Internet Security Reference

Best Interchangeable Core Construction Code Information

*** Information listed is tip to bow.

As with anything, this information may change at any time, but it is worth a try.

Core Color Keyway Control Key Cuts Operating Key Cuts
Blue A 5309451 3781073
Green E 5309451 3781073
Orange F 25270 or 25272 47436
Red A 389872 147656
Black G 7924
5309451		 3560
3781073
Yellow D 92859 29380
Above Information provided by Dallas Locksmith Association Newsletter
Key Letter Control Key Key Letter Working Key
CBJ 5309451 CJ 3781073
CBG 5309451 BG 3781073
CBF 5309451 BF 3781073
CBJ 5309541> BA 3781073
C-1 (Restricted Section?) 4891825    
Above Information provided by Norm Z.
Key Letter Key Cuts - Tip to Bow Function Keyway
'C' 6678567 Control Key KSP Restricted Fits into standard C but not vice- versa
'MD' 2234132 Operator Key Cores are also marked 'MD'
Information Provided by Jack, B.
 
Core Color Key Cuts - Tip to Bow Function Keyway
Orange 1658926 Control Key Best High Security Construction Core
Orange 5214322 Working Key ""  ""   ""
Information Provided by Thomas D. 2/12/03
Core Color Key Cuts - Tip to Bow Function Keyway
Lime Green 3800900 Control Key Best Construction Core, zeros have no pins
Lime Green 7414322 ( ? ) "A" Keyway Master/User Key Best Construction Core, zeros have no pins

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