From time to time, a track-geometry or other question comes up on the forum that depends on the Fastrack specifications. I don’t use Fastrack; and my Internet searches have never turned up anything useful, other than that the standard length of a straight piece is 10 inches. So I bought a 6-12016 “terminal section” to measure. I’ll post the numbers here for anyone who might need them:
The roadbed width is 3 11/32 inches. The railheads are about .64 inch above the table. The ounting-screw holes are .105 inch in diameter, but will take a flathead number-4 (.112 inch) screw with a little forcing. The Faston connector tabs are .125 inch wide. FE lists only one female connector for that unpopular size tab, 63705-1. It might be possible to force a .110-inch female on. Or, with a little Dremel work they could be cut down to .110 inch. However, a .187-inch female seems to work. The spade lugs on the other ends of the supplied cable will fit on a number-10 screw. However, the conductors are quite small, perhaps 20 AWG, and likely unsafe for more than about 4 amperes.
There is a post cast into the plastic under the longer pin at each end of the section, which is meant to snap into a slot at the next section’s shorter pin. For no obvious reason, this post protrudes below the roadbed by about .008 inch.