POWERTEC 71168-P2 T-Track Hold Down Clamp, 5-1/2” L x 1-1/8” W, 4 Pack, T Track Clamps for Woodworking

Bought for hold down on cnc, works great on applications where space allows

I use these for workholding jigs in my woodshop. I like the little protective rubber tips on these. These work fine in the Powertec T-tracks that I use in my shop. I think the T-bolt is a 5/16” size. In one project involving a T-track on a straightedge device from another company, the Powertec T-bolt wouldn’t fit in the track so I replaced the T-bolt on the clamp with a 1/4-20 T-bolt and replaced the star nut to match, but I had those on hand so it was not a problem. I guess the other option would have been to file down the head of the T-Bolt until it fit. I recommend these hold-downs and will order more when I need them, but I do recommend checking first to see the T-tracks you use in your shop can accept 5/16” T-Bolts.

Comes with long 5/16 T-bolts for effective clamping.

I got these specifically for my X-Carve CNC as I'm not a huge fan of the plastic hold-downs that come with the kit. While there are likely better options on the market than these, for someone who does this as a hobby, these seem to work fine for me. Now, I did add another flat washer and a split lock washer to these clamps (you probably don't need to) but they keep my boards in place as the CNC does it's thing and that is exactly what I wanted.

I bought these to hold down a cutting-board-sized piece of wood to my toolbox to keep it from slipping (and I can still move it around as I need it) which I use for cutting, trimming and many other things (I have very small spaces to work in so I need multi-functionality as much as possible). These clamps hold it down perfectly. I am very well pleased with the whole thing, very sturdy (my board does not move at all), and good materials. Definitely I will buy again!

Factoring in what I want, this is a nice set for the money. They’re functional for T-tracks and provide the versatility with my CNC too. The padded ends help with grip and also to prevent clamp indents on my materials. The pads look cheap, so as to how long they'll actually last with repeated use, remains a question that time will tell.

Good quality

These are high quality pieces with easy to turn handles.Initially, these "T" parts didn't fit into my T track - just a bit too wide. Problem solved with a couple minutes on a grinder - work great!