On one bicycle, you will see both the metric and SAE system. Most threading is metric, but not all. Axles on most bikes will use a 9mm threading for the front axle, and 10mm for the rear axle. Bottom brackets are commonly 1.375 inch with thread pitch of 24 threads per inch.
Are Trek bikes metric or standard?
The small stuff that doesnt need to conform to standards is all metric. The practical answer to your question is that all fasteners are metric threaded and require metric Allan keys or metric open end or socket wrenches. That applies to “American made” bikes (Trek, Cannondale, Litespeed, etc.) as well as all imports.
Are SAE and metric the same?
While the majority of bolt-type fasteners used in the United States conform to one or the other measurement scale, the difference between SAE and metric fasteners (and their corresponding sockets) is as profound as the difference between yards and meters: They are almost the same, but not quite.
Do you need SAE and metric?
You can usually get by without many SAE wrenches and sockets, but when you do need them you’ll be happy you have a set. I would say unless you’re working on domestic cars only, start with metric sets first. … Metric are becoming much more common on all things cars, motorcycles, and even domestic trucks.
Are Schwinn bikes metric?
All though a smattering of Schwinns are Imperial, for some God-Forsaken reason. Everything post 1980 is metric. At the bike path the average amount of wheels on a bicycle is two. The average amount of wheels on a pair of inline skates is eight.
Are bike parts metric?
On one bicycle, you will see both the metric and SAE system. Most threading is metric, but not all. … Components will be fitted with metric fasteners using metric wrench sizing, but the chain is a one-half inch pitch. Ball bearings on a bike are inch sized, from as small as 1/16th-inch up to 5/16-inch.
Is Honda SAE or metric?
Registered. All fasteners on almost all modern cars are metric. Yours are all metric, Honda has always been metric.
How do you tell if a bolt is SAE or metric?
If the bolt head is marked with 8.8, 10.9 or 12.9, it’s a metric bolt and diameter, head, length and thread pitch are measured in millimeters. If the bolt has only three or six lines pointing toward the center of the head, the bolt is standard SAE (Society of Automotive Engineers).
Who uses SAE?
SAE is commonly used in North America to indicate United States customary units (USCS or USC) measuring systems in automotive and construction tools. SAE is used as a tool marking to indicate that they are not metric (SI) based tools, as the two systems are incompatible.
Does Mercedes use metric or SAE?
You only use the metric side.
Why does US not use metric system?
The biggest reasons the U.S. hasn’t adopted the metric system are simply time and money. When the Industrial Revolution began in the country, expensive manufacturing plants became a main source of American jobs and consumer products.
How do you convert SAE to Metric?
SAE to Metric Calculator
The formula for that conversion is 1 mm = 1⁄25.4 inches, which is approximately 0.039″.