Or hammer a socket on, They dont look like they are special keys just fluted lugnuts to look like they are keyed.
IRWIN BOLT-GRIP Extractor Expansion Set, 5 Piece, 394002 https://www.amazon.com/dp/B000QW6K8I/ref=cm_sw_r_cp_api_i_E9AeBbE799MRF
Buy this. Also get the ‘male version’ where it’s the opposite as well. Never had these fail on me before. Just make sure you smack it on good with a hammer.
Go to your local hardware store and buy a screw extractor kit or a left hand drill bit, they're cheap and easy to use(i'll put an example at the end of the comment) punch the screw um the middle and with the extractor kit(instructions should be included) or with a left hand drill bit just drill ir out, it should come right of, i used the following kit to remove a broken crankshaft pullei bolt with success:
If you have any other questions, ask, im here to help.
Just get some Irwin bolt extractor socketa. They've never failed me as long as I'm able to get the socket on the head of the bolt
Irwin Tools BOLT-GRIP Extractor Expansion Set, 5 Piece, 394002 https://www.amazon.com/dp/B000QW6K8I/ref=cm_sw_r_other_apa_i_pqe.DbNXNNYGH
You need a damaged screw extractor, something like this.
I've used most of these methods to remove stripped screws and they all work pretty well.
You can also buy a small drill bit for removing stripped screws that does wonders. This guy right here: https://www.amazon.com/EssentialTools-Extractor-Stripped-Hardness-63-65hrc/dp/B07GZ17QD9
The dremel/flathead is a great trick. Should you happen to break the head off, something like this should help.
Damaged&Stripped Screw Extractor Remover Tool and Drill Bit Set. Broken Bolt Extractor and Screw Remover Set of 6 Pcs https://www.amazon.com/dp/B0883575ZJ/ref=cm_sw_r_cp_api_glt_fabc_M4WR9MTPG4R9SRFTMVNR?_encoding=UTF8&psc=1
This or one of them like it, or even a Stanley set at Home Depot. Just one thing to try before going full drill. Plus then you got a tool for later.
Something similar to this. most hardware stores carry them.
The dremel slot thing works, but I also got these and they worked perfectly for me: https://www.amazon.com/dp/B000Q60UOO/ref=cm_sw_r_cp_apa_glt_fabc_NSA0D5089AM4D5YKGFZB?_encoding=UTF8&psc=1
I've only used em twice so far but they've worked great
Here is the extractor set I think would work if all else fails. I think there is enough meat left on those screws that you would be fine with the right tool but if not. here is the link for the extractor set
You'll want to use a screw removal kit. You'll have to find the right size to use, but they're really effective at removing stripped screws. Obviously you will need to find a new screw for the machine afterwards. This method does destroy the screw more, but it's unusable already, so no harm there. Here's an example of what they look like so you have a decent starting place: https://www.amazon.com/Extractor-Stripped-HassleFree-Hardness-63-65hrc/dp/B07GZ17QD9
Something like that should do the trick
That “just cut a notch in it and use a screw driver!” Method has never ever worked for me. If a ratchet with much more leverage wasn’t able to get it out, a screw driver most certainly won’t either.
Try using these extractors.
You drill a hole in the bolt, pound these in and try and spin it using a wrench or vice grips for some leverage. Project farm did a video and it was one of the highest recommendations.
Amazon has some cheap extractor kit that makes life super easy.
There is a stripped screw bit that counter sink drills into the stripped screw as the bit turns.
Similar to this.
Lowes, depot, ace, dixieline, osh will all have something like this.
Edit. Super glue will adhere better to a rough surface
Edit 2. Rubber band works best when you are applying all the force you can while only very slowly turning the driver.
I haven't used one on a gun, but easy out screw extractors have saved me when repairing bikes.
They are self tapping reverse threaded screw that you drive into the stripped head.
