Torque Spec

Try googling " standard torque charts" Then simply choose what fastener size you want to torque. But if your going to go through the hassle of looking up torque specs, you should also make sure your torque wrench is calibrated to spec.

engineershandbook Nothing too vague about that link

Definitely an American Website.

the torque units are in U.S. units for metric fasteners.

^{btw, nice site.}

Well it fits right in with his dimensional description

I HAD to give you a GA for that. I noticed it too!! But you were first!!

Gave me a great laugh!!!!

No wonder that Mars probe got lost some years ago!!!!

When the USA put a man on the moon, there was no confusion,

only when mixing and interpreting units was a problem encountered.

This should have been a non issue with modern computers.

I believe the metric system is more precise and easier to learn from the beginning,

but having been reared on the English system,I have to mentally translate into English

any metric measurement to get a mental picture for the object size in my mind.

Dimensions that I am familiar with,such as wrenches and sockets,etc. are no problem

and are easy to identify on sight,except for a few that are very close,such a 13 mm

vs 1/2 inch,17 mm vs 11/16inch,19mm vs 3/4 inch etc.so I have put a paint spot on

all of my metric tools for easy identification.

My eyes are not as good as they once were,and I don't trust them like I used to.

0.42 ounce-meters.

1.0334625 inch-lb. ?

You caught that huh? An M4 screw 1/2 inch long

When I worked in the ship yard back in the early 90's.

We were told within (3) years all naval contracts drawings would be dimensioned in metric. And they were begin to do all their drawings in metric.

Well they tried it, and I had yard birds.... fitters and the like, ask me what 12mm is.

After a go around with them that they need to get accustom to the metric system.

I gave up..

I had to tell them, "Oh, 'bout 1/2 inch."

Their reply was, "Oh, that wasn't so hard now, was it?"

LOL!!!!

Tighten it just enough. That's about .0000003 inches elongation, which is the ONLY way to accurately torque a fastener.

Is "just enough" a two-finger vertical grip on the screwdriver or three? I kept looking for "snug" on my torque wrench but to no avail. I was thinking of mentioning a certain TLA commonly used as a measurement unit for very small distances in the construction industry, but then in the interest of our expanding membership, I opted not to.

Well, it's "just enough" to stretch it.

Try the "stretch" setting or scale. It's on the other side from the "twisty" scale and the marks are really tiny.

Listed as sound effects snick, snap or squeek!

ASME B1.1 Appendix B

And from google:

http://machinedesign.com/archive/nuts-and-bolts-specifying-fastener-torque

http://www.npfasteners.com/pdfs/max-rec-tightening-torque.pdf

WP

"But what if we don't have a torque wrench?" asked the apprentice mechanic.

"Then tighten it up until just before it breaks" replied the instructor.

"How do we know when it is going to break?" asked the student.

"That's why you need a torque wrench."

lmao....reminds me of someone I know..tsk..tsk...

LOL!!!

But most probably also true!!

The standard practice for small Phillips head screws is to tighten them enough so that a screw driver will strip out the Phillips socket in the screw head when you try to loosen it.

Especially after you get a little crevice corrosion.

The standard practice for small Phillips head screws is to tighten them enough so that a screw driver will strip out the Phillips socket in the screw head when you try to loosen it.

Check,

Now what?

The normal response would not be appropriate for the women and children in the audience, and would frighten the animals.

Reminds me of a fabricator I had.

I would put together a drawings package, and release these drawings to the floor. Now due to a tight scheduling these drawings may be as little as 80% complete. And in the routing pack, I would point out the issues.

The better fabricators always read through the routing package information and then looked through all the drawings, see the weakness before starting to fabricate it.

One fabricator would by -pass this, (no matter how hard you stress to look it over first) take the first drawing start fabricating, turn the page look at the second drawing and fabricate it, turn the page look at the third drawing and fabricate it, turn the page look at the fourth drawing and declare "OH &@#*!" and then redo the second fabrication.

You murder it up until it breaks and then you back it off a quarter of a turn.

Machinist Handbook hardcopy will at least dispell foggy notions

This is the universally recognized unit of fine measurement:

https://www.youtube.com/watch?v=Re6TtiCR6Bk

It's always been a standard when measuring. I was waiting for Starrett to bring the scale to their product lines, but Hell might freeze over by then, so where can I order one in the mean time?

In the National Laboratory in Paris....

You mean they moved it from Denmark?