Try steel wool to get the coating off the tip of the screw if worried about it. You could even use the soap pads, just rinse afterward to remove the soap. An emory board a.k.a. fingernail file and be used, may have to wet it a few times to get it to bend. Break off old wet part and start again. Emory cloth would be less of a pain, but not likely laying around everyone's junk drawers and tool sheds.
Mark's super simple carto punch
- Thread starter Bovinia
- Start date
- th_trl_thread_readers 0
- Status
1/4x20 is a really standard thread size, probably the most standard 1/4" screw thread size.
This is just my opinion but - with the hub being the more expensive part, I would say try to protect the hub and its threads. A stainless steel screw is probably going to be quite a bit harder/stronger than the hub and so the threads on the hub are going to be most likely to "take the hit" over time with a thread mismatch.
A stainless steel screw would be a good choice so you don't have to try to get a finish off of it (if you're concerned about that) - and also because of its hardness - but I'd recommend looking for a stainless steel 1/4x20 screw, it shouldn't be too hard to find one that has the right profile on the tip for what we need it for.
McMaster Carr probably has something useful in stainless. I'll take a peek.
T
This is just my opinion but - with the hub being the more expensive part, I would say try to protect the hub and its threads. A stainless steel screw is probably going to be quite a bit harder/stronger than the hub and so the threads on the hub are going to be most likely to "take the hit" over time with a thread mismatch.
A stainless steel screw would be a good choice so you don't have to try to get a finish off of it (if you're concerned about that) - and also because of its hardness - but I'd recommend looking for a stainless steel 1/4x20 screw, it shouldn't be too hard to find one that has the right profile on the tip for what we need it for.
McMaster Carr probably has something useful in stainless. I'll take a peek.
T
hmm well they do have 1/4-20 all day long but not seeing anything with that tip on it. Trying to think of what they usually call those kind of screws.
That would be neat 
The 1/4-20 410 stainless tap screws at kmac were the only ones I found uncoated at a fairly low price, but I agree someone else likely has them. I saw them at a couple specialty places, too, like a florida site that does hurricane panel fasteners, but they were in bulk, over $100 min buy.
Drill point 1/4-20 are common, just don't work without grinding.
The 1/4-20 410 stainless tap screws at kmac were the only ones I found uncoated at a fairly low price, but I agree someone else likely has them. I saw them at a couple specialty places, too, like a florida site that does hurricane panel fasteners, but they were in bulk, over $100 min buy.
Drill point 1/4-20 are common, just don't work without grinding.
ah yeah, there we go. I looked back at his OP again. "Fender bolts" came to mind but yeah, metal piercing, makes sense. Interesting they are spec'd for mounting mirrors on cars.
markfm you probably found the best ones really, especially since you can buy those in relatively small quantities.
I had a couple of days at work where I was doing some trivial things, so spent hours researching screws. I looked for cone point, gimlet, type a,...
The alternative would have been custom fab of the hub, like you are thinking about, but I wanted something cheap, easy, effective, that anyone could get the items for.
Thankfully the lovejoy hub was not bad. I tried a standard collar from grainger, too thin, but think the lovejoy came up in under 1/2 hour of poking about. Free shipping meant it was destined to be the part (i don't know if they have changed that yet, since free is odd)
The alternative would have been custom fab of the hub, like you are thinking about, but I wanted something cheap, easy, effective, that anyone could get the items for.
Thankfully the lovejoy hub was not bad. I tried a standard collar from grainger, too thin, but think the lovejoy came up in under 1/2 hour of poking about. Free shipping meant it was destined to be the part
(i don't know if they have changed that yet, since free is odd)
Mine was free shipping when I ordered it last week. It was funny when it came, that little hub was packed in a box big enough for an alternator LOL
- Status
Similar threads