Link is for an example, not because I know that is a good version. https://www.amazon.com/dp/B07GZ17QD9/ref=cm_sw_r_cp_apa_i_Ga4hFbGS7CB7K
Get a tool to drill it out ( be cafefull)
Something like this:
There are specific bits for removing stripped screws. Look for one of [these](https://www.amazon.com/Extractor-Stripped-HassleFree-Hardness-63-65hrc/dp/B07GZ17QD9) sometimes you can find single bits in just the size you need but the sets are nice to have
This is what you need: https://www.amazon.com/IRWIN-HANSON-Spiral-Extractors-53545/dp/B001D1FXDE/ref=pd\_lpo\_469\_t\_1/142-3847629-4116150?\_encoding=UTF8&pd\_rd\_i=B001D1FXDE&pd\_rd\_r=579ebe96-58aa-415f-ac06-52b1810e16c2&pd\_rd\_w=dvYr9&pd\_rd\_wg=hc9...
you can also get screw extractors..
Try jamming a Torx bit in there. If that doesn't work, look in to extractor bits.
You could just use one of those screw extractor bits to cut right through the paint since you're tossing them anyway.
This will remove it if you drill a hole in it.
These things are awesome. With a bit extender, you can probably get into a deep hole.
Damaged Screw Extractor Kit and Stripped Screw Extractor Set. Its A HassleFree Broken Bolt Extractor and Screw Remover Set https://www.amazon.com/dp/B07GZ17QD9/ref=cm_sw_r_cp_api_fabt1_ExcRFbB48T9VV
That remaining bolt tightens into that little extension piece. See if you can remove that one, pull out that extension piece, and you should be able to see the other end of those broken bolts. I'd pull mine off and take a picture for you, but the bolt for that extension piece is one of the bolts holding my aftermarket bumper on, and I really don't want to mess with that right now. Those two bolts you broke off are two I never reinstalled, so they're open holes that look like they're just nuts welded into the frame member.
Either take it to a local tire shop and give them a few bucks, or torch + easy out (or equivalent, like these: https://www.amazon.com/Irwin-Industrial-Tools-53535-Extractor/dp/B00004YOBF)
There are drill bits made for extracting broken or rounded bolts. I bought a small set 10 years ago and have used them many times.
It's a set identical to these.
Your best shot may be to get something like this: https://www.amazon.com/Extractor-Stripped-HassleFree-Hardness-63-65hrc/dp/B07GZ17QD9 .
It has one end to make or widen a hole, then the other end has a reverse twist to latch onto and screw it out.
I have a set like this and it essentially drills out a bit of the screw so you can flip the bit and it will grab and remove it. Super handy to have around.
Edit: Not sure if this one is small enough for that screw, but I bet there is a set for that size somewhere.
Do you have any torq bits? Their star pattern can sometimes grab a screw like that. Otherwise grab a screw extractor off amazon.
These are handy, too:
About 10 years ago, I ended up needing a set to get the drain plug off my Monte Carlo ('04, with the piston slap-happy 3.4L V6) after the previous owner had almost completely rounded off the bolt head. I didn't have access to a welder, so this was after trying Quick Steel putty on a socket, which I was able to hammer into place, but it broke as soon as I started to turn it.
With the extractor sockets, the fucker came right out on the first attempt.
I got this set awhile back and it's come in handy a few times already, most recently on some suspension linkage screws that would have been quite expensive to cut off and replace.
Be91eiter Damaged Screw Extractor Set, 22 PCS Stripped Kit for Broken Bolt All-Purpose HSS Remover Set with Magnetic Extension Bit Holder & Socket Adapter, Silver https://www.amazon.com/dp/B09C5MNHQY/ref=cm_sw_r_cp_api_i_NDT3J2NXAG2EREB7ZJXD?_encoding=UTF8&psc=1
Comes in really nice case for everything aswell
This looks like a Price Pfister? Under that handle will be a plastic spindle with metal pin that screws in to the plastic that has an indention where the hex screw rides (stripped hex screw in this case). I would give it a little penetrating oil and use an screw extractor to slowly back it out.
