Micro Hole Drilling Experts



Jan 11, 2017

It’s a new year and once again we have added new equipment.

 Once again, we have added new equipment to our ever growing shop.  This time it is a new cnc lathe.  We make a lot of round parts that then require small holes and we have added a newer, faster, and more accurate lathe.  It is now up and running and in addition to better precision,  we expect to be able to offer shorter lead times with this lathe in our arsenal.

 With the continuous growth comes a new need for more employees.  We have added a new employee in December (welcome Levi) and we are looking to hire another in the weeks ahead.

Stayed tuned; we may have more equipment and capabilities coming soon!

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Drilling .001” Diameter Holes

Aug 19, 2016

We offer a number of different machining services here at National Jet Company, including mechanically drilling some very small holes.  We routinely drill holes as small as .001’’ diameter (about 25 microns).  We can drill in many different materials, including stainless steel.

 When drilling holes like this, we can typically drill thru a depth that is 7 times the diameter of the hole.  (We can drill a .0010’’ diameter hole thru .0070 of material’’, we can drill a .0015’’ diameter hole thru .0105’’ material.) One of the keys to this of course is the drill; we make this diameter drill here at National Jet Company.  (Tolerance on the drill is +.0000’’, -.0001’’).  We make this drill from either carbide or high speed steel.

 We drill these holes on our micro drilling machines.  Typically, we can keep the tolerance on the diameter of the hole to ±.0001’’ (about 2.5 microns).  Of course, we can inspect and measure the hole (and even provide photos) of the .001’’ diameter hole that we drill.

 Since we make the drills, we can also make  nearly any size (to within .0001’’).  So if your part requires a hole that is .0016’’ diameter, we can make that size drill for your application.  (Our “hole in the hair” that we drill is actually drilled with a .0012’’ diameter drill)

 We look forward to any drilling challenges that you have!



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Micro Drills

Sep 24, 2015

Drilling small holes is our specialty-we’ve been doing it since 1937.  One of the keys to drilling small holes is the drill-it needs to hold up when drilling holes as small as .001’’.  It is pretty remarkable that we can drill a hole that small thru stainless steel.


We added a new cnc drilling making machine a couple of years ago for making drills.  It has allowed us to produce micro drills faster and more consistently than we could before.  We have used it to produce drills with different geometries to meet the wide variety of needs of our customers.  It has helped us bring our lead times down on many drilling jobs as we can often produce the tooling needed for the job instead of ordering and waiting on outside vendors.  We’re still learning how to “make that machine sing”  (the learning process never really ends), but our drill making plays an integral part of our micro hole drilling process.


We still make micro tooling for sale, including spade drills (carbide or high speed steel), reamers, punches and broaches.  We haven’t entered the market yet for other types of micro tooling, but stay tuned!

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Diverse Businesses

Mar 30, 2015

The founder of National Jet Company, John Cupler, originally worked for the local Celanese plant and came up with a better way to drill holes in their spinnerettes.  Many people and companies still know National Jet  Company as a U.S company that specializes in making spinnerettes for the man made fiber industry.

 And it is still a big market for us.  We make spinnerettes for carpet fiber manufacturers, spinnerettes for artificial grass, outdoor furniture, and fishing line.  We make spinnerettes for spunbond fiber, meltblown, filtration, slit film and specialty markets.

 But in the last 2 decades, we have become a world leader in the manufacturing of parts for other industries. We now have dedicated equipment for making nozzles for 3D printers, nozzles for ink jet printers and nozzles for industrial glue dispensers.  We make parts for the solar panel industry, the medical industry, aerospace and telecommunications industries as well as parts for defense contractors.

 We still focus on precision machining and micro hole manufacturing.  We now do it for a lot of different industries and products for companies around the world.


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Welcome Sam Jr!

Jun 30, 2014

National Jet Company is the embodiment of the family owned business.  The company was purchased in 1992 by Sam and Pam Griffith.  Sam comes to work at the office every day.  He handles most of the scheduling, equipment purchasing,  personell , and accounting issues.  He works the booth at nearly every trade show that we do and frequently travels with the sales team to meet customers.

