So, for quite some time I was wondering about what the correct screwdriver to open the old DSL router/modem was, and I think I’ve come to a logical conclusion: JIS screwdriver. “It’s like a Philips screw head, but it is flatter, like you chop a little bit of the tip of the screwdriver off.” Yep, indeed that is what people are describing about the JIS screwdrivers and heads. Matter of fact, some people even recommend flattening the tip of a Philips screwdriver to get a JIS screwdriver, although that still won’t quite be a full JIS screwdriver.
20180923/https://en.wikipedia.org/wiki/Screwdriver
20180923/DuckDuckGo jis screwdriver
20180923/https://revlimiter.net/blog/2014/09/the-japanese-phillips-jis-screwdrivers/
20180923/https://www.youtube.com/watch?v=gEwVUZr5xxQ
Runner-up: Poszidriv screwdrivers and heads. Upon closer examination, this can’t be it because it doesn’t have 45 degree angle smaller ribs. Yes, the tip is flatter as is needed, but a driver with 45 degree angle ribs on it won’t fit the screws if they don’t have likewise indentations.
20180923/DuckDuckGo philips 3/32 almost but doesn’t quite fit screw head
20180923/https://www.practicalmachinist.com/vb/general-archive/more-phillips-jis-screwdrivers-74364/
20180923/https://en.wikipedia.org/wiki/List_of_screw_drives#Pozidriv
20180923/https://upload.wikimedia.org/wikipedia/commons/2/21/Schnellbauschrauben_Pozidriv_IMGP0880.jpg
20180923/DuckDuckGo Pozidriv screwdriver
20180923/https://www.amazon.com/pozidriv-screwdriver-Tools-Home-Improvement/s?page=1&rh=n%3A228013%2Ck%3Apozidriv%20screwdriver
20180923/https://www.amazon.com/NoCry-Ratcheting-Screwdriver-including-Flathead/dp/B075D3CYC1/ref=sr_1_2?s=hi&ie=UTF8&qid=1537684696&sr=1-2&keywords=pozidriv+screwdriver