5 mm hex key T-handle

There's already a bunch of hex key handles out there, but all of the metric ones topped out at 4 mm.

Here's a simple 5 mm one.

Moderately parametric model. I got lazy when it came to the handle, especially the fillets.

The zip-tie is recessed. The head sticks out a little bit, but it really doesn't bother me.

• head width is about 4.87 mm
• thickness: 1 mm

With the zip-tie, the hex key is very secure. I'd say it's necessary for use.

I used a pair of nail clippers to flush trim the excess off, & it's comfortable to hold.

The hex key slot fits closely; it could be a little closer.

The hole through which the key sits is the same size as the slot, but came out slightly small. I had to gently twist the key through. I'm going to leave the file as-is.

As for the my hex key dimensions, it turns out they aren't tightly standardized. Here are two tables I found for metric hex keys:

• https://www1.mscdirect.com/PDF/FASTENERS/HexKeys.pdf
• https://www.picclickimg.com/d/l400/pict/232898738291_/15-10MM-Metric-L-Arm-Allen-Hex-Key-Wrench-Steel.jpg

Neither of which match mine. Mine has a short arm length of 29 mm, & a long arm length of 73 mm.