EXTENSION SPRINGS - SPECIFICATION FORM

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1. LENGTH INSIDE ENDS
    a.  in. max,      in. min. or
    b.  in. +/-       in. or
    c. approx. in.
2. OUTSIDE DIAMETER
    a. in. max. or
    b. in. +/-  in.
3.  INSIDE DIAMETER
    a. in. min. or
    b. in. +/-  in.
4. Load lb. +/-  lb. @  in.
    Load  lb. +/-  lb. @  in.
    Rate lb. per in +/-  lb. per in.
    between in. and in.
5. Maximum extended length (inside ends) without set in.
6. Relative loop position, ° max. separation of loop planes.
7. Direction of helix 
8. Type of ends
9. Wire diameter in.
10. Mean coil diameter in.
11. Number of active coils
12. Body length in.
13. Initial tension lbs.
14. Type of material
15. Finish
16.  Frequency of extension, cycles/sec,
       and working range, in. to in. of length
17. Operating temp. º F

18. End use or application

     

19. Other