Wire diameter ends up to 0.8mm are squared and unground. Wire diameter ends 1.00mm and over are squared and ground. Manufactured with a right hand helix
Outside Diameter = 2.82mm
Wire Diameter = 0.32mm
Free Length = 20.6mm
Minimum Working Length = 8.5mm
Load at Minimum Working Length = 4.69N
Material = Steel Alloy
Spring Rate = 0.38N/mm
Ends = Closed (Square)/Unground