tractor [larger] sized metric nut and bolt assortment

[doneill127]

One last thing on the JIS bolts, aside from the heads being smaller for a given bolt size the grading system is different. Typical metric uses grades 8.8,10.9 and 12.9. JIS uses numbers like 6T, 10T etc. cannot vouch for the accuracy of this chart but it claims to compare the two grading numbers. JIS on the left ISO the right
https://forums.ninja250.org/uploads/853294.jpg

 

[bryanhawaii]

Just an FYI. On a Japenese
machine metric is not always the same as the rest of the world. There is a JIS standard that has different sizes and grades. Boltdepot.com has some good charts that show the differences. My Mitsubishi built Mahindra has ISO/DIN and JIS mix.
ANSI - American National Standards Institute
ISO - International Organization for Standardisation
DIN - Deutsches Institut f? Normung
JIS - Japanese Industrial Standard
* Indicates ISO standard.

Why don't the world get together and standardise a simple thing like threading of nuts and bolts!!!
Anyone know which 'standard' they used on the 1980's Ford compact tractors made in Japan?
Also, why don't we all drive on the same side of the road??

 

[CobyRupert]

Why don't the world get together and standardise a simple thing like threading of nuts and bolts!!!

....just look at the resistance (in this country) to the superior metric system.

 

[doneill127]

It’s really not that bad. There’s really only US and metric, the JIS throws a monkey wrench into the metric and it’s an old standard that’s not supposed to be used. You can tell what kind of bolt by the marking on the head. If it has slashes it’s US and the number of slashes determines the grade 2, 5, 8 if it’s metric it will have 8,10.9 or 12.9 on the head to determine the grade. The old JIS has the same metric bolt threads and pitch but has some smaller bolt head sizes than standard metric and has a different grading system stamped on the head such as 6T 7T 10 T etc. they are also harder to find.Bolt Depot - Bolt Grade Markings and Strength Chart

So with global sourcing and manufacturing cars, tractors etc can have a mix of any. My tractor from what I know was built in Japan, the FEL and backhoe are made in KS and the final assembly is done in TN. If you want to drive yourself whacky start looking at Phillips type screws. There’s a boatload of different cross type screws out there which is why I think I end up stripping so many bits and screw heads with my driver.

 

[/pine]

Machines and vehicles etc. made in the late 70's- well into the 80's are the worst for mixing up US standard and metric... on some vehicles just to tighten or replace a v-belt (pre serpentine) for an alternator or a water pump etc. would require both metric and standard tools...!

BTW if there are any ACE hardware stores there you might look there...most of them here stock a very good assortment of std and metric in all sizes...

 

[California]

I had a repair done at a dealer, and asked him if I could rummage through his bin of Metric nuts/bolts. No problem. He gave me some 10 lbs at no additional cost over the repair. A big ag or car dealer in Hawaii might be a similar opportunity.

 

[Sawyer Rob]

....just look at the resistance (in this country) to the superior metric system.

It's just NOT superior in my mind, and I'm fairly good with both systems...

SR

 

[CobyRupert]

It's just NOT superior in my mind, and I'm fairly good with both systems...

SR

Yes, I'm only fairly good with the Imperial System, only because I'm familiar with it. (Unless I try calculating energy. Horsepower to BTU (or BTU-hrs, or BTU/hr) or pound-ft? Or whatever? Or the convolution of mass versus weight: If I take a 10 kilogram (22lb) rock to the moon, it's still a 10 kilogram rock. If I take that same 22lb rock to the moon, it would be a 3.63 lb rock.) Any honest evaluation of the 2 systems....

Quick (in less than 5 seconds each) answer the following questions:

1a. How many grams in a kilogram: "Easy, the answer is in the word "kilo(1000)gram"
1b. How many grams in a pound: "Uh....lets see 28.3495 grams per ounce x 16 ounces per pound...**** it! ...where's my calculator?"
1c. What is a ton? 2000lb, 2204lbs or 2240lbs?

2a. How many centimeters in a kilometer: Easy (See answer in 1a). 1000 meters/km x 100 cm/meter = 100,000cm.
2b. How many inches in a mile: "I told you I can't find my calculator ...or conversion table!"


I get it. There was machinery re-tooling to consider, union resistance (remember those) as it was conducive to offshoring jobs, plus the metric system suspiciously seems sort of French!
Plus the Imperial System "was the way it always was and we liked it!"

 

[WranglerX]

Why don't the world get together and standardise a simple thing like threading of nuts and bolts!!!
?

If you can not deal with different systems you should probable consider letting others do all your nut and bolt work....

As for all going to one system, its slowly getting there... When you start tearing apart a new car you see part made in ????? so neither system is sacred.....

Dale

 

[WranglerX]

It's just NOT superior in my mind, and I'm fairly good with both systems...

SR

Ding, ding, ding.... We have a winner....

Dale