Material to DIN 17224 No.1, 4310 or BS2056 EN58A. Ends are squared and unground. Appearance: brown/bronze. Made with a right hand helix
Outside Diameter = 4.5mm
Wire Diameter = 0.5mm
Free Length = 31mm
Minimum Working Length = 14mm
Load at Minimum Working Length = 7.76N
Material = Stainless Steel
Spring Rate = 0.45N/mm
Ends = Closed (Square)/Unground