Tir-Start Alternate Positioning
Shell Size
Key & Keyway Arrangement Identification Letter
AR� or AP� BSC
BR� or BP� BSC
CR� or CP� BSC.
DR� or DP� BSC.
N A B C D E
105 102 80 35 64 91
140 132 118 140 155 131
265 320 312 275 304 240
11, 13, and 15
95 113 90 53 119 51
141 156 145 156 146 141
208 182 195 220 176 184
236 292 252 255 298 242
17 and 19
80 135 49 66 62 79
142 170 169 140 145 153
196 200 200 200 180 197
293 310 244 257 280 272
21, 23, and 25
A plug with a given rotation letter will mate with a receptacle with the same rotation letter. The angles for a given connector are the same whether it contains pins or sockets. Inserts are not rotated in conjunction with the master key/keyway.
