Metric Heavy Hex Head Flange Screws (SAE J1199 / ASTM F568M / F738M / F468M)
ASME B 18.2.3.9M - 2001
Display drawing:
| Screw Thread | M20 | ||
| Thread Size | M20 | ||
| D | 20 | ||
| P | 2.5 | ||
| Ds | Max | 20 | |
| Ds | Min | 19.67 | |
| S | Max | 30 | |
| S | Min | 29.16 | |
| E | Max | 34.64 | |
| E | Min | 32.66 | |
| Dc | Max | 43 | |
| C_Min | 3 | ||
| K | Max | 18.9 | |
| B | L≤125 | 46 | |
| B | 125＜L≤200 | 52 | |
| B | L＞200 | 65 | |