blade bolts for GR2020

[LAN20514]

The manual only states to use the proper metric size box or socket wrench, but it doesn't list a size. Any idea the MM size? I'd like to purchase the correct one since I don't have a metric socket that large.

 

[GeoHorn]

Put calipers on it.

 

[lmichael]

If it's like the deck under my G2160 they're 30mm

 

[LAN20514]

Put calipers on it.

I don't have those

 

[Russell King]

I don't have those

Then put a crescent wrench on the bolt head and then measure the distance between the jaws after you remove the wrench (being careful not to adjust the jaws much at all). Try to use a metric measurement device since it is probably metric.

Or climb under it and directly measure from flat to flat on the head.

Take that measurement and see what wrench you need at the store and measure it to be sure it is close. Most metric wrench sizes will be even numbers like 30, 32 mm …

 

[GeoHorn]

Then put a crescent wrench on the bolt head and then measure the distance between the jaws after you remove the wrench (being careful not to adjust the jaws much at all). Try to use a metric measurement device since it is probably metric.

Or climb under it and directly measure from flat to flat on the head.

Take that measurement and see what wrench you need at the store and measure it to be sure it is close. Most metric wrench sizes will be even numbers like 30, 32 mm …

Uhhh… the sets of impact Metric sockets are typically:
10 mm, 11 mm, 12 mm, 13 mm, 14 mm, 15 mm, 16 mm, 17 mm, 18 mm, 19 mm, 21 mm, 22 mm, 26 mm, 27 mm, 29 mm, 30 mm, 32 mm, 35 mm, 38 mm, 41 mm,

Yeah, it’s goofy… Don’t know why…but it is…

 

[Hugo Habicht]

Yeah, it’s goofy… Don’t know why…but it is…

The head size (line "s" in table) as per ISO 4017 is derived from the thread size (typically around 1.5 times the thread diameter) . Was recently changed for M10, 12, 14 and 22. Nothing goofy about it.

At least older Kubota tractor bolts do not adhere to DIN933 or ISO4017. Don't know how it looks on newer models.

 

[Bee-Positive]

Looked up replacement bolts on Messick's. Not sure if it's the right one so you may want to double check.
Seems to be an M12 so 18mm according to Hugo's chart.

Simplest method - take a bolt out with a crescent wrench, run down to your favorite retail shop, check the fit, buy the socket your happiest with.

 

[GeoHorn]

Looked up replacement bolts on Messick's. Not sure if it's the right one so you may want to double check.
Seems to be an M12 so 18mm according to Hugo's chart.

Simplest method - take a bolt out with a crescent wrench, run down to your favorite retail shop, check the fit, buy the socket your happiest with.

NAaaawwww….. Buy the WHOLE SET of Sockets! That way you’ll have a nice, organized “rack” to keep them in. You’ll never be satisfied with the odd, “loose” one in the toolbox…. Especially after you DO finally succumb and buy the entire-set and have that One, Odd one laying in there. BTDT

 

[Hugo Habicht]

Looked up replacement bolts on Messick's. Not sure if it's the right one so you may want to double check.
Seems to be an M12 so 18mm according to Hugo's chart.

The blade bolts are special, they are not your "normal" hex bolt. The head is much bigger. As far as I remember it was 30mm on my deck.

And GeoHorn is right: buy the set. All bolts on the the tractor are metric size. The socket set I bought years ago actually had metric and imperial sizes in it.

 

[lugbolt]

30mm or 1 3/16 either one works. 6 point preferred and I usually machine the recess off of the socket so it'll grab the rounded blade bolts.