SPEC extension springs have a wide application for experimental,
development, prototype and maintenance work and have been specified
and designed to high precision standards.
The extension springs are available in 2 types: Extension springs
A (European metric measures) and Extension spring B (American
Music wire to DIN 17223, Class C. No.1, 1200. BS5216 ND3 of
HD3-AMS 5112.Stainless steel wire to DIN 17224, No.1, 4310 BS 2056
EN58A. Class 302 AMS 5688.
German loops closed. End positions will vary.
Normal wire oiled. Shot-peened and plated finishes on request.
Allow additional time for special finishes.
To determine load at any working length use (rate x deflection) +
1 lb = 4.448 Newtons1 Newton = 0.225 lb.
Initial tension is for reference only and may vary.