Hopefully it doesn't get to that point, because if it snaps, you may be able to tap it off-center with a flat head screwdriver in hopes it starts working free, or drill it and buy some of these to get the rest out.
And yeah, I imagine kroil would never hurt if it's stubborn.
To expand on what others have said. The bolt nearly broke inside what it was fastening. If the bolt had broke it's a very difficult process to remove the rest of the bolt and requires left hand drill bits, a steady hand, maybe a bolt extractor, and luck. When drilling the bolt out you have to make sure you don't damage the threads of what the bolt is inside of.
Invest in a set of these kind of screw extractors for when things get stripped.
I recently had to extract a couple M3 screws from some arm/axle parts on one of my cars and it saved my ass.
Yeah, if you have enough access to dremel a slot in the screw head, that would be the simplest. Next best would be a screw extractor (example). Third, simply drill out the center of the screw until the remains of the head pop off.
The first two should yield a usable standoff/screw hole on the other side, but drilling it out would likely leave it unusable.
I’ve tried the rubber band method and that did not work. I’ve stripped several gpu screws before and I’ve used the linked kit with the smallest bit to extract my stripped gpu screw. When using the kit be patient, it took me between 15-20 mins to remove one stripped screw. Be sure to use your drill in reverse and if it doesn’t work try a bigger bit. I had to move to the next biggest bit to remove a few screws that didn’t work with the smallest bit. Good luck! https://www.amazon.com/dp/B09C5MNHQY?ref=ppx_pop_mob_ap_share
Been there done that. Those installers suck! I'd try an extractor like this.
If you do end up having to remove the balancer, I'd recommend finding some all thread, a thick washer (3/8" steel plate), and a nut. Then when you're done installing you can just use vicegrips to pull the all thread out. Or weld a nut to the end of it if you use it often enough.
Try a easy out for the bolt. Or another trick would be to cut a groove in the head of the bolt and use a flat head screw driver to get it out.
IRWIN Screw Extractor, Spiral Flute, 6-Piece (53545) https://www.amazon.com/dp/B001D1FXDE/ref=cm_sw_r_cp_api_i_GK5DCV4R27Y6GQ9MZP31
Be91eiter Damaged Screw Extractor Set, 22 PCS Stripped Kit for Broken Bolt All-Purpose HSS Remover Set with Magnetic Extension Bit Holder & Socket Adapter, Silver https://www.amazon.com/dp/B09C5MNHQY/ref=cm_sw_r_apan_i_EYHXX17ZJQXGPMWGA5ZJ
I don't know if this is the exact set I have but I've gotten stripped screws out on airsoft guns before.
I did this exact same thing with my photon S the first time I tried changing the film. I used some screw removal bits: https://www.amazon.ca/Irwin-Industrial-53535-Extractor-5-Piece/dp/B00004YOBF/
Even grabbing the d-ring with pliers isn't working? Worse case scenario just pick up some screw extractors while you're at the hardware store. You'd need a drill and bit too to start a hole for those to grab into.
IRWIN Screw Extractor, Spiral Flute, 6-Piece (53545) https://www.amazon.com/dp/B001D1FXDE/ref=cm_sw_r_cp_api_i_4FTM9VAZM3HWP5ZFZFGK
Something like this, basically a left handed drill bit, once it grabs it should thread out
Personally, if not a problem I would worry about it.
I have a set that I use specifically on HP notebooks when this happens. I can't find the set on amazon, but this is somewhat similar to what I have:
I dont know what size exactly, no. But you can get a pack with 6 different sizes on Amazon.
something like this
I saw a bunch for around the same price. Looks like they have mm sizes listed in the descriptions
something like https://www.amazon.com//dp/B08PCT9WBB is gonna be your friend here, any decent hardware store should have a correctly threaded bolt even if the head may be different
I've never used this set but I've had good success with extractor sets.
