If you just google: "Uni-loc radial pin installation"
It's the first hit you get.
It's all there, bore and ream a .312" hole, chamfer and tap. There are two different taps, the regular Radial tap and the undersized one. If I tap in hard materials, like phenolic og Garolite I use the regular tap, in wood I use the undersize tap. The taps are pretty pricey, over $100/each.