Graflex Pin Tool

What’s the precise size of tool for TCS electrical pins? I’ve inserted them with needle nosed pliers, but that inevitably scratches the hilt, the saber, or both. I’ve found a tool called a precise nut driver—just what I need. I have no idea what size to order, though. Can anyone help me out? Thanks.

I could be wrong but I thought at one point somewhere I saw 1/8 hex.

Yep. It's 1/8" hex.

Thanks!

Thanks to all for posting this. I was also wondering about how to get them screwed in when I can build my hilt.