6Pcs Screw Extractor Set, Damaged Screw Extractor Kit and Stripped Screw Extractor Set. Its A HassleFree Broken Bolt Extractor and Screw Remover Set Made From H.S.S 4341 With Hardness 63-65hrc. https://www.amazon.com/dp/B08PCT9WBB/ref=cm_sw_r_apan_glt_i_DCPGHK9E2B3YB1Q41XF5?_encoding=UTF8&psc=1
So there are stripped screw extraction kits you can get online, I've only had to use them in wood (and had one used on a stripped screw being removed from my ankle post-surgery, that was fun), so when it comes to using one on your rifle, I'd probably take it to an armorer tp avoid unnecessary or irreparable damage. You can try steel wool, a rubber band, or superglue as well to try and give your screwdriver more traction/friction on the screw first.
Be91eiter Damaged Screw Extractor Set, 22 PCS Stripped Kit for Broken Bolt All-Purpose HSS Remover Set with Magnetic Extension Bit Holder & Socket Adapter, Silver https://www.amazon.com/dp/B09C5MNHQY/ref=cm_sw_r_cp_api_glt_i_GA3SY7V0RR67T8K1SHSR
I’ve used this on a power drill and extracted striped screws on a laptop heatsink.
Screw extractor kit
Screw X-Tractor Damaged Screw Extractor Kit and Stripped Screw Extractor Set. Its A HassleFree Broken Bolt Extractor and Screw Remover Set https://www.amazon.com/dp/B07GZ17QD9/ref=cm_sw_r_cp_api_glt_i_B6HDHPMC77SVT0RGHQ4E
You could try using an easy out. They're sorta like reverse threaded drill bits.
Like this one. There are a couple different styles/brands so you may have to find one that best fits inside that hole to get a good grip.
It's too late now, but last time I had a very very well seized thru-axle even the LBS wasn't able or willing to get out, I eventually managed to extract it with one of these types of easy-out and a nice big wrench on the end. Took a heck of a lot of leverage and made some nasty noises, but came out without damaging anything other than the axle.
You could get these. I’ve used them more times than I care to admit:
Screw X-Tractor Damaged Screw Extractor Kit and Stripped Screw Extractor Set. Its A HassleFree Broken Bolt Extractor and Screw Remover Set https://www.amazon.com/dp/B07GZ17QD9/ref=cm_sw_r_cp_api_glt_i_KDPNQRFTHBF109V8C0K1
Thank you for the response. I tried something similar with the product below but all that happened was the easy out screw started stripping and couldn't get it to puncture the bolt. Not sure if I got something too cheap or if I'm doing it incorrectly
Get yourself a damaged screw extractor kit. Very handy to have a kit like this at home. Here's one that's somewhat reasonably priced (although right now, it's at its higher price of $11, but it occasionally sells top about $8.50 for short times): https://smile.amazon.com/dp/B08PCT9WBB/
Spin weld an Allen key onto the button head. Let it cool and the use a wrench. /s
Take a punch and dimple the side of the button head, then use the same punch to drive it out by hitting it
I used something like this from Harbor Freight last night to pull an M3 button head out of a CR6 3D printer:
a 6Pcs Screw Extractor Set, Damaged Screw Extractor Kit and Stripped Screw Extractor Set. Its A HassleFree Broken Bolt Extractor and Screw Remover Set Made From H.S.S 4341 With Hardness 63-65hrc. https://www.amazon.com/dp/B08PCT9WBB/ref=cm_sw_r_cp_api_glt_i_WHDDMSCMJFMJMC63RQQF?_encoding=UTF8&psc=1
Try turning the bracket. Or, cut the head off with a hacksaw or die grinder, etc. if you’re not concerned about the bracket.
You could try using a extractor tool to get it out. That or drill it out completely.
I have used screw extractors in the past with similar issues. I have a set like this in my tool bag. Amazon Link
Use a screw extractor along with penetrating fluid and possibly heat if needed.
IRWIN Screw Extractor
Speed Out Screw Extractor
This is the set I use. Watch some youtube videos if you are determined to try it yourself. Go slow. But I would strongly suggest you let a pro do it.
