Metric - A4 Stainless Steel
                                    To DIN975
A4 grade 18//8 stainless steel (Type 316 S16)
Higher level of corrosion resistance than A2 S/S
Suitable for use in most food, medical, chemical, construction and electronic applications
M3 has a thread pitch of 0.5mm
M12 has a thread pitch of 1.75mm
M16 has a thread pitch of 2mm
Standards
                                    DIN 975