8/1/1993 · Shear strength of bolts. The shear resistance of the bolt per shear plane Fv,Rd is provided in EN1993-1-8 Table 3.4 : Fv,Rd = αv ⋅ fub ⋅ A / γM2. where: αv is a coefficient that takes values αv = 0.6 for bolt classes 4.6, 5.6, 8.8 or αv = 0.5 for bolt classes 4.8, 5.8, 6.8 and 10.9.