Rated 4 out of 5Â by MadInventor Hole sizes
Used these in a grid pattern on the underside of the board to hold the clamps on a mdf sacrificial board on a CNC machine. I recessed with a 12.5mm dia. by 1.5mm deephole. Lead in hole of 10mm by 4mm deep to ensure an easy start when screwing them in and the actual through holes for the insert of 8.2mm. Perfect fit and a very useful way of easily securing clamps to the top of the board.
31 Jul 2016
Rated 5 out of 5Â by FastFreddie44 Stronger than you think
I used the 20mm insert nut (type D) in conjunction with 50nn joint connection bolts to attach the sides of a bed I was making, I wanted them to be a strong assemble but able to pull apart should the bed require moving its a large solid wood bed and the design was causing fixing issue I used 5 of these at each corner (3 would have done) into soft wood I drilled a 7:5mm hole but in harder material (like resin or in a knot) I would go to 8mm hole...I did snap the top off one trying to go into a knot ...
They are much stronger than screws alone
2 Jun 2016
Rated 3 out of 5Â by Grunty Good but exercise care
Good solution for strong and repeat assembly/dismantling in wood.
As others have said, the correct size of hole needs to be drilled first. But even so, the head into which the Allen key fits shears easily when screwing these into hardwood.
Once broken, the remnant is fiddly to remove!
1 Mar 2016
Rated 5 out of 5
Â by Coastie Just the job !
An excellent method of fixing into my new work tops ( self fitted) . Work tops were Apollo slab tech solid surface , and needed to be securely fastened, and with an under sink mount I needed the reliability and faith that the sink would be held in place when full of water and washing up. The fixings were screwed into the holes I drilled with then the M6 bolts neatly screwing in holding the brackets. A great fixing for these new style work tops.
3 Feb 2016