These are the self locking copper exhaust nuts to hold on the heat exchangers securely without backing off. very nice built in washer for a secure mating surface. special copper nuts are sold each. 12mm head 8mm hole.
Support nut for our part # 115114 115115 and 115116 etc. Internal thread: 4.7cm total height of the ring: 2.2cm height of the upper part of the screw ring including the thread: 1.4cm sold individually like new
This item may need to be sourced from Germany and would take 2-4 weeks to arrive. Once ordered it cannot be canceled. Please call to check stock or request expedited shipping.