No, there's almost no anal in those movies. Anal is usually carefully prepared for, well in advance, and that goes against the spontaneous nature of these scenes. One exception is found in 18 & Nasty 26. TT Boy was hanging out with Nacho in Prague (they're good friends in real life), and they went out clubbing with Jane Darling and Katy/Katerina/Lelloy. It was 3am when TT turned on the camera, as Nacho lay in bed with the women. Everyone was sleepy, but they did a scene, and Jane insisted on the anal, because that's the sort of freak she was (and hopefully still is).
But in general, Nacho saved the anal for his Killer Pussy movies, which were closer to traditional gonzo porn, with everything planned in advance. Sexx the Hard Way was somewhere in-between, with some spontaneous moments. Check out Sexx the Hard Way 10 in particular for some of the most anal you'll see in any Nacho movie (I really like Sindy Angel's scene).