Hinge Terminology

Custom, continuous and butt hinge terminology

Overview / Dimensions

Hinge Length

Continuous hinges and butt hinges can be cut to exact length as required. Hinges should, however, be designed to a length that is a multiple of the knuckle length to eliminate partial knuckles. If a partial knuckle length cannot be avoided, please keep the following points in mind:

partial knuckle lengths should be the same as or larger than the knuckle diameter;
when partial knuckles are required on both ends, they should be on the same leaf;
continuous hinges and butt hinges with partial-end knuckles on one leaf may not rotate as freely as full-end knuckles;

Full-End Knuckle Hinge Length

Partial-End Knuckle Hinge Length

Hinge Pin Retention

All continuous hinges and butt hinges can be done in any of the following methods:

Crimped Ends Hinge Pin Retention

Headed Pins Hinge Pin Retention

Plain Ends Hinge Pin Retention

Spun Ends Hinge Pin Retention

Staked Pin Hinge Pin Retention

Welded Pin Hinge Pin Retention

Custom Hinge Piercing

Many designs for piercing are available. When ordering or requesting a quote, please include a print or sketch of your hinge illustrating hinge dimensions, hole diameter and type, hole centers, edge dimensions, and end dimensions.

Countersink Custom Hinge Piercing

Obround Custom Hinge Piercing

Square-Holes-Notch Radius Custom Hinge Piercing

Formed Leaves

Formed hinge leaves can be manufactured in a variety of configurations. Dimensions should be taken from the pin center line and inside of forms. If unequal leaf forming is required, specify dimensions for each leaf.