Mechanical properties of nuts with ISO metric threads (coarse) | Bossard Sweden

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Mechanical properties of nuts with ISO metric threads (coarse)

according to ISO 898, part 2

Mechanical properties of nuts with ISO metric threads (coarse)

1) Nuts style 1 (ISO 4032) ≈ 0,9 d nuts
2) Nuts style 2 (ISO 4033) ≈ 1,0 d nuts
3) Class 8 ≤ M16 only type 1 (not heat-treated)
    > M16 type 1 (hardened and tempered) and type 2 (not heat-treated)

The mechanical properties as listed apply to heat-treated nuts:

Mechanical properties of nuts with ISO metric threads (coarse) notes

Notes
  • The minimum hardness values are binding only for nuts for which a test stress measurement can not be performed and for heat treated nuts. The minimum values are guidelines for all other nuts.
  • The minimum hardness values for nuts with nominal thread diameters above 39 and to 100 mm are for information only and are considered reference values.