Hinge Terminology 101 at Guden

Knuckle: This term is used for the segments in the center of the hinge wrapped around the pin.  They may also be called Joints or Curls.  The hinge is created by these alternating portions that wrap around and each leaf to the pin and rotate around it. The size or length of the knuckles is measured parallel to the pin and the more standard lengths are .50″, .625″, 1.00″, 2.00″ with the more uncommon lengths being .75″ and 1.50″. We sometimes have the ability to provide different knuckle lengths depending on the overall size of the hinge. The dimension of the knuckle across the pin is the barrel diameter, not to be confused with the knuckle length.