What is the part number for the 12E72 Tailpiece? March 11, 2026 20:42 Updated Question What is the part number for the tailpiece? Answer A40100 Additional Information Rim Cylinder Item Part Number Qty. Description 1 A06831 1 Spacer for 6-pin cores 2 C00121 1 7-pin cylinder 3 See T61839 pg. 2-10 1 Cylinder ring 4 A40110 1 Throw plug assembly 5 A40100 1 Spindle 6 A40109 1 Throw plug retainer 7 A14553 2 Retainer screw 8 C13910 1 Clamp plate 9 A08544 2 Mounting screw Related to Tailpiece Related articles What is the template number for the 45H Mortise lock? BEST Throw Members E Series Mortise and Rim Cylinders Can the 8K knob be installed on a 9K chassis? Commercial Hardware Mortise Cylinder Configurations for BEST 45 H and 45HW