You’re best bet is probably using a screw extractor similar to this one:
Screw Extractor Kit
You can find them at your local home improvement store as well.
Get an easy out kit like this one https://www.amazon.com/dp/B07GZ17QD9?pd_rd_i=B07GZ17QD9&pd_rd_w=eTF7T&pf_rd_p=5a4c43eb-7872-4818-a785-e153f6c73149&pd_rd_wg=0X11b&pf_rd_r=KWJ97XZCFRQYMNY1ZZE7&pd_rd_r=53939ad1-268a-44e4-a202-cd79f2a31d83
Here’s a link to a screw extractor kit for small screws: https://www.amazon.com/Extractor-Stripped-All-Purpose-Magnetic-Extension/dp/B09C5MNHQY/ref=mp_s_a_1_1_sspa?crid=QBT5A0I5CZ5P
And a video on how they work: https://m.youtube.com/watch?v=iHs9VGEuhxI
Maybe try it manually (by hand) before resorting to an electric screwdriver.
Optimus should be able to tell you what type of screws the block uses (length and thread pitch). The small ones look like an M3, or maybe a 6/32.
Honestly, you can get the job done with being a bit more diligent with your selection.
https://www.amazon.com/dp/B00004YOBF/ $11 Irwin 5 piece.
https://www.jbtools.com/irwin-30520-left-hand-cobalt-5-64-inch-to-19-64-inch-cobalt-twist-drill-bit/ $25 Irwin reverse bit 5 piece.
I've dont just fine with this $36 10 pieces.
Here’s what I use for extracting stripped bolts, and it works on the Allen head bolts for accessories, too. Ditto to not using the Rad provided tools; getting a semi-decent set of Allen keys and replacing any accessory bolts when installing something should be “Best Practice” for any Rad owner
Damaged Screw Extractor Set, 22 PCS Stripped Screw Extractor Kit for Broken Bolt Extractor All-Purpose HSS Bolt Extractor Screw Remover Set with Magnetic Extension Bit Holder & Socket Adapter https://www.amazon.com/dp/B09C5MNHQY/ref=cm_sw_r_cp_api_glt_fabc_3QGEYD51A0WB10CYGC2Y?_encoding=UTF8&psc=1
I was trying to get some breather bolts off my bike that just wouldn’t budge and kept stripping. Got it off after letting PB Blaster soak it overnight and was using a driver for stripped bolts like this one
Irwin bolt extractor
Happened to me a few months ago. The plug is hollow so one of these fit and worked great: https://www.amazon.com/Extractor-Stripped-HassleFree-Hardness-63-65hrc/dp/B07GZ17QD9?ref_=d6k_applink_bb_marketplace
I was at a hobby workshop on a lift so i would have been stranded without it. Go slowly.
Its difficult to see the type of screw in the pic. Is it a hex head, or maybe torx? Either way, here's what I would try - in the order I would try.
Use a screw extractor like this. Use it as directed.
If that doesn't work, get an allan key that fits best. Clean it and the screw with alcohol. Use a small dab of superglue to secure the key to the screw. Be very careful to NOT glue the screw to the plastic housing - you'll be in a worse situation then. If in doubt of your ability to do this, skip this step.
Next, as /u/dcolecpa mentioned, cut a slot in the screw. Because the screw is recessed, you will cut into the plastic case. If you aren't OK with that, then skip this step. Using a cutting wheel, go slow, and try to no move the dremel once you start cutting. You want a clean cut with sharp edges for the screwdriver to bite into.
The last option I can think of is to drill the head off. Take the other screws out, and see what size the screw shaft is. You want a reverse twist drill bit just slightly bigger than that (maybe 1/64", or 1/32" larger - or, half mm, if you aren't in the US). Use slow speed, and medium amount of force right in the middle of the screw. When you are done, the screw head will start spinning. Once you have the head off, you'll need to use pliers to extract the screw shaft (I'd recommend vice-grip's to get a good grip). NOTE: There's a risk here that once you drill the head off, there's not enough screw sticking out to grab with pliers.
