STEM Career Outlook

Wages, employment opportunities, and growth projections for STEM jobs.

CNC Machining Design Guide

Optimize your designs, reduce machining time, and lower your costs.

Selecting the Right 3D Printer

Discover how to choose the right 3D printer for your needs and the key performance attributes to consider.

Negotiate Your Salary

Learn the best principles to negotiate the salary you deserve!

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Size Basic Major Diameter Basic Pitch Diameter Minor Diameter Minor Dia. Area Tensile Stress Area
Size Primary Size Secondary External Thread Internal Thread
inch inch inch inch inch inch sq. inch sq. inch
#6 (0.138)*   0.1380 0.1177 0.1008 0.1042 0.00745 0.00909
#8 (0.164)*   0.1640 0.1437 0.1268 0.1302 0.01196 0.0140
#10 (0.190)   0.1900 0.1697 0.1528 0.1562 0.01750 0.0200
  #12 (0.216)* 0.2160 0.1957 0.1788 0.1822 0.0242 0.0270
1/4*   0.2500 0.2297 0.2128 0.2162 0.0344 0.0379
5/16*   0.3125 0.2922 0.2753 0.2787 0.0581 0.0625
3/8*   0.3750 0.3547 0.3378 0.3412 0.0878 0.0932
7/16   0.4375 0.4172 0.4003 0.4037 0.1237 0.1301
1/2   0.5000 0.4797 0.4628 0.4662 0.166 0.173
9/16   0.5625 0.5422 0.5253 0.5287 0.214 0.222
5/8   0.6250 0.6047 0.5878 0.5912 0.268 0.278
  11/16 0.6875 0.6672 0.6503 0.6537 0.329 0.339
3/4   0.7500 0.7297 0.7128 0.7162 0.395 0.407
  13/16 0.8125 0.7922 0.7753 0.7787 0.468 0.480
7/8   0.8750 0.8547 0.8378 0.8412 0.547 0.560
  15/16 0.9375 0.9172 0.9003 0.9037 0.632 0.646
1   1.0000 0.9797 0.9628 0.9662 0.723 0.738
inch inch inch inch inch inch sq. inch sq. inch
Size Primary Size Secondary Basic Major Diameter Basic Pitch Diameter External Thread Internal Thread Minor Dia. Area Tensile Stress Area
Size Minor Diameter
* Standard Sizes of the UNC, UNF or UNEF series
STEM Career Outlook

Wages, employment opportunities, and growth projections for STEM jobs.

CNC Machining Design Guide

Optimize your designs, reduce machining time, and lower your costs.

Selecting the Right 3D Printer

Discover how to choose the right 3D printer for your needs and the key performance attributes to consider.

Negotiate Your Salary

Learn the best principles to negotiate the salary you deserve!