uxcell Spiral Point Plug Threading Tap M2 x 0.4 Thread, Ground Threads H2 3 Flutes, High Speed Steel HSS 6542, Titanium Coated, Round Shank with Square End, 2pcs
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Because I don't know the specifics, I'd advise being extremely cautious. To significantly reduce the risk, I usually drill the hole a size or two larger. It appears that a 2 is required. The 39 bit is slightly larger than a 5mm drill, but it's the closest I've come. The size of the hole will vary depending on the material and thickness; the deeper I need to tap and/or the more difficult the metal, the larger the hole will be. The reason for this is that a larger hole relieves the tap of a lot of stress, and the risk here is that the tap will break. Of course, you must be careful not to go too big, especially if the material is thin, because a larger hole means the screw will strip more easily. I've never had a problem with larger holes, but here are a couple of examples: If I were to do something, I'd say I'd probably go with the 39 bit for 060" sheet metal. Because thicker metal engages more threads, it's less likely to strip the screw, so if the screw is thicker, it's less likely to strip. 060" I'd go with 38 and maybe. I'd go with 39" for 180". It all depends on the metal, and while stainless is usually risky, there are some that are relatively easy to tap, but others that are simply the worst. I'm painting a scary picture because it can be frightening, and frightening is a broken tap in something you can't have a broken tap in: o br>Another issue is that stainless cuttings can build up in the flutes, making it appear as if everything is fine until you try to back out and the cuttings bind it up, preventing you from ever getting out. So my advice is to stop and back off once you've gotten it started, which means you've gotten it far enough in that it's making full depth cuts. 1/4 turn. This will break off the cuttings it has made thus far, and you will feel it cutting them at about a quarter turn back. After that, cut a 1/4 turn and back off to break the cuttings. The cuttings should fall out, and if they don't, they'll be less likely to jam up. If you don't do this, the cuttings will clog the flutes and the tap will almost certainly jam. The thickness of the metal is taken into account, so if. It's unlikely that you'll have an issue if the material is 050" thick, but if it's 1/4" thick, you should be very cautious. br>You'll want to back the tap all the way out and clean the cuttings out after two full turns, maybe less. If it backs out fine, you're good to go; if it binds up as you back out, you're at risk; if it binds up as you back out, you're at risk; if it binds up as you back out, you're at risk; don't cut as much between cleanings this time. So it's possible that you'll have to pull it all the way out to clean after each full turn, but you won't know until you try it. You can generally tap as far as you want in one shot with easier metals, such as cast iron. Stainless steel is (or can be) the polar opposite. Use lubricant! Lubricant should be used on all metals, but especially on those that are difficult to work with. Cast iron, for example, can be tapped without lubrication, but stainless steel is the polar opposite; I usually use motor oil, but any real oil should suffice. Even WD- It's better to have 40 than to have none at all. Silicone is not a metal lubricant and should not be used. br>I hope this helps you (or anyone else who is interested), but the tap is small, making it weak, and stainless steel is difficult to cut and prone to chip binding. You're basically screwed if the tap breaks; it'll be stuck in there for the rest of your life. Broken tap removers are available, but they won't work with this size stuck in stainless steel. br>Wishing you all the best!
Selected User Reviews For uxcell Spiral Point Plug Threading Tap M2 x 0.4 Thread, Ground Threads H2 3 Flutes, High Speed Steel HSS 6542, Titanium Coated, Round Shank with Square End, 2pcs
They arrived promptly and in good condition.
I've ordered a number of similar items from Uxcell and have always been pleased with the results, including this one. These taps are primarily used for re-entry. Taping and cleaning threaded holes that have been damaged or have been poorly machined. As a mechanical engineer, I would strongly suggest Uxcell products to others.
br>I'm very pleased. br>There are no issues.
There are no issues. When tapping, just be cautious and use a light oil.
After a few weeks, mine broke. Made in China, that's all there is to it.