While nuts of property classes 70 and 80 to DIN EN ISO 3506-2 with small diameters produced in large batches are usually cold-formed and property class 50 is only supplied hot-formed for larger diameters, special nuts to DIN 267-13 are required to be machined from steel bars when produced in small batches.

b The test stresses given here are higher than those specified in DIN EN ISO 3506-2 in order to identify fully loadable nuts in the proof load test.As a result, the test stress is always higher than the highest minimum tensile strength of the bolt recommended for use in the combination a The test stress specified takes into account the fact that the hardness of the test mandrel used in the proof load test is greater than the hardness of the bolts with which the nuts are combined.Mechanical Requirments Suitable combinations of bolt and nut g See also VdTÜV-Werkstoffblatt WB 490.f Symbol VH denotes grade X22CrMoV12-1 as in DIN EN 10269 with a 0,2 % proof strength Rp 0,2 ≥ 700 N/mm2 (+ QT 2).e Symbol V denotes grade X22CrMoV12-1 as in DIN EN 10269 with a 0,2 % proof strength Rp 0,2 ≥ 600 N/mm2 (+QT 1).c Heat treatment condition as defined in DIN EN 10269:2006-07, :.b Maximum temperatures with specified creep strengths and creep rupture strengths.a Maximum temperatures with specified proof strengths and tensile strengths.Steels and nickel alloys as in DIN EN 10269 for high and low service temperatures Temperature ranges a Copper content ≤ 1 % (reduced content compared to that specified in DIN EN ISO 3506-1 and -2).When used at lower temperatures, the fasteners should be subjected to a suitability test for the intended application. NOTE No impairments of fastener reliability when used at higher service temperatures are known.Related Specifications of DIN 267 Bolting EN 10269 BS EN 1515 EN 10088-3 ISO 898-1 ISO 898-5 DIN 267 Chemical Composition Austenitic steels as in DIN EN ISO 3506-1 and DIN EN ISO 3506-2 for low service temperatures Minimum

Din 267 Part 11