Blog
  2. Fasteners
  3. Nuts
  4. Hexagon Nuts
  5. ASME B18.2.2 Small Pattern Hex Machine Screw Nuts

ASME B18.2.2 Small Pattern Hex Machine Screw Nuts

ASME B18.2.2 Small Pattern Hex Machine Screw Nuts

ASME B18.2.2 Small Pattern Hex Machine Screw Nuts Dimensions (mm)

Nominal Size Basic Major Diameter of Thread Width Across Flats, F Width Across Corners Thickness Bearing Surface Runout to Thread Axis, FIM
Basic Min. Max. Hex, G1 Min. Max.
Min. Max.
#0 1.524 3.175 3.073 3.175 3.404 3.556 1.092 1.270 0.127
#1 1.854 3.175 3.073 3.175 3.404 3.556 1.092 1.270 0.127
#2 2.184 3.969 3.810 3.962 4.343 4.572 1.448 1.676 0.152
#3 2.515 3.969 3.810 3.962 4.343 4.572 1.448 1.676 0.152
#4 2.845 4.763 4.572 4.775 5.207 5.512 2.210 2.489 0.229
#5 3.175 6.350 6.121 6.350 6.985 7.341 2.591 2.896 0.279
#6 3.505 7.938 7.671 7.925 8.738 9.169 2.591 2.896 0.279
#8 4.166 8.731 8.433 8.738 9.601 10.084 2.972 3.302 0.305
#10 4.826 9.525 9.195 9.525 10.490 10.998 2.972 3.302 0.330

ASME B18.2.2 Small Pattern Hex Machine Screw Nuts Dimensions (Inch)

Nominal Size Basic Major Diameter of Thread Width Across Flats, F Width Across Corners Thickness Bearing Surface Runout to Thread Axis, FIM
Basic Min. Max. Hex, G1 Min. Max.
Min. Max.
#0 0.060 1⁄8 0.121 0.125 0.134 0.140 0.043 0.050 0.005
#1 0.073 1⁄8 0.121 0.125 0.134 0.140 0.043 0.050 0.005
#2 0.086 5⁄32 0.150 0.156 0.171 0.180 0.057 0.066 0.006
#3 0.099 5⁄32 0.150 0.156 0.171 0.180 0.057 0.066 0.006
#4 0.112 3⁄16 0.180 0.188 0.205 0.217 0.087 0.098 0.009
#5 0.125 1⁄4 0.241 0.25 0.275 0.289 0.102 0.114 0.011
#6 0.138 5⁄16 0.302 0.312 0.344 0.361 0.102 0.114 0.011
#8 0.164 11⁄32 0.332 0.344 0.378 0.397 0.117 0.13 0.012
#10 0.19 3⁄8 0.362 0.375 0.413 0.433 0.117 0.13 0.013