Screw and nut identification

Convention QUALITY keys for screws and nuts

Nuts related to each screw QUALITY

Also conveniant for screw DIN

Washers related to each screw QUALITY

8.8 screw is related 200HV washers both for DIN 125 (ISO 7089) and for DIN 9021 (ISO 7093)

10.9 screw is related to 300HV washers both for DIN 125 (ISO 7089) and for DIN 9021 (ISO 7093)

Metric thread screw steps

Approximate values for “resistance traction hardness” conversion

Tightening keys for DIN screws and for ISO screws

DIN standard to ISO equivalences

Screws, nuts, washers, weights by size

As information, for steel screws, the weight is estimated based on the volume with 7,85 kgs/dm3 density.


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