
| Size | Class | Code | Chamfer | Basic major dia | L (mm) | ℓ (mm) | ℓn (mm) | ℓs (mm) | Ds (mm) | K (mm) | ℓk (mm) | No. of flutes | Type | Stock |
| STI M12×1.75 | 1b | TW012P1LEBA | 1.5P | (mm) 14.273 | 95 | 26 | - | 48 | 12.5 | 10 | 13 | l 4 | 3 | ◎ |
| STI M12×1.5 | 1b | TW012O1LEB5 TW012O1LEBA | 5P 1.5P | 13.948 | 88 | 26 | - | 45 | 10.5 | 8 | 11 | 4 | 3 | △ |
| STI M12×1.25 | 1b | TW012N1LEB5 TW012N1LEBA | 5P 1.5P | 13.624 | 88 | 26 | - | 45 | 10.5 | 8 | 11 | 4 | 3 | △ |
| STI M14×2 | 1b | TW014Q1LEB5 TW014Q1LEBA | 5P 1.5P | 16.598 | 100 | 33 | - | 51 | 14 | 11 | 14 | 4 | 3 | △ |
| STI M14×1.5 | 1b | TW014O1LEB5 TW014O1LEBA | 5P 1.5P | 15.948 | 95 | 26 | - | 48 | 12.5 | 10 | 13 | 4 | 3 | △ |
| STI M16×2 | 1b | TW016Q1LEB5 TW016Q1LEBA | 5P 1.5P | 18.598 | 105 | 33 | - | 50 | 15 | 12 | 15 | 4 | 4 | ○ |
| STI M16×1.5 | 1b | TW016O1LEB5 TW016O1LEBA | 5P 1.5P | 17.948 | 100 | 33 | - | 51 | 14 | 11 | 14 | 4 | 3 | △ |
| STI M18×2.5 | 1b | TW018R1LEB5 TW018R1LEBA | 5P 1.5P | 21.248 | 115 | 33 | - | 55 | 17 | 13 | 16 | 4 | 4 | △ |
| STI M18×1.5 | 1b | TW018O1LEB5 TW018O1LEBA | 5P 1.5P | 19.948 | 105 | 33 | - | 50 | 15 | 12 | 15 | 4 | 4 | △ |
| STI M20×2.5 | 1b | TW020R1LEB5 TW020R1LEBA | 5P 1.5P | 23.248 | 120 | 39 | - | 55 | 19 | 15 | 18 | 4 | 4 | ○ |
| STI M20×1.5 | 1b | TW020O1LEB5 TW020O1LEBA | 5P 1.5P | 21.948 | 115 | 33 | - | 55 | 17 | 13 | 16 | 4 | 4 | △ |
| STI M22×2.5 | 1b | TW022R1LEB5 TW022R1LEBA | 5P 1.5P | 25.248 | 125 | 39 | - | 58 | 19 | 15 | 18 | 4 | 4 | △ |
| STI M22×1.5 | 1b | TW022O1LEB5 TW022O1LEBA | 5P 1.5P | 23.948 | 120 | 39 | - | 55 | 19 | 15 | 18 | 4 | 4 | △ |
| STI M24×3 | 1b | TW024S1LEB5 TW024S1LEBA | 5P 1.5P | 27.897 | 135 | 46 | - | 62 | 23 | 17 | 20 | 4 | 4 | ○ |
| STI M24×1.5 | 1b | TW024O1LEB5 TW024O1LEBA | 5P 1.5P | 25.948 | 130 | 39 | - | 60 | 20 | 15 | 18 | 4 | 4 | △ |
| For Helical Coil i | Wire S i | crew Thread i | Inserts i | , for Unifie | id Thre | i ads | ||||||||
| Size | Class | Code | Chamfer | Basic major dia (mm) | L (mm) | ℓ (mm) | ℓn (mm) | ℓs (mm) | Ds (mm) | K (mm) | ℓk (mm) | No. of flutes | Type | Stock |
| STI No.4-40UNC | 1b | TWUN4H1LEB5 TWUN4H1LEBA | 5P 1.5P | 3.670 | 52 | 11 | 17 | 29 | 5 | 4 | 7 | 3 | 2 | △ |
| STI No.4-48UNF | 1b | TWUN4F1LEB5 TWUN4F1LEBA | 5P 1.5P | 3.532 | 52 | 11 | 17 | 29 | 5 | 4 | 7 | 3 | 2 | △ |
| STI No.5-40UNC | 1b | TWUN5H1LEB5 TWUN5H1LEBA | 5P 1.5P | 4.000 | 52 | 11 | 17 | 29 | 5 | 4 | 7 | 3 | 2 | △ |
| STI No.6-32UNC | 1b | TWUN6J1LEB5 TWUN6J1LEBA | 5P 1.5P | 4.536 | 60 | 13 | 22 | 33 | 5.5 | 4.5 | 7 | 3 | 2 | △ |
| STI No.6-40UNF | 1b | TWUN6H1LEB5 TWUN6H1LEBA | 5P 1.5P | 4.330 | 60 | 13 | 22 | 33 | 5.5 | 4.5 | 7 | 3 | 2 | △ |
| STI No.8-32UNC | 1b | TWUN8J1LEB5 TWUN8J1LEBA | 5P 1.5P | 5.197 | 62 | 15 | 26 | 33 | 6 | 4.5 | 7 | 4 | 2 | △ |
| STI No.8-36UNF | 1b | TWUN8I1LEB5 TWUN8I1LEBA | 5P 1.5P | 5.083 | 62 | 9.5 | 26 | 33 | 6 | 4.5 | 7 | 4 | 1 | △ |
| STI No.10-24UNC | 1b | TWUNAM1LEB5 TWUNAM1LEBA | 5P 1.5P | 6.200 | 62 | 15 | 26 | 33 | 6 | 4.5 | 7 | 4 | 2 | △ |
| STI No.10-32UNF | 1b | TWUNAJ1LEB5 TWUNAJ1LEBA | 5P 1.5P | 5.857 | 62 | 15 | 26 | 33 | 6 | 4.5 | 7 | 4 | 2 | △ |