DINReplaced → ISO 7051Draft · single source
DIN 7983 C
Cross recessed raised countersunk head tapping screws — Form C — with tip
- Head · drive
- Raised countersunk (oval) head · Cross recess type H (Phillips)
- Thread
- Tapping screw thread (ISO 1478)
- Tolerance
- thread ISO 1478
- Property classes
- A2
- Materials
- SteelStainless
Replaced by
ISO 7051Current · Draft
Dimensions
mm · values as the standard states them| Size | P | dk | m | m | k | a | r | t | t | f | recess_no | rf | y | y |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ST2.2 | 4.3 4 – 4.3 | ≈ 2.8 | ≈ 2.4 | ≈ 1.3 | ≤ 0.8 | ≤ 0.8 | 1.17 – 1.57 | 1.1 – 1.35 | ≈ 0.7 | 1 | ≈ 3.8 | ≤ 2 | ≤ 1.6 | |
| ST2.9 | 5.5 5.2 – 5.5 | ≈ 3.4 | ≈ 3.1 | ≈ 1.7 | ≤ 1.1 | ≤ 1.1 | 1.81 – 2.21 | 1.83 – 2.08 | ≈ 0.9 | 1 | ≈ 4.6 | ≤ 2.6 | ≤ 2.1 | |
| ST3.5 | 6.8 6.44 – 6.8 | ≈ 4.6 | ≈ 4.3 | ≈ 2.1 | ≤ 1.3 | ≤ 1.4 | 1.89 – 2.39 | 1.88 – 2.34 | ≈ 1.2 | 2 | ≈ 5.4 | ≤ 3.2 | ≤ 2.5 | |
| (ST3.9) | 7.5 7.14 – 7.5 | ≈ 4.7 | ≈ 4.4 | ≈ 2.3 | ≤ 1.3 | ≤ 1.5 | 2.04 – 2.54 | 2 – 2.46 | ≈ 1.3 | 2 | ≈ 6 | ≤ 3.5 | ≤ 2.7 | |
| ST4.2 | 8.1 7.74 – 8.1 | ≈ 4.9 | ≈ 4.6 | ≈ 2.5 | ≤ 1.4 | ≤ 1.6 | 2.24 – 2.74 | 2.26 – 2.72 | ≈ 1.4 | 2 | ≈ 6.6 | ≤ 3.7 | ≤ 2.8 | |
| ST4.8 | 9.5 9.14 – 9.5 | ≈ 5.4 | ≈ 5.1 | ≈ 3 | ≤ 1.6 | ≤ 1.9 | 2.7 – 3.2 | 2.69 – 3.15 | ≈ 1.5 | 2 | ≈ 8.2 | ≤ 4.3 | ≤ 3.2 | |
| ST5.5 | 10.8 10.37 – 10.8 | ≈ 7 | ≈ 6.6 | ≈ 3.4 | ≤ 1.8 | ≤ 2.1 | 3.02 – 3.53 | 2.92 – 3.38 | ≈ 1.7 | 3 | ≈ 9.4 | ≤ 5 | ≤ 3.6 | |
| ST6.3 | 12.4 11.97 – 12.4 | ≈ 7.4 | ≈ 7.1 | ≈ 3.8 | ≤ 1.8 | ≤ 2.4 | 3.46 – 3.96 | 3.4 – 3.86 | ≈ 2 | 3 | ≈ 11.1 | ≤ 6 | ≤ 3.6 |
Ranges read min – max; ≤ / ≥ where the standard gives one limit, ≈ for approximate values. Sizes in (brackets) are non-preferred. Select a row for its size sheet.
Length tolerances
6.55.7 – 7.3
9.58.7 – 10.3
1312.2 – 13.8
1615.2 – 16.8
1918.2 – 19.8
2221.2 – 22.8
2524.2 – 25.8
3230.7 – 33.3
3836.7 – 39.3