Tab identity and wire range
The 280080-1 is the male tab member of TE's Fastin-Faston quick-disconnect terminal line, accepting 10-11 AWG wire with a 0.250" (6.35mm) tab width. The brass contact is non-insulated and terminates via crimp; the free-hanging design mates with a matching female receptacle of the same tab width.
Wire range and tab dimensions
Within the 0.250" tab-width class, the 280080-1's 10-11 AWG acceptance sits above the 15-18 AWG of the 1-1627194-4 and the 18-22 AWG of the 927899-2 — the tab thickness and contact material are shared across the group, so the wire gauge is the selection axis.