Calculate the exact weight of your high-torque sheet metal fasteners instantly. Our Hex Head Self Tapping Screw Weight Calculator is designed specifically for six-sided drive screws that cut their own threads (DIN 7976 / ISO 1479 standards).
Whether for heavy-duty HVAC installations, metal roofing, or thick sheet metal fabrication, precision matters. The hex head allows for maximum torque transfer with zero risk of tool cam-out, while the self-tapping thread eliminates the need for pre-tapped holes. Get accurate weight data for your bulk orders in seconds.
Supported Size Range:
- ✔ Diameters: ST2.9, ST3.5, ST4.2, ST4.8, ST5.5, ST6.3, up to robust ST8.
- ✔ Lengths: Ranging from short 6.5mm screws to longer 150mm heavy-duty fasteners.
- ✔ Key Feature: Hex Drive (Delivers superior power transmission for driving into tougher materials using standard sockets or wrenches).
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Hex Head Self Tapping Screw Weight Chart (Stainless Steel 304, g/pc)
| Spec \ Length(mm) | 6.5 | 9.5 | 13 | 16 | 19 | 25 | 32 | 38 | 50 |
|---|---|---|---|---|---|---|---|---|---|
| ST2.9 | 0.41 | 0.49 | 0.59 | 0.68 | 0.77 | 0.94 | 1.1 | 1.3 | — |
| ST3.5 | — | 0.89 | 1.1 | 1.2 | 1.3 | 1.6 | 1.9 | 2.2 | 2.8 |
| ST3.9 | — | 1.2 | 1.4 | 1.5 | 1.7 | 2.0 | 2.4 | 2.8 | 3.4 |
| ST4.2 | — | 1.2 | 1.4 | 1.6 | 1.8 | 2.1 | 2.5 | 2.9 | 3.6 |
| ST4.8 | — | — | 1.9 | 2.2 | 2.4 | 3.0 | 3.6 | 4.1 | 5.1 |
| ST5.5 | — | — | 2.6 | 3.0 | 3.3 | 4.0 | 4.8 | 5.5 | 6.9 |
| ST6.3 | — | — | — | 4.6 | 5.1 | 6.0 | 7.1 | 8.1 | 10.0 |
| ST8 | — | — | — | — | 9.5 | 11.1 | 12.9 | 14.4 | 17.6 |
Note: Weights shown are for Stainless Steel 304. For other materials, multiply by the density ratio. "—" indicates length not available for this specification.
