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List of screw drives

en.wikipedia.org

61–70 of 263 posts

Re: List of screw drives

#61
post #34

Earlier quoted context omitted.

Phillips is incompatible with thread lock assuming you want to take them out. If threadlock is not used the removal torque is actually less than the insertion and it shouldn't be a problem in this case.

I wish auto manufacturers knew this.

They do. Cars are engineered to fail and some models are sold even at loss to get the profit from OEM parts and service. This is also often the reason why seemingly similar parts are incompatible from one model to the next; the manufacturers are racing against the (often much more durable) aftermarket parts. If they were in the business of making cars great for the consumers, they'd engineer them strong with grease fittings on every moving joint and have all parts standardized across models and brands, differentiated mostly by car size or such (supercompact vs crossover suv vs heavy-duty truck). This would however result in cars that would be easily maintained to last forever, like some old work equipment is and that'd be bad for the planned obsolescence market model of car manufacturers.

Re: List of screw drives

#62
post #59
post #7

Do you find yourself stripping Phillips head acres frequently? That is because you are confusing Phillips and Pozidriv heads. They look similar but have a different head and different amount of engagement. I just bought myself some Wiha drivers after years of using shitty tools. I am so much happier now.

IMHO, the Phillips head is pure evil and persists mostly because it’s one of the best ways to cause consumer-induced early obsolescence in any product that requires assembly by the end-consumer. It’s a huge unspoken conspiracy in the manufacturing world: “You supply Phillips screws. I supply Phillips screws. Everybody supplies Phillips screws. Everybody stays happy (except the consumers).” “You stripped the screw hea…

Here in France, I've seen not much Phillips (usually for small appliances or screws in plastic)..

I sent IKEA an email asking them to specify the difference between pozidriv and Phillips in their installation manuals (many people don't know), but they didn't reply :'(

Re: List of screw drives

#63
In the UK construction industry the pozidrive has long been the most used, followed by some special purpose designs using torx. Sometimes kitchens would come with the same crappy phillips screws as flatpack furniture.

However belt feed drywall screws were always phillips. In fact most drywall screws were. It always infuriated me if you wanted to put some extras in with a drill (or take some out) that you had to go searching for a PH2. I wondered if there was some special reason for it persisting with drywall screws, especially when screwing drywall is relative new to the UK, with most being nailed up until maybe 15 years ago? Auto feed drywall guns cam out like crazy...

Now I also wonder why we would always call the drywall "plasterboard" yet call the screws for it "drywall screws"!

Re: List of screw drives

#64

In Canada there is a saying: Anyone who doesn't use a Robertson head is just being an asshole.

Stupid question but I've been doing alot of construction lately and using Torx (25 I think?) for everything. What's the advantage of Robertson screws? (in particular for woodworking)

Robertson in Canada is just appeal to tradition at this point. They have no technical merit over Torx except maybe ease of ad-hoc construction of a driver.

Re: List of screw drives

#65

Not sure how common in the rest of the world it is, but in New Zealand it's quite common to have screws that are a combo-bit, and accept Phillips/pozi drive and also Robertson drive. The construction industry is a bit split between Pozi and Robertson, or at least it was a few years ago. Robertson drive is an amazing drive for construction work. The screws stick nicely onto magnetised drivers, so that you can screw th…

[deleted]

Re: List of screw drives

#66

Earlier quoted context omitted.

Totally. I'm a bit shocked how effective this is. For years the sight of a torx or rarer socket would stop me from even thinking about opening a device. I don't know if it was impossible to find before but today you can buy most heads easily. And when you think about it, it's just a damn contact surface for a lever.. don't stop (unless there's a real safety hazard)

Same here. The first couple of years I encountered torx sockets, I called them "those ones they put to prevent you from repairing things". The drivers weren't impossible to find, but they also weren't commonplace. It was doubly annoying when I had devices that had regular cruciform sockets (that I could even handle with a knife if in a hurry) on the outside, but then suddenly torx sockets inside.

oh yeah the partial disassembly is frustrating

after a year of toying with devices and watching people on youtube I'm a lot more unorthodox.. anything goes as long as it's not too stupid. Yesterday I used a knife and a wrench to open a braun toothbrush.

Re: List of screw drives

#67

Earlier quoted context omitted.

Same here. The first couple of years I encountered torx sockets, I called them "those ones they put to prevent you from repairing things". The drivers weren't impossible to find, but they also weren't commonplace. It was doubly annoying when I had devices that had regular cruciform sockets (that I could even handle with a knife if in a hurry) on the outside, but then suddenly torx sockets inside.

oh yeah the partial disassembly is frustrating after a year of toying with devices and watching people on youtube I'm a lot more unorthodox.. anything goes as long as it's not too stupid. Yesterday I used a knife and a wrench to open a braun toothbrush.

I never held back much when fixing my own stuff either. But it's a different game when I'm fixing things for someone else (e.g. a friend or family member) - then I really don't want to break or even scratch anything.

Re: List of screw drives

#68
The only real reason for Phillips screw heads were the old electromechanical industry robots that would rely on auto-centering and spring tension to pop the driver out of the screw against a switch at the set torque. Modern (since 1980s or so) industry robots are computer-driven and torque-sensing. Phillips (and Pozidriv) needs to die in favor of modern superior screw drive designs like Torx.

Re: List of screw drives

#69
post #50

As a teenager I stripped nearly all the screws holding the crankcase of my motorcycle together before realizing that JIS was different from Phillips. Didn't help that most of the old steel screws had seized against the aluminium crankcase. After a few unsuccessful attempts with an impact driver, I ended up just welding nuts to the heads, waiting for the heat to soak, then then wrenching them off. Then threw the lot o…

I had similar experiences. Buying a set of JIS screwdrivers was one of the best decisions I ever made. They even work on screws that have been mangled by improper tools. I haven't stripped a screw head since, though I've had to use an impact driver on a few really stubborn ones.

Re: List of screw drives

#70

Earlier quoted context omitted.

Even without thread locking compound, if the thing they're stuck in has corroded the screw/bolt or expanded. Phillips shouldn't strip going in, but it sure as hell strips coming out.

Yeah, this is compounded by the fact that our products go into marine environments - all our fasteners are 316 stainless but there are still sometimes galvanic issues.

Stainless fasteners are the worst. My company builds food equipment so they're a necessity, but... ugh. They gall terribly and they're squishy. If there happens to be a burr or crud in the threads, you might as well grab your angle grinder and drill, because that screw is not going to come out any other way.
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