DSG-423 METRICS
09 -4
OTHER TYPES OF PARTS
Metric identification schemes vary by type of part, most often a variation of that used of bolts and nuts. Note that
many types of English and Metric fasteners carry no special identification if they are otherwise unique.
Stamped U-Nuts
Tapping, thread forming and certain
other case hardened screws
Studs, Large studs may carry the property class number.
Smaller studs use a geometric code on the end.
CLASS 10.9 CLASS 9.8 CLASS 8.8