Mystery socket size

J

JerryS

Well-known Member

• Apr 30, 2018

• #1

Is there a socket size that falls between 11/16 and 3/4? I'm trying to remove the blades from my JD zero turn, and I can't find a wrench that fits the blade bolts. The 11/16 is too small, and the 3/4 is too large. I tried metric sockets also with no luck. I know I'm overlooking something stupid, but.....

 

D

David G

Well-known Member

• Apr 30, 2018

• #1

23/32 if my math is right.

 

B

big jt

Well-known Member

• Apr 30, 2018

• #1

Chances are the head of the bolt is worn down. Had this happen to me on a JD 318 deck. My solution was to drill a hole in a piece of strap iron that would just go over the bolt head and weld it to the bolt. Use a hammer to unscrew the bolt and replace it with new.

jt

 

D

dpendzic

Well-known Member

• Apr 30, 2018

• #1

have you tried a 6 pt 3/4 socket?

 

OP

OP

J

JerryS

Well-known Member

• Apr 30, 2018

• #1

Dpendzic: I don't have one--yet. Will soon. Great idea.


JT: I considered the wear factor, but the corners on the hex head are still crisp and sharp.

 

O

Oliver 500 Wa

Member

• Apr 30, 2018

• #1

Did you try 18mm? My wife's Caravan has that size all over the front suspension. Not many metric wrench sets include 18mm.

 

J

john in la

Well-known Member

Location

What part of in La do you not understand

• Apr 30, 2018

• #1

18mm is between 11/16 and 3/4

 

E

Elton Fancher

Member

• Apr 30, 2018

• #1

I think the fellows who said 18 mm will be correct. A 19 is the same as a 3/4 so the 18 will be tighter and most newer stuff uses metric. 17 of course would be a little tighter if it would go on there.

 

S

Steve@Advance

Well-known Member

• Apr 30, 2018

• #1

Probably 18mm.

For some reason the packaging engineers often choose to omit that size from metric wrench sets.

 

D

David G

Well-known Member

• Apr 30, 2018

• #1

Duh on my part, the mower bolt on my JD is metric, so is Scag.

 

guido

Well-known Member

• Apr 30, 2018

• #1

Hello JerryS,

That would 23/32, Tried a 18mm yet?

Guido.

 

5

504

Well-known Member

• Apr 30, 2018

• #1

18mm is the same as 5/8,19mm is 3/4. The bolts will wear and the size my be anything. Six sided sockets are best.

 

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JRSutton

Well-known Member

• Apr 30, 2018

• #1

find the closest one and hammer it on. Somtimes nuts/bults - especially on mower blades - get dinged up. It just needs some persuading.

 

P

Poppa Noel

Member

• Apr 30, 2018

• #1

(quoted from post at 18:57:45 04/30/18) 18mm is the same as 5/8,19mm is 3/4. The bolts will wear and the size my be anything. Six sided sockets are best.

Click to expand...

1mm = .03936 soooooo 18mm is not even close to 5/8
5/8 is .6250 18mm is.7086
yes 19mm is about the same 19mm =.7480

 

G

grizz02

Well-known Member

• Apr 30, 2018

• #1

pipe wrench with a little heat, bolt needs to replaced anyway

 

S

Stephen Newell

Well-known Member

• Apr 30, 2018

• #1

There is a socket that is 23/32" which also happens to be 18mm.

 

O

Oliver 500 Wa

Member

• Apr 30, 2018

• #1

18mm is the same as 5/8

Click to expand...

5/8" is very close to 16mm. Only .005" difference.

 

J

Jim in Sask

Member

• Apr 30, 2018

• #1

I have a JD 425 from the mid-90's. The mower blades' bolts are 18 mm so your's might be the same.

 

J

jtc

Member

• May 1, 2018

• #1

i have a 25 /32 williams

 

W

W_B

Well-known Member

• May 1, 2018

• #1

(quoted from post at 03:46:58 05/01/18) pipe wrench with a little heat, bolt needs to replaced anyway

Click to expand...

A 24" pipe wrench is what I've had to use in the past, sometimes with heat too.

 

W

W_B

Well-known Member

• May 1, 2018

• #1

(quoted from post at 05:45:11 05/01/18) I have a JD 425 from the mid-90's. The mower blades' bolts are 18 mm so your's might be the same.

Click to expand...

My '07 JD X300 had two different sizes, but I think one of the spindles had been replaced at some point. One had the grease fitting on the top, the other was on the side.

 

Hobo,NC

Well-known Member

Location

Sanford, NC

• May 1, 2018

• #1

(quoted from post at 06:16:54 05/01/18) Probably 18mm.

For some reason the packaging engineers often choose to omit that size from metric wrench sets.

Click to expand...

Sets that are geared toward the average Joe yes, my guess to offer a set in the price range that's inviting to them "less is cheaper". Sets for the professional would be complete even with sizes you may only need once a year at best...

18MM has became a standard size on domestic applications when you get under the car/truck... Tool manufactures never give up going after your money haft sizes are rite nice to have 18.5, 19.5, 21.5, 22.5MM are right nice to have handy.... They can save time and aggravation when removing tires/wheels it does not take long for them to pay for themselves. ...

 

Crazy Horse

Well-known Member

• May 1, 2018

• #1

Elton ...... close but not the same as. I found out the hard way years back when making some kitchen cabinets. I bought 19mm plywood, the guy at the store told me to use my 3/4" router bit and it would work fine. So my first cabinet boxes were somewhat sloppy when fitting the pieces together. Bought a 19mm bit for the rest of the work and everything worked well. Not sure about sockets for fit but for cabinet making, a 19mm and 3/4" router bit are not the same thing.

 

R

Russ from MN

Well-known Member

Location

Bemidji MN

• May 1, 2018

• #1

If you don't have an 18 or can't get it on a 3/4 or a 19 6-point would probably work.

 

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Russ from MN

Well-known Member

Location

Bemidji MN

• May 1, 2018

• #1

18 is nowhere close to 5/8!

 

O

Oliver 500 Wa

Member

• May 1, 2018

• #1

.....but for cabinet making, a 19mm and 3/4" router bit are not the same thing.

Click to expand...

Wonder what the difference really was?

3/4" = .750"
19mm = .748"

Only .002" difference. That's about the thickness of a fine hair.