1236 Bolt data

Hole sizes for ordinary bolts and friction grip connections

Nominal Clearance Oversize Short slotted Long slotteddiameter hole hole holesa holesa(mm) diameterb diametera (mm) (mm)

(mm) (mm)Narrow Slot Narrow Maximum

dimension dimension dimension dimension

M12a 14 17 14 18 14 30M16 18 21 18 22 18 40M20 22 25 22 26 22 50M22 24 27 24 28 24 55M24 26 30 26 32 26 60M27 30 35 30 37 30 67M30 33 38 33 40 33 75

a Hardened washers to be usedb In cases where there are more than three plies in joint the holes in the inner plies should be one millimetrelarger than those in the outer plies

Bolt strengths

Bolt grade Steel grade

4.6 8.8 S275 S355 S460

Shear strength, ps (N/mm2) 160 375Bearing strength, pbb (N/mm2) 460 1000a 460 550 670Tension strength, pt (N/mm2) 240 560a The bearing value of the connected part is critical

Bolt data

1242 Bolt data

Bolt data 1243

1246 Bolt data

Bolt data 1247

Bolt data 1251

1252 Bolt data

Bolt data 1255

1256 Bolt data

1270 Weld data