bja743 wrote:OK, 1st off im srry but i am a newbie at this i have only picked around 10-12 locks but anyway i was wondering are shear line control keys (for i core locks) diffrent for each key...? i know it is a stupid question but i was just wondering
Hello Baja.......What may really be helpful is if you can disassemble an IC to see it's inner workings. It is basicly a plug (which is one shear line for operator key and master key). Then the plug slides into a sleeve (which is the shear line for the control key). And the plug and sleeve slide into the shell. Now remember all the control key does is slightly turn the control sleeve to remove the core from the housing/knob/or lever.
The space between the plug and the control sheer line are always the same.....The only changes are in the combination of the pin sizes and depth of the key cut.
Also there are 3 different "pinning" systems for the S.F.I.C. A-2 (9 macs, 2 step progression), A-3 (6 macs) and A-4(6 macs, single step)