How to remove a rounded hex grub screw?

Joined
24 Feb 2007
Messages
557
Reaction score
3
Country
United Kingdom
Anyone know how I can remove this to replace? Many thanks!
76748612-8B68-4FDC-8707-F07F53A9F7ED.jpeg
72F75E64-AAB5-4A49-BCF4-66F49144A761.jpeg
 
Sponsored Links
Drill it with a HSS bit and use a screw extractor
 
What is that "red" stuff in the hole?

Is that a small [almost] circular "hole" in the base of the old screw?
 
Sponsored Links
What is that "red" stuff in the hole?

Is that a small [almost] circular "hole" in the base of the old screw?

The red is just staining. The grub has already been drilled some so appear circular on the photo rather than hex..
 
if you drill it, use a left-handed drill, at low speed. The torque, heat and vibration will often loosen and wind out a damaged screw. Start with a small one, centred, and gradually increase.

drilling clockwise will only drive it in more firmly.

use a vice and a drill press, at the least.

please don't use a stud extractor unless you are skilled and/or have a tool to hold it steady. These extractors are very hard and brittle. Removing a snapped extractor is a lot more work than removing a burred screw.

You are very wise not to tell us the dimensions of the part, or what it is, because this prevents anyone giving you specific advice.
 
Probably a bit late now as you've tried drilling it but more often than not a torx bit hammered into the hex head will release them
 
Many thanks for all the help guys. I managed to work it out! Happy man :)
 
Nothing too drastic.. Used the hex option above, wd'd, hammered in a slowly worked it out :)
 
Guys does anyone know what type of thread is on this? I purchased a replacement but it’s incorrect and I’m unsure of what it’s called and what to search for?

correct in right
63C721D7-99B3-4036-855E-85A0875261B8.png
 
you are going to have to tell us the dimensions

and what it's off

what country it is from and when it was made.

Dimensions... very accurately.... in mm.

threads per inch if you can count them
 
if you drill it, use a left-handed drill, at low speed. The torque, heat and vibration will often loosen and wind out a damaged screw. Start with a small one, centred, and gradually increase.
.
didn't know such things existed - thank you
 

DIYnot Local

Staff member

If you need to find a tradesperson to get your job done, please try our local search below, or if you are doing it yourself you can find suppliers local to you.

Select the supplier or trade you require, enter your location to begin your search.


Are you a trade or supplier? You can create your listing free at DIYnot Local

 
Sponsored Links
Back
Top