Tap Nomenclature and Related Terms
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Ever wonder what the difference is between an NPT (National Pipe Taper) and NPTF (National Pipe Taper Fuel) threads are? It’s not just the spelling.
They are both the same in many ways,
- both are used to carry fluids and gasses
- both have the same diameter, thread per inch combination, sizes, 1/16-27, 1/8-27, ¼-18, etc.
- both have an included thread angle of 60 degrees.
- both have a thread that tapers 3/4 per inch per foot or 1/16 per inch.
- both have flatted crest and roots
- both have the same pitch
The acquisition of North American Tool Corporation extends custom product capability into the threading space, a new offering for GWS that adds a powerful dimension to the already robust product and service portfolio.
Tavares, FL February 4th, 2020 – GWS Tool Group is pleased to announce it has acquired North American Tool Corporation (NATC). They represent the second add-on acquisition in 2020 for GWS.
Located in Northern Illinois, North American Tool is a world-class supplier of special taps, dies, and gages. From solid carbide thread mills to high-speed steel taps and thread gages, North American Tool delivers high-quality specialized threading
North American Tool Corporation, South Beloit, IL, has announced the appointment of Steve Mayse as Director of Manufacturing.
Mayse will be responsible for developing and implementing operational strategies to strengthen and grow the manufacturing performance at North American Tool Corporation, a leading provider of special taps, thread mills, dies and gages to industrial markets, and Allen Benjamin Inc., a manufacturer of carbide and premium HSSE taps.
Steve brings a wealth of relevant manufacturing experience to his new position, with more than 35 years of senior management expertise, implementing strategic development and growth execution plans at various leading-edge manufacturers.
“Steve
Have you ever had a tapping job that was so troublesome that it caused heartburn or acid indigestion due to broken taps, bad finish, short tap life, over or undersized threads, ETC.?
One way of avoiding or alleviating such a condition is accomplished with the use of a tap feature called “relief”. The definition of “relief” according to Marian Webster, is removal or lightening of something oppressive, painful, or distressing. For a tap, “relief” is the reducing of surface contact between the tap/tap feature and the part being tapped. Surface contact generates unwanted heat causing the
First things first, what is the root of a tap?
The root of a tap is the surface at the bottom of the thread-form that connects adjacent thread flanks and is expressed as width or as a diameter. The term root diameter is also called minor diameter, it’s one of those things, you say rain and I say precipitation, meaning the same thing.
The root of a tap, unless designed as a controlled root tap, normally does nothing, it is a
We realize how confusing the painstaking math is to get preplate part limits and a Tap “H” limit, but don’t worry, all you have to do is contact us with your thread information, and we will do the work. Call us at 800-USA-TAPS.
If you want to know how it's done, we’ve included the formulas for the engineer in all of us.
When encountering
If a tap doesn’t create the hole, why is the hole size so important?
As an experienced machinist will tell you, threading holes is the last thing you master in this craft. Why is that so?
1. Drilling and milling are usually easier.
2. Threading the hole is usually the last operation on a part.
Let's look at one variable: Hole size.
Generally, for 60 degree threads, the percentage of thread should be 75% as a rule-of-thumb. That seems to be a good guideline, as it falls within both 3B and 2B minor diameter
Emily Torres is a rising senior at South Beloit High School. She signed up to participate in a job shadow program with North American Tool and several other local businesses. The students (including Emily) were exposed to various aspects of the companies they worked with over a two week period.
The shadowing program was organized and sponsored by South Beloit High School’s College & Career Center. The program is funded by Hendricks CareerTek. “The goal moving forward is to allow participating youth to gain valuable experience in the trades” says Tina Salzman, Business & Education
Marcus Schellinger, a rising senior in a Rock County High School (WI) on track to graduate at the end of the 2019-20 school year has spent the last six weeks working at North American Tool in South Beloit, IL. Marcus had to take the initiative to apply online to the Rock County 5.0 program (in its second year) a part of the Rock County Economic Development Committee.
Marcus was assigned to work a CNC Mill and a CNC Lathe in the Bar Steel A department of NATC. This is where the making of a tool
