Hank was so kind to tell me the bin codes for the SST-20 5.000K and 6.500K. I took the liberty to write down how to understand those bin codes. However, I also stumbled upon different flux and tint bins in the same overall bin code. Maybe someone with more experience can explain what that's supposed to mean.
D4S with SST-20 3.000K
SST-20-W30H-A120-J2302(J4-VH-HD2)
► W30H: W = White, 30 = 3000K, H = 95CRI
► A120: Soldering Pad Type A, 120° viewing angle
► J2302: J2 = flux bin (min. 102 lm @ 350mA, 25°C), 302 = tint bin (HD2)
► VH = minimum Vf with 2.5V
D4S with SST-20 4.000K
SST-20-W40H-A120-J4402(J5-VH-FB4)
► W40H: W = White, 40 = 3000K, H = 95CRI
► A120: Soldering Pad Type A, 120° viewing angle
► J4402: J4 = flux bin (min. 118 lm @ 350mA, 25°C), 402 = tint bin (FB4)
► VH = minimum Vf with 2.5V
D4S with SST-20 5.000K
SST-20-WDS-A120-L2501(L3-VK-DA)
► WDS: W = White, D = Daylight White, S = 65CRI
► A120: Soldering Pad Type A, 120° viewing angle
► L2501: L2 = flux bin (min. 172 lm @ 350mA, 25°C), 501 = tint bin (DA)
► VK = minimum Vf with 2.9V
D4S with SST-20 6.500K
SST-20-WCS-A120-L3652(L3-VL-BA)
► WCS: W = White, C = Cool White, S = 65CRI
► A120: Soldering Pad Type A, 120° viewing angle
► L3652: L3 = flux bin (min. 180 lm @ 350mA, 25°C), 652 = tint bin (BA)
► VL = minimum Vf with 3.1V