
| Overall length Thread length | Thread + Neck length | Shank length | Shank dia. | Size of square | Length of square |
| L ℓ | ℓn | ℓs | Ds | K | ℓk |
DIN GGST CH Z-PRO Straight Fluted Taps for Cast Irons with Coolant Through Hole, Blind Hole Use
| Size | Class | Code | Chamfer | L (mm) | ℓ (mm) | ℓn (mm) | ℓs (mm) | Ds (mm) | K (mm) | ℓk (mm) | No. of flutes | Coolant hole size(mm) | TYPE |
| M16 × 2 | ISO2X | 3205101114 | C(2.5P) | 110 | 26 | - | 56 | 12 | 9 | 12 | 4 | 2 | 2 |
| M16 × 2 | ISO2X | 3206101114 | E(1.5P) | 110 | 26 | - | 56 | 12 | 9 | 12 | 4 | 2 | 2 |
| M16 × 1.5 | ISO2X | 3205101116 | C(2.5P) | 100 | 21 | - | 51 | 12 | 9 | 12 | 4 | 2 | 2 |
| M16 × 1.5 | ISO2X | 3206101116 | E(1.5P) | 100 | 21 | - | 51 | 12 | 9 | 12 | 4 | 2 | 2 |
| M18 × 2.5 | ISO2X | 3205101128 | C(2.5P) | 125 | 33 | - | 64 | 14 | 11 | 14 | 4 | 2 | 2 |
| M18 × 1.5 | ISO2X | 3205101130 | C(2.5P) | 110 | 24 | - | 56 | 14 | 11 | 14 | 4 | 2 | 2 |
| M20 × 2.5 | ISO2X | 3205101141 | C(2.5P) | 140 | 33 | - | 71 | 16 | 12 | 15 | 4 | 2 | 2 |
| M20 × 1.5 | ISO2X | 3205101144 | C(2.5P) | 125 | 24 | - | 64 | 16 | 12 | 15 | 4 | 2 | 2 |