Under Sam’s leadership , National Jet Company is not just a family business, it is a family friendly business.  We celebrate employees’ personal milestones.  We have cake on employees’ anniversaries and big birthdays, we celebrate the births of babies and we mourn with our co-workers on sad days.  There is a quarterly pancake breakfast where bonus checks are passed out in good times. There is always a company Christmas party and frequently a company sponsored trip to amusement parks with entire families.

It is a typical family run business.  And it’s a great place to work.

While Sam is in no hurry to retire, it is time to start preparing for the next generation to run this business.  So National Jet Company is pleased to welcome Sam’s son, Sam Jr to National Jet Company.

Sam is a 2011 graduate of the University of Maryland with a degree in mechanical engineering.  He has spent the last few years working for a firm in the Washington D.C. area and we are pleased to have him on board at National Jet Company.  He will begin as a Special Projects Engineer, and over time, he hopes to work with each of the departments in the shop as well is in our front office.  It is a lot to learn, but we have little doubt that he will learn the business very quickly.

For our staff and our customers, we believe that there is only upside to this transition.  We will gain from Sam Jr’s state of the art skillset, while we continue to benefit  from Sam Sr’s experience.  Sam Sr. will still be here nearly every day and will work with his son to continue improving our processes and our capabilities.  As we prepare the next generation of leaders in micro hole manufacturing, the future looks very bright for National Jet Company.

So welcome aboard Sam, we are very glad to have you.

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Still More Equipment and Capabilites

May 8, 2014

2014 remains very busy year for National Jet Company and we have continued to add equipment and capabilities at our fastest pace ever.  We have just purchased and have begun to run another swiss lathe. We have continued to receive orders from new customers that require precise turned parts.  Many of these parts require a small hole and the flow required through this hole is very critical.  Of course, small holes have always been our specialty, but we are being recognized for our expertise in swiss turning by both new and established customers.

We also have even more inspection capability for these parts as we have added a new image dimension inspection machine as well.  (We are clearly doing our part to help the economy.)Depending on the size of the part, we can provide detailed data on the parts that we make, including the micro hole.


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More Equipment; More People

Mar 5, 2014

The past 6 months has seen National Jet Company add more new equipment in that time frame than ever before.  We have just added a new tool grinding machine which should really help with our transition drills and specialty drills; it will hopefully help cut down on lead time for tooling and help us continue to improve lead time for all parts.

Additionally, we have added a new employee in the micro drilling section.  It’s a long lead time to develop this skill, but our shop keeps growing and we are moving to keep up with our customers’ demands.

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More Equipment

Dec 2, 2013

This looks to be a record setting year for us in terms of adding new equipment!

We have offered swiss style turning for several years here at National Jet Company.  We make a lot of different types of nozzles for several different industries. (Some of these industries include hot melt nozzles, printer nozzles, nozzles for 3D printers, and nozzles for aerospace just to name a few.) We have just added a new and smaller cnc precision lathe which will help us with jobs that don’t have quite the same volume as those that we would run on the swiss lathes.  This lathe offers live tooling and will allow us to continue to provide the accuracy and precision that our customers have come to expect from National Jet Company.

This new machine is up and running and is already helping to reduce our lead time on turned parts.

Keep an eye on us as we have more equipment coming in within the next few weeks.

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New Equipment for Small Hole Repairs

Nov 4, 2013

One of the many ways that we stay on top is investing in new technology and new equipment.  We add machinery nearly every year and this year is no exception.  We just added a new technology which will help us with spinnerette repairs.  This technology should help us reduce lead time required for refurbishing spinnerettes; this will help with both round holes and shaped holes.  (This technology will help with any part that has a lot of holes that need to be cleaned up.)  Please don’t hesitate to give us a call to talk about this in more detail.

Keep checking this blog as we expect to add more equipment in the weeks ahead.

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Welcome to the National Jet Blog!

May 23, 2013

Welcome to the National Jet Company blog! We hope to use this forum to keep you up to date on changes here at National Jet Company, including new processes and technology, awards and certifications, and other events. If there is anything that you would like to have us add to this blog, please send us an e-mail and let us know.

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