which are usually formed apertures or holes 104 a 104 b 104 c and 104 d whereby the leaves are individually mounted to a door or frame or the like the leaves 102 of a butt or barrel hinge have interfitting axially aligned knuckles 106 a 106 b 106 c 106 d and 106 e along their opposed marginal edges for receiving a pintle or pin 107 therethrough so that the leaves are swingable one with respect to the other on the pintle or pin 107 the leaves 102 a and 102 b are generally rectangular although any shape is possible the holes 104 a d are of suitable construction and relative placement to mount the door and are dependent on the type of installation e g size weight profile loads etc the axially aligned spaced knuckles 106 a e may vary in number with one being the minimum possible per leaf and are adapted to receive therebetween or adjacent thereto a knuckle from on the opposed edge of said other leaf the axially aligned knuckles 106 a e receive the shank portion 108 of the pintle or pin 107 having a head 110 the head 110 keeps the pin from dropping out through the knuckles of the leaves due to the action of gravity thereupon the pin or pintle should be at least as long as the axially aligned knuckles but it may be variable in length to accommodate decorative caps or the like turning.