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Need to remove a bolt w/no corners. Any advice?

b0mbrman

Lifer
Jun 1, 2001
29,470
1
81
It would seem that I've got a bolt that's stuck and has no corners...short of sawing the damn thing off, is there any solution? I've got the standard tools but no torch...
 

Moonbeam

Elite Member
Nov 24, 1999
74,754
6,766
126
First some WD40 then you can try some clamping pliers, etc, or you could try to file a couple of parallel straight edges on it and use a crescent wrench. A lot depends on how big it is, how easy to get to, etc.

Don't forget to tap it with a hammer, etc after you use the WD 40 to loosen it and to help the oil to penetrate.
 

43st

Diamond Member
Nov 7, 2001
3,197
0
0
Tap out the center of the bolt with a tap set. Take a hammer and center punch to the remaining bolt. It will shatter and fall out of the hole.
 

b0mbrman

Lifer
Jun 1, 2001
29,470
1
81
Originally posted by: Moonbeam
A lot depends on how big it is, how easy to get to, etc.
That's been the biggest problem so far...it's pretty small and hard to get to...damn that Toyota...

 

geno

Lifer
Dec 26, 1999
25,074
4
0
Originally posted by: FenrisUlf
Take a hacksaw or Dremel, cut a slot in the top and unscrew it with a screwdriver.

that's what I'd suggest.
 

Moonbeam

Elite Member
Nov 24, 1999
74,754
6,766
126
10mm, ah man is that foreign or something. I don't do foreign bolts. It could be French. What is 10mm in like English?
 

rahvin

Elite Member
Oct 10, 1999
8,475
1
0
Originally posted by: Moonbeam
10mm, ah man is that foreign or something. I don't do foreign bolts. It could be French. What is 10mm in like English?

Damn french and their evil metric system!
 

BooneRebel

Platinum Member
Mar 22, 2001
2,229
0
0
Originally posted by: Moonbeam
10mm, ah man is that foreign or something. I don't do foreign bolts. It could be French. What is 10mm in like English?
Reading this made my head hurt. .394 in, about 13/32 if you're rummaging around your toolbox.

 

guyver01

Lifer
Sep 25, 2000
22,135
5
61
Try the GatorGrip Socket
Another Link

i've seen them in Target Stores.. but not online...

The revolutionary socket design automatically adjusts to fit any nut or bolt from 1/4" to 3/4" , 7-18 mm! Works great on metric, standard, wing nuts, broken nuts, stripped nuts, eye bolts, square nuts, hexes and more! Save Time! Save Work! Save Hassles with GATOR GRIP!


 

Moonbeam

Elite Member
Nov 24, 1999
74,754
6,766
126
A) BOLT HEAD CLEARLY ACCESSIBLE

I have used the following emergency fix for several of the above situations, including CV joint bolts on two different 911s and a brake caliper bracket on my Audi. This works for the smaller size Allen head bolts in my experience (up to approx. 8 mm hex). Get a good quality 6" pipe wrench (mine is by Ridgid); this small size will allow you to get into relatively tight areas. Wrap it around the bolt and pull up the slack. Now, whack the end of the wrench with a good size hammer. The wrench head will bite into the bolts and provide a good grip; the hammer will help shock the bolt loose.

B) BOLT HEAD NOT TOTALLY ACCESSIBLE

I found this method when I stripped the 6 MM bolt heads holding the seat in place; these are buried inside a U-channel, and you only have access to about a 30 degree arc on the bolt head. With a quality center punch and a heavy hammer, knock a centering kink in the center of the side of the bolt head (right angles to shaft, parallel to mounting surface). Now, while holding the center punch in the indented hole, move the punch head to the right slightly so that the punch is at an angle to the bolt head. Give the punch a sharp wrap with the hammer; if you're lucky, should be able to break the bolt free with a few tries.
 

NogginBoink

Diamond Member
Feb 17, 2002
5,322
0
0
Just to ensure you're not overlooking the obvious: is there perhaps a nut on the other end of the bolt that you can remove, then slide the bolt out of its hole?
 

Mill

Lifer
Oct 10, 1999
28,558
3
81
Originally posted by: Moonbeam
A) BOLT HEAD CLEARLY ACCESSIBLE

I have used the following emergency fix for several of the above situations, including CV joint bolts on two different 911s and a brake caliper bracket on my Audi. This works for the smaller size Allen head bolts in my experience (up to approx. 8 mm hex). Get a good quality 6" pipe wrench (mine is by Ridgid); this small size will allow you to get into relatively tight areas. Wrap it around the bolt and pull up the slack. Now, whack the end of the wrench with a good size hammer. The wrench head will bite into the bolts and provide a good grip; the hammer will help shock the bolt loose.

B) BOLT HEAD NOT TOTALLY ACCESSIBLE

I found this method when I stripped the 6 MM bolt heads holding the seat in place; these are buried inside a U-channel, and you only have access to about a 30 degree arc on the bolt head. With a quality center punch and a heavy hammer, knock a centering kink in the center of the side of the bolt head (right angles to shaft, parallel to mounting surface). Now, while holding the center punch in the indented hole, move the punch head to the right slightly so that the punch is at an angle to the bolt head. Give the punch a sharp wrap with the hammer; if you're lucky, should be able to break the bolt free with a few tries.


I have read that before. What article is that from?
 

b0mbrman

Lifer
Jun 1, 2001
29,470
1
81
Originally posted by: guyver01
Try the GatorGrip Socket
Another Link

i've seen them in Target Stores.. but not online...

The revolutionary socket design automatically adjusts to fit any nut or bolt from 1/4" to 3/4" , 7-18 mm! Works great on metric, standard, wing nuts, broken nuts, stripped nuts, eye bolts, square nuts, hexes and more! Save Time! Save Work! Save Hassles with GATOR GRIP!
I have the Gator Grip! It does nothing! :)
 

b0mbrman

Lifer
Jun 1, 2001
29,470
1
81
Originally posted by: NogginBoink
Just to ensure you're not overlooking the obvious: is there perhaps a nut on the other end of the bolt that you can remove, then slide the bolt out of its hole?
Nope...just the screw