Regardless, you'll need to replace the screw. I would look at FastenAl for replacements. You probably want Pan Sheet Metal Screws.
Get screw remover from Amazon, one that has bit small enough. I have generic one like this and worked well to remove screw from pixel LS while back. Just remember to put drill on very very slow. https://www.amazon.com/Extractor-Stripped-All-Purpose-Magnetic-Extension/dp/B09C5MNHQY/ref=mp_s_a_1_1?keywords=Damaged+Screw+Extractor+Set%2C+22+PCS+Stripped+Screw+Extractor+Kit+for+Broken+Bolt+Extractor+All-Purpose+HSS+Bolt+Extractor+Screw+Remove...
Damaged Screw Extractor Set, 22 PCS Stripped Screw Extractor Kit for Broken Bolt Extractor All-Purpose HSS Bolt Extractor Screw Remover Set with Magnetic Extension Bit Holder & Socket Adapter https://www.amazon.com/dp/B09C5MNHQY/ref=cm_sw_r_cp_api_glt_fabc_83JF5A0RF4BY2AE74VY6?_encoding=UTF8&psc=1
Have you tried a screw extractor kit (I'm not especially reccomending this one in particular. Just showing the first link I found on the internet) big test of a couple brands with some funny conclusions from this guy
Damaged Screw Extractor Set, 22 PCS Stripped Screw Extractor Kit for Broken Bolt Extractor All-Purpose HSS Bolt Extractor Screw Remover Set with Magnetic Extension Bit Holder & Socket Adapter https://www.amazon.com/dp/B09C5MNHQY/ref=cm_sw_r_cp_api_glt_fabc_77E7QZMMEAZMJZJAM244?_encoding=UTF8&psc=1
You should try a screw extractor those little allen screws (usually) don't have a lot of torque on them, but might not be the case here if the previous owner stripped them. If they added loctite that could also make it trickier.
I bet if you call S&W about it they would fix it for free.
These bolt extractors worked the best for me, tho the vise grips did manage to get one out. Heat really helps, so hitting them with a torch prior to attempting to back them out can make all the difference.
You are not alone. Most of us have had this issue. You need a screw remover to get it out, and I still have not found replacements.
The problem is the industrial grade lok-tite they use. And the very soft steel. Screws should not be this cheap.
No they are not. https://www.amazon.com/Extractor-Stripped-All-Purpose-Magnetic-Extension/dp/B09C5MNHQY/ref=mp_s_a_1_1_sspa?crid=82KUDHSDIZ9O&dchild=1&keywords=stripped+screw+remover&qid=1633438530&sprefix=stripped&sr=8-1-spons&psc=1&sp...
That happened to me on 3 of the exact same screws on the spin segway max's. I bought this:
it didn't work as advertised. So.... don't buy that lol.
Screw extractor bits are handy to have; they're designed to make an even shaped hole (possibly not needed here for a stripped hex head) and then the other end will bite in and remove the screw.
Otherwise it really depends what tools you have available; you could do anything from grinding a slot for a large screwdriver to drilling out the head entirely to spot welding a piece of metal to it that you can turn or just finding something that wedges in tight enough to turn it.
I’ve used remove tools like these (but not this particular kit) to get them out, but personally I’ve never tried it on a screw that small. I don’t see why I wouldn’t work though, as long as the removal tool is small enough.
That screw should be a 5/64 allen. There have been some good suggestions on here to help you get that screw out but I I have another as a last resort to get it out.
The gabit micro extractors work very well. The portion meant to drill the hole for the extractor does tend to wear quickly but I have gotten many uses out of the extractor portion. I have removed even the smallest screws from numerous guns. These things pay for themselves. Never stripped the threads on countless guns and always gets the screw out.
