| KEY FOR ABBREVIATIONS |
| CPO |
Chrome Plated Only Steel Bars |
| DG&P |
Drawn, Ground and Polished Shafting |
| TG&P |
Turned, Ground and Polished Shafting |
| W/Te |
With Tellurium Added |
| EDT-150 |
Elevated Temperature Drawn |
|
A-4140 Modified-Rc 32 min. |
| Stressproof |
C-1144 Stress Relieved-Rc 22 min. |
| Nu-Standard |
C-1144 Stress Relieved-Rc 22 min. |