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Table A8. Guide values for the tightening factor α_A

Table A8. Guide values for the tightening factor α_A (continued)

^a) countersurface: clamped joint member whose surface is in contact with the tightening element of the joint (bolt head or nut)

Note: Smaller tightening factors are possible in the specific case. They call for more effort in the setting process, a higher quality of the tool and/or the fasteners and components.