Crash Bandicoot
Thread starter
The Apollo Lunar Module Guidance computer was done in metric just had imperial displays since that is standard in aviation.
The Apollo Lunar Module Guidance computer was done in metric just had imperial displays since that is standard in aviation.
There are "SAE" sockets and wrenches. They are based on the English/Imperial measurement system.The quick answer is there is no such thing as SAE sockets or measuring system.
This literally happened. The public didn't understand that 1/3 is bigger than 1/4, because 4 is bigger than 3. This was in the 70s or 80s, too. So our educational system has been failing the masses for decades. LolIf you say so.
Really? How did I never notice that? Lol. Been using clippers for 20+ years and never figured that out. HahaLike the snap on (not the brand) length guards on hair clippers. They're 1/8" based (#1 = 1/8, #2 = 2/8, etc).
If someone can't realize that a 1/2 inch socket is bigger than a 1/4 inch socket, then something is really wrong, lol.i would say that if a numeric system based on the inch, ( .500 for 1/2" for example) was used, it would be easy for the sizes to get mixed up.
the difference in the systems make then easily distinguishable from each other.
Torque specs are way more complicated than that, regardless if the fastener is SAE or metric.metric based bolts are torque based, mean all 10mm bolts are supposed ro be torqued to X and 14mm and to be torqued to X. At least rhat is how i understand it, explained to me by a pump engineer. No specs need per unit, if it is size Y it get torqued to X value.
Plus it's really about the designed clamping force.Torque specs are way more complicated than that, regardless if the fastener is SAE or metric.
A fastener spec is not the system of measurement.There are "SAE" sockets and wrenches. They are based on the English/Imperial measurement system.
View attachment 184933
United States customary units - Wikipedia
en.wikipedia.org
What Is the Difference Between SAE & Metric Sockets? | Hunker
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.www.hunker.com
I didn't say or claim they were. Said the SAE standard was based on the English/Imperial measurement system.A fastener spec is not the system of measurement.
If you read the links I posted, it was SAE who came up with the fastener standards (which in turn needed the matching tools), not "bench racers".The term SAE for fractional sizes came from the normal automotive bench racers that seem to like inventing certain automotive terminology's.
Industry terms/nomenclature and bad spelling/grammar are completely separate topics.Like the new term for BRAKES on a vehicle are now, BREAKS.
Well, that is how it was explained to me. I understand what you are getting at, but max torque value is commensurate to size of bolt, so it makes sense. This was from an engineer of a German pump company that I know. That is how they relay proper torque values to tech in the field, say in Saudi Arabia.Torque specs are way more complicated than that, regardless if the fastener is SAE or metric.
That's just one factor, and yes obviously larger diameter thread fasteners can take more torque in general. But just the material the fastener is made of (ie, fasterner "grade") for the same exact sized fastener can drastically change the torque value. Thread pitch, dry or lubricated threads, application, etc ... some other factors involved. Look up torque specs for fasteners that include the size, grade, thread pitch, dry or lubed threads, and you can see how all those factors effect the torque spec.Well, that is how it was explained to me. I understand what you are getting at, but max torque value is commensurate to size of bolt, so it makes sense.
Yes standards, NOT THE MEASUREMENTS stamped on a wrench. Using the term SAE to describe a size of an opening in a wrench is from the years of bench racers or ones sitting on a bench drinking a beer trying to figure out how to differentiate a metric measured tool from a tool that uses fractions of an inch to describe its opening. Never in the mid 50's was the SAE term used to describe an open box end wrench or sockets size capability.If you read the links I posted, it was SAE who came up with the fastener standards (which in turn needed the matching tools), not "bench racers".
It applies here, same passed on nonlogic. What really hurts is when so called professional writers or outfits use the incorrect nomenclature.Industry terms/nomenclature and bad spelling/grammar are completely separate topics.
Basically the measurement of the distance across the flats on bolt heads IS stamped on the wrench/socket. What do you think a wrench or socket stamped with "1/2" means? What do you think a wrench or socket with "12 mm" stamped on it means?Yes standards, NOT THE MEASUREMENTS stamped on a wrench. Using the term SAE to describe a size of an opening in a wrench is from the years of bench racers or ones sitting on a bench drinking a beer trying to figure out how to differentiate a metric measured tool from a tool that uses fractions of an inch to describe its opening. Never in the mid 50's was the SAE term used to describe an open box end wrench or sockets size capability.
The guy and his team mostly responsible for the development of the US space program, the early rockets through the Saturn V heavy launch vehicle were not Americans and grew up on the metric system. So there is that. LOL
To go back to your given examples, "SAE" is a common term to refer to fractional hardware and tools.It applies here, same passed on nonlogic. What really hurts is when so called professional writers or outfits use the incorrect nomenclature.