This part of ISO 4759 specifies a selection of tolerances for bolts, screws, studs and nuts with ISO metric threads and with product grades A, B and C and for tapping screws with product grade A....
Preformed holes can be drilled, cored, punched, pierced or extruded. lf edge burrs can cause assemblydifficulty, they should be removed. Wall ovality and/or taper can affect load carrying ability....
Xiaojun Catalogue 2025
