Roofing bolt /gutter bolt tooling

[damienga15de]

Does anyone make a driver for roofing/gutter bolts, iv a lot of cable tray to make up in the next few weeks I'm tired of using a large flat head screwdriver they don't get enough grip. A 11mm spanner works ok on the nuts but the heads are a pain.

 

[jeepboy4life]

Looks like a P3 to me, most roofing screws are going to be P3. Give it a try

 

[jd_1138]

Maybe use one of those low powered cordless screwdrivers to save time.

 

[damienga15de]

It's not a p3 the cuts in the head are flat and shallow. I'm going to make up a bit for my 10.8v impact

 

[jakemac]

Find a p3 or p4 bit with long grooves in the tip. Then grind the tip down to get the + profile you need.

 

[volleyball]

You'd also may have to grind down the v between blades as the p3 tends to round out to shaft diameter.
What about a drag link slotted bit?