What is a Yale GST key blank? | Ask the Key Wizard


What is a Yale GST key blank?


Yale GST blanks are a multi-sectional keyway. Typically a Yale cylinder is assigned a single letter or two letters. I.E. G, GA, GB, GC, etc. The G key blank is a master milling that will fit in not only the G cylinder but also all cylinders in that sequence. The Yale GST blank fits all G, S and T keyways.


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