Socket head screw - metal
Group 340
# Made from stainless steel or mild steel (M4-M5)
# Finish: metal or zinc
# According to DIN912, NF E25-125, ISO 4762
Flat head machine screw - metal
Group 341
# Made from stainless steel or mild steel (M3-M5)
# Finish: metal or zinc
# According to DIN965, ISO 7046
