to the adjacent knuckle ring on the same leaf. The distance between the end of the knuckle and the adjacent knuckle ring on the same leaf is the pitch.
If you’re shopping for a hinge, alternatively, you can check its specifications to see if the pitch is listed. Hinges are often listed with measurement specifications, such as leaf length, leaf width, open width, gauge and pitch.
Hinges are available in different sizes. Rather than only considering the size of a hinge’s leafs, you should consider the size of the hinge’s leafs and its knuckle. Pitch provides insight into the size of a hinge’s knuckle.