Brass Padlocks UNION offer a range of traditional general use brass padlocks for a variety of applications. 3122 / 312251 / 312252 - Cylinder Padlock 3142 / 3152 - Close Shackle Padlock 3102 / 310251 / 310252 - Cylinder Padlock 31022 / 310221 - Cylinder Padlock 3104 / 310441 / 310442 - Cylinder Padlock