A clear surface treatment callout names the standard, type, class, thickness, masked areas, and acceptance basis so anodized, passivated, and plated CNC parts can be quoted and inspected without guesswork.
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Tag: surface treatment
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Square End mill: 8mm Cut Dia, 20mm LOC, 8mm Shank Dia, 60mm OAL, 2 Flute, Solid Carbide, TiSiN Coated
1 × RM4.12 -
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M39x3 HSS 6542
2 × RM10.85
Square End mill: 8mm Cut Dia, 20mm LOC, 8mm Shank Dia, 60mm OAL, 2 Flute, Solid Carbide, TiSiN Coated 
M39x3 HSS 6542 Subtotal: RM25.82