QJ 397-1978
Countersinking with taper shank angle (ψ=60°, 90°, 120°) (English Version)
- Standard No.
- QJ 397-1978
- Language
- Chinese, Available in English version
- Release Date
- 1978
- Published By
- Professional Standard - Aerospace
- Latest
- QJ 397-1978
QJ 397-1978 history
- 1978 QJ 397-1978 Countersinking with taper shank angle (ψ=60°, 90°, 120°)
