Maximum speed: 185 mph (298 km/h, 161 kn) at 13,000 ft (4,000 m)
Stall speed: 45 mph (72 km/h, 39 kn)
Range: 430 mi (690 km, 370 nmi)
Service ceiling: 22,800 ft (6,900 m)
Time to altitude: 8 min 30 s to 10,000 ft (3,000 m)
Guns: 1 × synchronized forward firing .303 in (7.7 mm) Vickers machine gun, 1 × .303 in (7.7 mm) Lewis Gun on Scarff ring in rear cockpit.
Bombs: Up to 520 lb (240 kg) bombs under wings
The Hawker Demon was a fighter variant of the Hart light bomber.
Hart Two-Seat Fighter – Two-seat fighter version of the Hart for the RAF.
Later redesignated as the Hart Fighter.
Demon I – Two-seat fighter aircraft for the RAF.
Australian Demon I – Two-seat fighter aircraft for the RAAF, similar to RAF version but fitted with a 600 hp (447 kW) Rolls Royce Kestrel V engine; 54 built (the first 18 delivered as general-purpose fighters in 1935 and an additional 36 for army co-operation duties delivered in 1936).
Australian Demon II – Two-seat training version for the RAAF, standard Demon fitted with dual controls and provision for target towing, 10 built.
Turret Demon – Two-seat fighter version, fitted with a Frazer-Nash gun turret in the rear cockpit.