B7100 Bolt

[Aharrold]

Hi,
I'm looking for the specification of a bolt used to attach implements onto a B7100, they are found along the side and also fit the front of tractor for attaching ploughs etc.
I know the thread is a fine thread. I'm looking to order in the UK online.
The bolt is 30mm long and about 9mm diameter and has a no7 on the Hex top.

 

[Tomcat]

http://www.kubotabooks.com/AutoIndex/index.php?dir=Tractor Parts Manuals/

 

[Aharrold]

Bolts galore!
Think I've found it as an M8x1.25x30
Can anyone clarify this?
Thanks

 

[mickeyd]

Welcome to the forum. A lot of good people here and now there is one more.

 

[volp]

Bolts galore!
Think I've found it as an M8x1.25x30
Can anyone clarify this?
Thanks

Thats right. Kubota uses metric standard. If you use Tomcats link you will find a parts lists for your tractor. It doesn't give the bolt dimensions but you can use the part number for a Google search and get the dimensions. One of the places is TractorJoe

Anders

 

[cb750k8]

Hi

This is not really the answer to your question.

An interesting site for anyone who needs to identify bolts and nuts.
http://pages.cs.wisc.edu/~bolo/workshop/thread.html

You need a Thread Gauge (ebay) and caliper or micrometer.

To really answer your question I took a bolt which looks very like yours (no 7 on the hex head) out of my B7200 and it is 8mm by 1.25mm

Don't know what the 7 means. Could be the grade of steel. If anyone knows or has the Standard I am interested.

Cheers

 

[cb750k8]

Found the answer to my earlier question (What does the 7 mean) See attached taken from the manual on Kubota 70mm engines.

 

[slowgo]

my B7100 has 10mmx1.25mm and I have bought them here local at the hardware store, I had to remove the original bolts to get longer ones

 

[kubotasam]

my B7100 has 10mmx1.25mm and I have bought them here local at the hardware store, I had to remove the original bolts to get longer ones

I am fairly certain slowgo is correct. 10 x 1.25 mm bolts.

 

[Russell King]

As far as the numbers on top of the bolts go ... They are some type of Japanese Automotive torque marking - I have never been able to remember exactly.

I think it is how much to torque the bolt to (in a metric scale) so the workers do not have to think about it too much.

I know it is not the true bolt strength of metric bolts that have a number, decimal point, number (8.8, 10.9)

 

[North Idaho Wolfman]

Here is a chart of the markings and meanings.