Small Diameter Stainless Steel Tubing Fabricator

Fractional Tubing Gauge Chart

(All dimensions in inches)


Standard fractional tubing is most commonly welded or drawn seamless. Welded tubing is frequently used in commercial and industrial applications, while seamless tubing is used in applications that require smooth ID finishes.

Fractional tubing is different from hypodermic tubing in how it’s measured. Fractional sizes are based on the OD and wall thickness, with an acceptable variation on the wall thickness determined by the standards the tubing mill complies with.

Most raw material orders are available to ship within one business day, but delivery may vary based on customer requirements.

O.D. SIZE WALL THEORETICAL I.D.
1/16 (.0625) .005
.007
.008
.010
.011
.013
.015
.016
.017
.018
.019
.021
.023
.024
.026
.053
.049
.047
.042
.040
.037
.033
.031
.030
.027
.024
.020
.016
.015
.010
3/32 (.093) .008
.011
.016
.020
.030
.032
.035
.077
.071
.061
.053
.033
.029
.023
1/8 (.125) .010
.014
.016
.020
.028
.031
.035
.042
.046
.053
.105
.098
.093
.085
.069
.064
.055
.041
.033
.020
5/32 (.156) .011
.013
.016
.020
.028
.035
.135
.130
.124
.116
.100
.086
3/16 (.187) 010
.014
.016
.020
.022
.025
.028
.035
.043
.049
.167
.159
.155
.147
.143
.137
.131
.117
.102
.089
1/4 (.250) .010
.016
.020
.028
.035
.049
.065
.230
.218
.210
.194
.180
.152
.120
5/16 (.312) .020
.028
.035
.049
.272
.256
.241
.215
3/8 (.375) .020
.028
.035
.049
.065
.335
.319
.305
.277
.245
1/2 (.500) .028
.035
.049
.065
.444
.430
.402
.370
5/8 (.625) .028
.035
.049
.058
.065
.569
.555
.527
.509
.495

View The Metric Tubing Charts or Hypodermic Tubing Charts