used in temperatures above 300☌ or below -50☌ (DIN 267 Part 13).have corrosion resistance (DIN 267 Part 11).are assigned to property classes in accordance with ISO 898-2.across flats or external diameters of ≥ 1.45D.thread tolerances 6G and 4H to 7H compliant to DIN 13 Part 15,.ISO Metric threads compliant to DIN 13 Part 13,.Nuts specified to this standard must withstand specified proof loads and: Property classes for nuts without defined proof load values (hardness classes) have been taken from DIN 267 Part 4 and have been specified in DIN 267 Part 24. The proof loads values specified here are lower in comparison to ISO 898-2.ĭIN 267 Part 4 classes which comply with ISO 898-2 are marked with two vertical bars, for example | 8 | instead of 8. ![]() The previous symbols, 4D, 5D, 5S, 6G, 6S and 8G were replaced by code numbers 4, 5, 6, 8, 10, 12 and 14 where the numbers indicated 1/100th of the minimum tensile strength. It was converted to the international property classes in 1967. This standard is current and unlikely to be withdrawn. DIN 267 Part 4:1987 Technical Delivery Conditions Property Classes for Nuts (Previous Classes)
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