2.5mm 1/4" square drive torque wrench bit

Tjm208

Hi all,

I'm looking for a 2.5mm allen key bit for my BBB torque wrench (http://bbbcycling.com/accessories/tool-boxes/BTL-73). It has a 1/4" square drive. So far the best solution I've found involves buying 2 different kits, one of which has a 1/4 square to hex adaptor, and the other of which has a 2.5mm hex bit, but I'm hoping someone has spotted one bit or at least kit that will do the job?

Thanks,

dgunthor

your local RS components store:

http://uk.rs-online.com/web/p/products/8756782/

photonic69

What are you torquing with a 2.5mm bit? It can't be anything too tight at that size. Are you sure your torque wrench is accurate at that end of the scale? I'd just go finger tight with that size fastenings.

Tjm208

dgunthor wrote:

your local RS components store:

http://uk.rs-online.com/web/p/products/8756782/

Thanks, but it needs to have a female end to accept the torque wrench... I could get this one with a square drive adaptor though possibly

Tjm208

PhotoNic69 wrote:

What are you torquing with a 2.5mm bit? It can't be anything too tight at that size. Are you sure your torque wrench is accurate at that end of the scale? I'd just go finger tight with that size fastenings.

Adjustment cone on a hub... No you're right actually, lower limit is 2nm and I need 1.1nm. Firm but not ridiculously so using the short end of the allen key as the lever sound about right?

photonic69

1.1Nm is about 370 grams of force 30cm away from the axis which is about 1 tin of beans (420grams) about 25cm away. If you can imagine that then you'll be in the right ball park. :-)

Tjm208

Thanks!