“Hand Tap” and “Machine Tap”, are terms that don’t always mean what you might think! These are stale industry “legacy” terms. Originally meant to define a purpose, they can be misleading to people in the industry. They should not define a tap’s modern method of use.
According to some handbooks, the term “Hand-Tap” has traditionally been applied to fractional size taps having a standard general-purpose length. Most manufacturers don’t limit the description to fractional sizes. Assumed to be straight-flute, these are taps whose flutes are provided as a space to accommodate chips created as
When you have a long way to go, and a short time to get there, there's a thread option available. Multi-start, also known as multiple-lead taps create a thread that offers quick assembly and disassembly. Most of us take these type of threads for granted, but see their use daily. From the caps on water and juice bottles, to the handles on our bathroom faucets, multiple-lead threads make life a little bit easier.
For the purpose of visualization, thread lead can be described as the linear
First Level Solution
Standard taps have features that satisfy most applications. They are “General-Purpose” taps for this reason. Dimensionally, they try to hit the sweet spot, and check most of the common boxes. Shanks and squares are accommodated by standard tool holders. The lengths of the tool, and length of thread, are sufficient for most set-ups and part requirements for depth of thread. Pitch-diameters are safely above the Go Gage to produce the specified Class-of-Fit for finished thread, and still distant enough from the “No-Go” to avoid any risk of producing oversized thread. Easy, in
A question was recently asked,” If Spiral-flute taps will work in both blind and through holes, why do I need a Spiral-point?” Sounds a bit like the lyrics to a sad Country song.
The answer to the question lies in the details of the application. Technically, all flute configurations will make threads in both “through” and “blind” holes. The decision on which is appropriate is based on producing desired chip flow. Chip evacuation is an issue that contributes heavily to the success, or failure of a tap. Also remember that flutes accommodate the volume of
Imagine you are trying on a new pair of pants. Your waist size dictates the class of fit. You are the bolt. Unfortunately, the likelihood that you find a pair that fits perfectly is rare. Too tight and too loose are immediately obvious. (I know it's a stretch from making threads in metal, but stay with me.) Now imagine that tight is the "Go" gage, and loose is the "No-Go" gage. Anywhere between the two, is acceptable. Maybe not completely comfortable, but acceptable. Thankfully, you have the ability to "fine-tune" the fit. You buy a belt. The notches
We proudly recognized Adam Gentry as the 2017 Associate of the Year during our Associate Recognition Steak Cookout on April 29, 2017.
Adam is a long-time associate of North American Tool. He's a stand-up guy who accepts responsibility and does not make excuses. He has a joy of learning and wanting to help where help is needed.
Outside of work Adam enjoys riding his Harley and enjoys woodworking. He considers himself "Facebook Famous" for his wood projects available to purchase at a local restaurant, Fatt Cat Cafe in Rockton, IL as well as local
The next time you unscrew the cap from your tube of toothpaste, take a look at the threads. They are quite likely Buttress threads. Have you used an adjustable wrench lately? Look at the thumb-screw. Buttress! All this time, right under your nose, was a thread-form that most people think, or know very little about.
Synonyms for "buttress" include; strengthen, reinforce, fortify, and support. The unique geometry of a buttress thread-form fulfills that requirement.
This thread-form is designed to stand up to a heavy axial load in one direction. This enables the thread to
A "blind" hole is one that is drilled, bored, or cast to a specific depth without breaking through to the other side of the workpiece. Unless you are Superman, daylight will not be visible when looking into a blind hole.
If you search the Web for solutions to problems experienced while tapping blind-holes, you will find more suggestions than you can shake a tap at. Perhaps it's simpler to start with the basics, and formulate options from there.
The first challenge when tapping blind holes is "chip evacuation". There is only one
Curt Lansbery, President & CEO of North American Tool Corporation, was awarded the 2017 Laurence A. Raymer Headliner Award for distinguished service and achievements in the community by the Beloit (WI) Daily News, at the Beloit Chamber of Commerce 90th Annual Dinner. In recognizing Lansbery, Editor Bill Barth said, “He’s a job creator. He’s helped families prosper. He’s made a difference in a commercial sense in the community… (and) what’s important is that Curt has always used his success to help other people.”
Curt has been instrumental in Beloit 2020’s efforts to rebuild the community. He has