The Nikon 28-80mm G is a dinky 7-ounce (190g) plastic zoom with incredibly good performance. Incredible means unbelievable. The performance of this lens is so good that no one will believe it possibly can come from a lens this cheap.

Maximum Aperture

28mm: f/3.3
35mm: f/3.8
40mm: f/4 
50mm: f/4.5
56mm: f/4.8 
62mm: f/5
70mm: f/5.3
80mm: f/5.6

The manual for the Nikon 28-80mm G is bigger than the lens.

The manua erroneously claims the 28-80G has a nine-bladed diaphragm, while it really only has seven, as expected.

The manual also warns the 28-80G won't autofocus on an N6006 (F-601) or N2020 (F-501). It works great on N6006 and N2020. I suspect the caution is because those cameras have primitive AF systems which prefer lenses of at least f/4.5, so you're pushing it at the long end of the zoom with only f/5.6.