Recommended PCB Hole Sizes

Use chart to determine PCB hole sizes for common Samtec lead sizes.

Lead Size Hole Size
(0.46) .018 Dia. (0.61) .024 Dia.
(0.51) .020 Dia. (0.66) .026 Dia.
(0.64) .025 Dia. (0.79) .031 Dia.
(0.76) .030 Dia. (0.91) .036 Dia.
(0.89) .035 Dia. (1.04) .041 Dia.
(1.14) .045 Dia. (1.30) .051 Dia.
(1.32) .052 Dia. (1.47) .058 Dia.
Lead Size Hole Size
(0.30) .012 Sq. (0.56) .022 Dia.
(0.41) .016 Sq. (0.71) .028 Dia.
(0.46) .018 Sq. (0.76) .030 Dia.
(0.51) .020 Sq. (0.81) .032 Dia.
(0.64) .025 Sq. (1.02) .040 Dia.
(1.14) .045 Sq. (1.75) .069 Dia.
Lead Size Hole Size
(0.13) .005 x (0.41) .016 (0.56) .022 Dia.
(0.20) .008 x (0.71) .028 (0.89) .035 Dia.
(0.25) .010 x (0.36) .014 (0.56) .022 Dia.
(0.25) .010 x (0.51) .020 (0.71) .028 Dia.
(0.41) .016 x (0.51) .020 (0.79) .031 Dia.
(0.41) .016 x (0.61) .024 (0.89) .035 Dia.
(0.41) .016 x (0.79) .031 (1.04) .041 Dia.
Bourbon lovers appreciate their favorite spirits in many forms. Neat. On the Rocks. A favorite mixed drink. An emerging trend in bourbon drinking comes from an unlikely place: Infinite Harvest – an indoor hydroponic vertical farm. Infinite Harvest produces repeatedly consistent, ...
With our last web update, we brought you a major update to our on-site search capabilities, an update to how we serve static webfiles on the website, and a few new content pages for industry standard products. In July, we continued to make improvements to our recently released on...
Design and Processing Engineers frequently contact our Interconnect Processing Group (IPG) to discuss multiple connector alignment issues on mating PCBs. Our standard response is “it’s easy, don’t worry about the alignment, and we recommend you use as many mated connector sets as...
All facets of life seem to include videos of some kind.  Social media feeds feature videos from family and friends or possibly that “killer product or service” everybody has to have.  “How-to” and “DIY” videos can be found on any random topic.  The list goes on. Never-ending vide...
24-hour free samples have always been one of the key differentiators for Samtec. We’re always striving to make that process as easy as possible. For the past few months, we’ve been quietly expanding and improving your ability to place sample requests online. We’ve now gotten this...
View Full Site