EDM Silicon Nitride Guides

Ordering Custom EDM Guides

If a guide in the desired size cannot be found in the parts list below, do not hesitate to contact us. Custom guides can be built to your specifications. Please visit our guide customization page for more information. Guide specifications can be found here.

Product Code and Description

Please note that the following parts list is not representative of our entire guide selection. This list is meant to be used as much for reference as for actual purchasing, and represents a range, rather than a comprehensive list, of the products we offer. If the dimensions of a desired guide are not found on this list, but lie between listed dimensions, we are capable of manufacturing it.

  • Two 9 millimeter diameter, silicon nitride, customized guides with flanged collars and hypodermic extensions.
  • A Current CT/RT Series custom silicon nitride guide with a very long hypodermic extension.
  • A Current CT/RT Series custom silicon nitride guide with a short hypodermic extension.
  • A short Current CT/RT Series custom silicon nitride guide with an inserted brass electrode.
  • A pair of custom silicon nitride guides with hypodermic extensions and flanges.
  • A short custom silicon nitride barrel guide
  • A line of custom silicon nitride guides with hypodermic extensions with square and triangular guiding surfaces.
  • A custom silicon nitride guide with a tapered tip and hypodermic extension.
  • A wide and short custom silicon nitride guide with a tapered tip.


Inner Diameter

0.10mm / .004″

0.11mm / .004″

0.12mm / .005″

0.13mm / .005″


0.14mm / .006″

0.15mm / .006″

0.16mm / .006″

0.17mm / .007″


0.18mm / .007″

0.19mm / .007″

0.20mm / .008″

0.21mm / .008″


0.22mm / .009″

0.23mm / .009″

0.24mm / .009″

0.25mm / .010″


0.26mm / .010″

0.27mm / .011″

0.28mm / .011″

0.29mm / .011″


0.30mm / .012″

0.31mm / .012″

0.32mm / .013″

0.33mm / .013″


0.34mm / .013″

0.35mm / .014″

0.36mm / .014″

0.37mm / .015″


0.38mm / .015″

0.39mm / .015″

0.40mm / .016″

0.41mm / .016″


0.42mm / .017″

0.43mm / .017″

0.44mm / .017″

0.45mm / .018″


0.46mm / .018″

0.47mm / .019″

0.48mm / .019″

0.49mm / .019″


0.50mm / .020″

0.51mm / .020″

0.52mm / .020″

0.53mm / .021″


0.54mm / .021″

0.55mm / .022″

0.56mm / .022″

0.57mm / .022″


0.58mm / .023″

0.59mm / .023″

0.60mm / .024″

0.61mm / .024″


0.62mm / .024″

0.63mm / .025″

0.64mm / .025″

0.65mm / .026″


0.66mm / .026″

0.67mm / .026″

0.68mm / .027″

0.69mm / .027″


0.70mm / .028″

0.71mm / .028″

0.72mm / .028″

0.73mm / .029″


0.74mm / .029″

0.75mm / .030″

0.76mm / .030″

0.77mm / .030″


0.78mm / .031″

0.79mm / .031″

0.80mm / .031″

0.81mm / .032″


0.82mm / .032″

0.83mm / .033″

0.84mm / .033″

0.85mm / .033″


0.86mm / .034″

0.87mm / .034″

0.88mm / .035″

0.89mm / .035″


0.90mm / .035″

0.91mm / .036″

0.92mm / .036″

0.93mm / .037″


0.94mm / .037″

0.95mm / .037″

0.96mm / .038″

0.97mm / .038″


0.98mm / .039″

0.99mm / .039″

1.00mm / .039″

1.01mm / .040″


1.02mm / .040″

1.03mm / .041″

1.04mm / .041″

1.05mm / .041″


1.06mm / .042″

1.07mm / .042″

1.08mm / .043″

1.09mm / .043″


1.10mm / .043″

1.11mm / .044″

1.12mm / .044″

1.13mm / .044″


1.14mm / .045″

1.15mm / .045″

1.16mm / .046″

1.17mm / .046″


1.18mm / .046″

1.19mm / .047″

1.20mm / .047″

1.21mm / .048″


1.22mm / .048″

1.23mm / .048″

1.24mm / .049″

1.25mm / .049″


1.26mm / .050″

1.27mm / .050″

1.28mm / .050″

1.29mm / .051″


1.30mm / .051″

1.31mm / .052″

1.32mm / .052″

1.33mm / .052″


1.34mm / .053″

1.35mm / .053″

1.36mm / .054″

1.37mm / .054″


1.38mm / .054″

1.39mm / .055″

1.40mm / .055″

1.41mm / .056″


1.42mm / .056″

1.43mm / .056″

1.44mm / .057″

1.45mm / .057″


1.46mm / .057″

1.47mm / .058″

1.48mm / .058″

1.49mm / .059″


1.50mm / .059″

1.51mm / .059″

1.52mm / .060″

1.53mm / .060″


1.54mm / .061″

1.55mm / .061″

1.56mm / .061″

1.57mm / .062″


1.58mm / .062″

1.59mm / .063″

1.60mm / .063″

1.61mm / .063″


1.62mm / .064″

1.63mm / .064″

1.64mm / .065″

1.65mm / .065″


1.66mm / .065″

1.67mm / .066″

1.68mm / .066″

1.69mm / .067″


1.70mm / .067″

1.71mm / .067″

1.72mm / .068″

1.73mm / .068″


1.74mm / .069″

1.75mm / .069″

1.76mm / .069″

1.77mm / .070″


1.78mm / .070″

1.79mm / .070″

1.80mm / .071″

1.81mm / .071″


1.82mm / .072″

1.83mm / .072″

1.84mm / .072″

1.85mm / .073″


1.86mm / .073″

1.87mm / .074″

1.88mm / .074″

1.89mm / .074″


1.90mm / .075″

1.91mm / .075″

1.92mm / .076″

1.93mm / .076″


1.94mm / .076″

1.95mm / .077″

1.96mm / .077″

1.97mm / .078″


1.98mm / .078″

1.99mm / .078″

2.00mm / .079″

2.10mm / .083″


2.20mm / .087″

2.30mm / .091″

2.40mm / .094″

2.50mm / .098″


2.60mm / .102″

2.70mm / .106″

2.80mm / .110″

2.90mm / .114″


3.00mm / .118″

3.10mm / .122″

3.20mm / .126″

3.30mm / .130″


3.40mm / .134″

3.50mm / .138″

3.60mm / .142″

3.70mm / .146″


3.80mm / .150″

3.90mm / .154″

4.00mm / .157″

4.10mm / .161″


4.20mm / .165″

4.30mm / .169″

4.40mm / .173″

4.50mm / .177″


4.60mm / .181″

4.70mm / .185″

4.80mm / .189″

4.90mm / .193″


5.00mm / .197″

5.10mm / .201″

5.20mm / .205″

5.30mm / .209″


5.40mm / .213″

5.50mm / .217″

5.60mm / .220″

5.70mm / .224″


5.80mm / .228″

5.90mm / .232″

6.00mm / .236″