Alden 4507P Grabit Micro Broken Bolt Extractor 4 Piece Kit - Small Bolt and Screw Remover - Made in the USA https://www.amazon.com/dp/B000Q60UOO/ref=cm_sw_r_apan_glt_fabc_G324SSW3J3VG4ZKA10M2
Well, your going to be stuck with an extractor then, you'll need a good quality drill bit (Dewalt or Bosch) and a center punch. The center punch is critical because when the bolt breaks off it's very uneven, you have to center the drill bit in the bolt, you want to start dead center, for the extractor, I like these.
Btw penetrating oil does not help when using extractors, it can make the extractor slip.
6Pcs Screw Extractor Set, Damaged Screw Extractor Kit and Stripped Screw Extractor Set. Its A HassleFree Broken Bolt Extractor and Screw Remover Set Made From H.S.S 4341 With Hardness 63-65hrc. https://www.amazon.com/dp/B08PCT9WBB/ref=cm_sw_r_cp_api_glt_fabc_6313HGA55D2GWGK8F5BS?_encoding=UTF8&psc=1
I couldn’t get the giant screws off the overflow drain in my tub, so I got a kit for removing stripped screws, and it worked like a charm. I found this on Amazon.
This kit has saved my ass multiple times when dealing with Benchmade's lead-based screws. Just make sure there's a correct sized bit, there's a lot of kits available like it, I'm just giving the first one I found as an example.
Best $13 spent when you regularly build anything that involves screws
Stripped Screw Extractor
I highly recommend this set.
They come in a cobalt option if you can find it choose that one. If not any of them are good enough.
They really are amazing and can handle these small screws.
looks like it’s stripped. You would need a screw extractor like this. afterwards you can get replacement screws on eBay.
The screws in ps3 aren’t of the best quality,and tend to strip. in the future make sure you use the right size, and high precision screwdrivers. wiha makes some pretty nice tools.
The tool of last resort. They served me well as a mechanic for swollen wheel nuts on cars and rounded off u-joint bolts on trucks. Seat the socket with a hammer so the teeth bite, spin it off with an impact. Heat makes a difference.
A bolt extractor socket might work.
Damaged Screw Extractor Kit and Stripped Screw Extractor Set. Its A HassleFree Broken Bolt Extractor and Screw Remover Set https://www.amazon.com/dp/B07GZ17QD9/ref=cm_sw_r_cp_api_glt_fabc_74XDGR49AE9DTDYKQVW1?_encoding=UTF8&psc=1
Damaged Screw Extractor Kit and Stripped Screw Extractor Set. Its A HassleFree Broken Bolt Extractor and Screw Remover Set https://www.amazon.com/dp/B07GZ17QD9/ref=cm_sw_r_cp_api_glt_fabc_QHY2ZTJR02CS774JXCH2?_encoding=UTF8&psc=1
Or dremmel the head to fit a flat head bit on a impact .
Try something like this Damaged&Stripped Screw Extractor Remover Tool and Drill Bit Set. Broken Bolt Extractor and Screw Remover Set of 6 Pcs https://www.amazon.com/dp/B0883575ZJ/ref=cm_sw_r_cp_api_glt_fabc_6W8QZTG7R5QJN3WY4P8N?_encoding=UTF8&psc=1
Screw extractor. Here's an example link. You'll still want to prep it by using some penetrating oil like "Liquid Wrench".
If that doesn't work then drill them out. You'll probably have to clean up the threads with a tap. If the thread area is destroyed then you'll have to use a larger drill and tap for the next size up of thumbscrew.
Some extractors like these would be great for this. There's already a centered hole and that metal is soft so the extractor can bite into it easily https://www.amazon.com/Extractor-Stripped-HassleFree-Hardness-63-65hrc/dp/B08PCT9WBB/ref=asc_df_B08PCT9WBB/?tag=hyprod-20&linkCode=df0&hvadid=475689981997&hvpos=&hvnetw=g&hvrand=10247179953075000456&hvpone=&hvptwo=&...