Torx screws are screwing me over

[tackit]

I buy impact rated bits. I got my set from Granger, they were on special for around $30. I don't think they make this exact set anymore, I think they updated the tools.

http://www.all-spec.com/products/073983....ApY-8P8HAQ

[schor]

I bought a Wera bit, the ones I wanted were not in stock. I was surprised at how tight a fit it was, I actually tapped in the bit with my brass hammer. Worked great and all screws have been loossened and inserts turned 1/4. I did break 6 inserts out of 64 (that's +9% ), not exactly sure why they broke, I did not tighten them any more than the others. I ordered a pack of 10 inserts for $50. And now I need an inch pounds torque wrench to get them to 45-50 inch lbs.

I am going to get some new quality screws, the ones now seem like junk.

[EdK]

(08-22-2014, 04:57 PM)schor Wrote: ...

I am going to get some new quality screws, the ones now seem like junk.

Wise decision.

Ed

[stevec]

schor, I'm sure you considered this but I was wondering if there might have been something in the pockets of the inserts that broke.
As you probably know the seat for the inserts must be dead flat for the insert.

[schor]

(08-23-2014, 06:25 AM)stevec Wrote: schor, I'm sure you considered this but I was wondering if there might have been something in the pockets of the inserts that broke.
As you probably know the seat for the inserts must be dead flat for the insert.

Once I broke the first one I did check for any debris on all the next ones, but I did not see any and still broke some. I wonder if they were already slightly cracked.