DIN 7982 vs ISO 7050 vs GB/T 846
Phillips Countersunk Self-Tapping Screw
- Interchangeable
- Not exactly. Same thread, but the head height differs at 6 sizes (ST4.8: 3 mm in DIN 7982, 2.8 mm in ISO 7050); the head diameter differs at 6 sizes (ST4.8: 9.5 mm in DIN 7982, 9.3 mm in ISO 7050). Small details differ too. Order to the number on your drawing.
- Which to order
- ISO 7050 for new drawings. It replaced DIN 7982, and if your drawing says DIN 7982, we make DIN 7982.
- GB/T 846
- China's version of ISO 7050, with the same dimensions.
- Sizes
- ST2.2 to ST6.3 in all three. DIN 7982 also has ST3.9.
| Size | aThread Runout | dkHead Diameter | dkHead Diameter | kNominal Head Height | rRadius | Recess Number | mType H Recess Width (ref.) | Type H Penetration (max) (mm) | Type H Penetration (min) (mm) | mType Z / Socket Width (ref.) | Type Z Penetration (max) (mm) | Type Z Penetration (min) (mm) | ||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| DIN 7982 | ISO 7050 | GB/T 846 | DIN 7982 | ISO 7050 | GB/T 846 | DIN 7982 | ISO 7050 | GB/T 846 | DIN 7982 | ISO 7050 | GB/T 846 | DIN 7982 | ISO 7050 | GB/T 846 | DIN 7982 | ISO 7050 | GB/T 846 | DIN 7982 | ISO 7050 | GB/T 846 | DIN 7982 | ISO 7050 | GB/T 846 | DIN 7982 | ISO 7050 | GB/T 846 | DIN 7982 | ISO 7050 | GB/T 846 | DIN 7982 | ISO 7050 | GB/T 846 | DIN 7982 | ISO 7050 | GB/T 846 | |
| ST2.2 | 0.8 | 1.6 | 1.6 | 4.3 | 3.8 | 3.8 | 4 | 3.5 | 3.5 | 1.3 | 1.1 | 1.1 | 0.8same | 1 | 0 | 0 | 2.5 | 1.9 | 1.9 | 1.32 | 1.2 | 1.2 | 1.02 | 0.9 | 0.9 | 2.4 | 2 | 2 | 1.35 | 1.2 | 1.2 | 1.1 | 0.95 | 0.95 | ||
| ST2.9 | 1.1 | 2.2 | 2.2 | 5.5same | 5.2same | 1.7same | 1.1 | 1.2 | 1.2 | 1same | 3 | 3.2 | 3.2 | 1.7 | 2.1 | 2.1 | 1.4 | 1.7 | 1.7 | 2.8 | 3 | 3 | 1.73 | 2.01 | 2.01 | 1.48 | 1.76 | 1.76 | ||||||||
| ST3.5 | 1.3 | 2.6 | 2.6 | 6.8 | 7.3 | 7.3 | 6.44 | 6.9 | 6.9 | 2.1 | 2.35 | 2.35 | 1.4same | 2same | 4.2 | 4.4 | 4.4 | 2.12 | 2.4 | 2.4 | 1.62 | 1.9 | 1.9 | 4 | 4.1 | 4.1 | 2.06 | 2.2 | 2.2 | 1.6 | 1.75 | 1.75 | ||||
| ST4.2 | 1.4 | 2.8 | 2.8 | 8.1 | 8.4 | 8.4 | 7.74 | 8 | 8 | 2.5 | 2.6 | 2.6 | 1.6same | 2same | 4.7 | 4.6 | 4.6 | 2.62 | 2.6 | 2.6 | 2.11 | 2.1 | 2.1 | 4.4same | 2.51same | 2.05 | 2.06 | 2.06 | ||||||||
| ST4.8 | 1.6 | 3.2 | 3.2 | 9.5 | 9.3 | 9.3 | 9.14 | 8.9 | 8.9 | 3 | 2.8 | 2.8 | 1.9 | 2 | 2 | 2same | 5.1 | 5.2 | 5.2 | 3.1 | 3.2 | 3.2 | 2.59 | 2.7 | 2.7 | 5 | 4.9 | 4.9 | 3.1 | 3.05 | 3.05 | 2.64 | 2.6 | 2.6 | ||
| ST5.5 | 1.8 | 3.6 | 3.6 | 10.8 | 10.3 | 10.3 | 10.37 | 9.9 | 9.9 | 3.4 | 3 | 3 | 2.1 | 2.2 | 2.2 | 3same | 6.8 | 6.6 | 6.6 | 3.53 | 3.3 | 3.3 | 2.95 | 2.8 | 2.8 | 6.3same | 3.18same | 2.72 | 2.73 | 2.73 | ||||||
| ST6.3 | 1.8 | 3.6 | 3.6 | 12.4 | 11.3 | 11.3 | 11.97 | 10.9 | 10.9 | 3.8 | 3.15 | 3.15 | 2.4same | 3same | 7.1 | 6.8 | 6.8 | 3.91 | 3.5 | 3.5 | 3.33 | 3 | 3 | 7 | 6.6 | 6.6 | 3.84 | 3.45 | 3.45 | 3.38 | 3 | 3 | ||||