Characteristics	A spring will compress when a load is applied. The amount of deflection will be determined by the spring rate. It is not advisable to use more than 80% of the maximum possible deflection.	An initial load must be applied before the coils will begin to open. The amount of deflection thereafter is determined by the spring rate. We recommend a safe extended length for our springs.
End Coils	Up to 0.5mm wire - closed only Over 0.5mm wire - closed & grd.	Full loops are of a similar size to the outside diameter. End positions of loops may vary.
Tolerances	British Standard BS 1726: Part 1: Grade 2	British Standard BS 1726: Part 2: Grade 2
Materials	Carbon Steel Wire / Music Wire British Standard BS 5216, Grade ND3 / Grade M4
Finish	To enhance performance, springs are stress relieved at appropriate temperatures, and stocked springs are supplied lightly oiled.