FiendFX
Well-known member
Does it really matter what brand? Craftsman, Duralast, Harbor Freight? Looking to get some local.
I never worry about this. While it is true most any hand tool today has a replacement it doesn't factor in much in my decision. I have busted a couple in my career, sears maybe but the 3 were 12$ and could be had for less than 10 at any good flea mkt. Warranty is a pain, replacement for 5$ almost painless.all those brand should do the job just fine. Buy whatever is closest to your house, in case you have to get replacement.
I like knurled extensions, so I try to buy those.
I always reach for locking extensions, can't lose a socket in awkward to get at places then!
How do the cheap ones hold up against twisting? If using one on a tq wrench could the extension twist instead of the bolt?
all extensions twist to some degree.
no matter how much an extension twists, it will never affect the torque applied to a bolt. if the torque wrench clicks, the bolt got all of it.
This is an incorrect statement. Any time you use an extension, you are putting a portion of the applied torque into stressing the extension body. Deflection of the extension shaft is absoultelying eating a good portion of the torque you wanted directed at the fastener. Think of the extension shaft as a spring, a torsional force applies to the dynamic end results in a rotational displacement relative to the fixed end. SImple mechanics of materials shows this is proportional to Youngs Modulus of elasticity and the extension cross section. An extension on a torque wrench is never good practice if you need a true torque reading.
Greyson
What ^ he^ said.....I guessThis is an incorrect statement. Any time you use an extension, you are putting a portion of the applied torque into stressing the extension body. Deflection of the extension shaft is absoultelying eating a good portion of the torque you wanted directed at the fastener. Think of the extension shaft as a spring, a torsional force applies to the dynamic end results in a rotational displacement relative to the fixed end. SImple mechanics of materials shows this is proportional to Youngs Modulus of elasticity and the extension cross section. An extension on a torque wrench is never good practice if you need a true torque reading.
Greyson
no matter how much an extension twists, it will never affect the torque applied to a bolt. if the torque wrench clicks, the bolt got all of it.
http://www.harborfreight.com/9-piece-14-in-38-in-12-in-drive-wobble-socket-extensions-67971.html
Taiwan made. I use them more often than my usa made cman and proto. With a coupon they are around $10.