HG: Qualified
JY: Mechanical Occlusion
PT: General Purpose
FA: General Precision
FB: Higher Precision
FC: Advanced Precision
O: Oiled,
CF-Chromium Free Passivation
R: Organic Coating,
C: Chromate Passivation
CFO: Chromium Free Passivation and Oiled
CO: Chromate Passivation and Oiled
S: Light Zinc
Z: Zero Zinc