M55e Jico SAS

[CageyH]

M2.5 size

Never overtighten. I've seen several cartridges damaged by this.

If it is an M2.5 nut, it should be 5mm across the flats, so something like this will be good https://www.amazon.co.uk/Wera-Kraftf...5mm+nut+driver

[CageyH]

I expect they give better grip too. I am using steel washers so that maybe my problem?

They should not need to be really tight.
M2.5 nylon washers are dirt cheap, so it could be worth picking a few up.

[Jimbo]

They should not need to be really tight.
M2.5 nylon washers are dirt cheap, so it could be worth picking a few up.

Cheers Kev,
to be sure I have bought these
https://www.amazon.co.uk/driver-smal...K9M54ESTZNZK9R

[CageyH]

Just remember that M2.5 has a torque requirement of 1.43 Nm, which is not very much at all....

[walpurgis]

Those are socket head drivers that you've ordered, like allen keys, not spanners, they won't tighten nuts. The link you were shown was the correct item. Unless you really want socket head drivers, cancel the order and get something else.

[CageyH]

Well spotted Geoff.

[walpurgis]

This: https://www.ebay.co.uk/itm/BERGEN-To...8AAOSw43hZ-dJx

[Jimbo]

This: https://www.ebay.co.uk/itm/BERGEN-To...8AAOSw43hZ-dJx

cheers Geoff, order cancelled and I will order the Bergen spanners.

[walpurgis]

I take it you have allen keys to hold the bolt heads still as you tighten the nuts? Assuming of course that they are socket head bolts.

[Jimbo]

I take it you have allen keys to hold the bolt heads still as you tighten the nuts? Assuming of course that they are socket head bolts.

I have allen keys. I think I will get a better feeling for torque using the spanners as I agree I don't want to tighten the nuts too tight.

Bloody fiddly process with my fat fingers!