M5 25]-T Bolt Aluminum Connector-T Head Screw-T Bolt-for 2020 Series. MroMax M8-1.25x25mm T Slot Bolts Carbon Steel Drop-in Stud Sliding. POWERTEC QTB1008 T-Slot Bolts 1/4”-20 Thread Size T-Bolt 1.5 Inch. I hopped over to and here is a linkto some tnuts with the measurements.Top 10 T-Slot Bolts - Verified to Buy (Dec. 2023) Look for drawings like this one when you order to be sure: It does not spread the load properly and can burr the underside of your slot. If its a little tight take a file and sander to it. That is to say a 5/8s T nut will be undersized. The actual measurement has to allow some clearance for movement. If you use the T-slots for clamps, what sort have you found work well? Anyone know how T-slots are measured? The narrowest width of the slots is 11/32', which doesn't seem to correspond to the available sizes. I like the 'machinists clamp' style hold-downs, but I'm not sure which set is the correct size. If the part can hold the vacuum and does not cut into the pod area this is by far the best and easiest method. The clamps are made in full 3d on the indexer and given the machine time they are kind of expensive :rolleyes:Īfter all, I wish I had started the vacuum pod experiments much earlier. They can clamp from the top of the work piece or you can insert a Spax screw that goes into the side. The homemade low-profile hardwood clamps look like the pic below. The anodized table surface is so slick the bit will shove the work piece around without anti-slip. I cut a bunch of 2'x2'x0.75' plywood square 'pucks' with non-slip drawer sheet on both sides that I place between the work piece and the table under the clamps when there is a risk of going through.

I have a full surface extruded t-slot table (80/20 system, 1.5' thick) but no spoilboard.

They slide better in the slots, don't dent them inside and usually don't break the bit if it happens to hit the bolt But as mentioned before I throw them away and buy bronze carriage bolts from McMaster, available in various lengths. and better than the Incra hex head bolts. The ones that come with the clamp are O.K. I use the regular variety without the plastic shoes with 5/16' bolt. That seems like a lot of height above the surface being machined to get in the way of the moving carriage.Īlmost. You mean these 'Rockler Deluxe Hold Down Clamp'?

58 11 t slot bolt