EN 20898-7:1995 Mechanical properties of fasteners - Part 7: Torsional test and minimum torques for bolts and screws with nominal diameters 1 mm to 10 mm (ISO 898-7:1992)
This part of ISO 898 specifies a torsional test forThe determination of the breaking torque of bolls and screws with nominal diameters 1 mm to 10 mm with property classes 8.8 to 12.9 in accordance with150 898-1.The test applies to bolts and screws with thread less than M3 for which no breaking and proof loads are indicated in ISO 898-1, as well as to short bolts and screws with nominal diameters 3 mm to10 mm which cannot be subjected to a tensile test.
EN 20898-7:1995 Referenced Document
ISO 898-1:1988 Mechanical properties of fasteners; part 1: bolts, screws and studs
EN 20898-7:1995 history
1995EN 20898-7:1995 Mechanical properties of fasteners - Part 7: Torsional test and minimum torques for bolts and screws with nominal diameters 1 mm to 10 mm (ISO 898-7:1992)