
| Size | Class | Code | Chamfer | L (mm) | ℓ (mm) | ℓn (mm) | ℓs (mm) | Ds (mm) | K (mm) | ℓk (mm) | No. of flutes | Type | Stock |
| 1/2-13UNC | P3 | SPRU08RL15 SPRU08RL20 | 2.5P | 150 200 | 26 | - | 60 | 10.5 | 8 | 11 | 3 | 2 | △ |
| 1/2-20UNF | P2 | SPQU08NL15 | 2.5P | 150 | 26 | - | 60 | 10.5 | 8 | 11 | 3 | 2 | △ |
| 5/8-11UNC | P3 | SPRU10UL15 SPRU10UL20 | 2.5P | 150 200 | 26 | - | 60 | 12.5 | 10 | 13 | 3 | 2 | △ |
| 5/8-18UNF | P2 | SPQU10OL15 | 2.5P | 150 | 26 | - | 60 | 12.5 | 10 | 13 | 3 | 2 | △ |
| 3/4-10UNC | P3 | SPRU12VL15 SPRU12VL20 | 2.5P | 150 200 | 33 | - | 70 | 15 | 12 | 15 | 4 | 3 | △ |
| 3/4-16UNF | P3 | SPRU12PL15 | 2.5P | 150 | 33 | - | 70 | 15 | 12 | 15 | 4 | 3 | △ |
| 7/8-9UNC | P3 | SPRU14WL15 SPRU14WL20 | 2.5P | 150 200 | 33 | - | 70 | 17 | 13 | 16 | 4 | 3 | △ |
| 1 -8UNC | P3 | SPRU16XL15 SPRU16XL20 | 2.5P | 150 200 | 39 | - | 80 | 19 | 15 | 18 | 4 | 3 | △ |
| For Whitworth Thr | eads | ||||||||||||
| Size | Class | Code | Chamfer | L (mm) | ℓ (mm) | ℓn (mm) | ℓs (mm) | Ds (mm) | K (mm) | ℓk (mm) | No. of flutes | Type | Stock |
| 1/4W20 | P2 | SPQW04NL10 SPQW04NL15 | 2.5P | 100 150 | 15 | 26 | 40 | 6 | 4.5 | 7 | 3 | 1 | △ |
| 5/16W18 | P2 | SPQW05OL10 SPQW05OL15 | 2.5P | 100 150 | 19 | - | 50 | 6.2 | 5 | 8 | 3 | 2 | △ |
| 3/8W16 | P2 | SPQW06PL10 SPQW06PL15 SPQW06PL20 | 2.5P | 100 150 200 | 23 | - | 50 | 7 | 5.5 | 8 | 3 | 2 | △ |
| 7/16W14 | P3 | SPRW07QL15 | 2.5P | 150 | 26 | - | 50 | 8.5 | 6.5 | 9 | 3 | 2 | △ |
| 1/2W12 | P3 | SPRW08SL15 SPRW08SL20 | 2.5P | 150 200 | 26 | - | 60 | 10.5 | 8 | 11 | 3 | 2 | △ |
| 5/8W11 | P3 | SPRW10UL15 SPRW10UL20 | 2.5P | 150 200 | 26 | - | 60 | 12.5 | 10 | 13 | 3 | 2 | △ |
| 3/4W10 | P3 | SPRW12VL15 SPRW12VL20 | 2.5P | 150 200 | 33 | - | 70 | 15 | 12 | 15 | 4 | 3 | △ |
| 7/8W9 | P3 | SPRW14WL15 SPRW14WL20 | 2.5P | 150 200 | 33 | - | 70 | 17 | 13 | 16 | 4 | 3 | △ |
| 1 W8 | P3 | SPRW16XL15 SPRW16XL20 | 2.5P | 150 200 | 39 | - | 80 | 19 | 15 | 18 | 4 | 3 | △ |