QJ 398-1978
Countersink drill with carbide insert angle (D=30~60, ψ=60°, 90°) (English Version)
- Standard No.
- QJ 398-1978
- Language
- Chinese, Available in English version
- Release Date
- 1978
- Published By
- Professional Standard - Aerospace
- Latest
- QJ 398-1978
QJ 398-1978 history
- 1978 QJ 398-1978 Countersink drill with carbide insert angle (D=30~60, ψ=60°, 90°)
