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| Customization: | Available |
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| Material: | Carbon Steel |
| Shape of Head: | Round |
| Shipping Cost: | Contact the supplier about freight and estimated delivery time. |
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| Carbon Steel Pan Head Cross Self Drilling Tapping Screw | |
| Material: | Carbon Steel, Stainless Steel, Brass etc. |
| Standards: | DIN, GB/T, ISO, JIS, etc. |
| Size: | ST3.5, ST3.9, ST4.2, ST4.8, ST5.5, ST6.3 |
| Class: | HV 420-530, HRC 41-50 |
| Finish: | Plain, Black, Zinc, Yellow Zinc, HDG, Dacromet, etc. |
| Screw Driver: | Cross |
| Screw Thread d |
ST2.2 | ST2.9 | ST3.5 | (ST3.9) | ST4.2 | ST4.8 | ST5.5 | ST6.3 | |||
| P | Pitch | 0.8 | 1.1 | 1.3 | 1.3 | 1.4 | 1.6 | 1.8 | 1.8 | ||
| a | max | 0.8 | 1.1 | 1.3 | 1.3 | 1.4 | 1.6 | 1.8 | 1.8 | ||
| dk | max=nominal size | 4.2 | 5.6 | 6.9 | 7.5 | 8.2 | 9.5 | 10.8 | 12.5 | ||
| min | 3.9 | 5.3 | 6.54 | 7.14 | 7.84 | 9.14 | 10.37 | 12.07 | |||
| k | max=nominal size | 1.8 | 2.2 | 2.6 | 2.8 | 3.05 | 3.55 | 3.95 | 4.55 | ||
| min | 1.55 | 1.95 | 2.35 | 2.55 | 2.75 | 3.25 | 3.65 | 4.25 | |||
| y | max | Type C | 2 | 2.6 | 3.2 | 3.5 | 3.7 | 4.3 | 5 | 6 | |
| Type F | 1.6 | 2.1 | 2.5 | 2.7 | 2.8 | 3.2 | 3.6 | 3.6 | |||
| Socket No. | 1 | 1 | 2 | 2 | 2 | 2 | 3 | 3 | |||
| M1 | ≈ | 2.6 | 3 | 4.2 | 4.4 | 4.6 | 5 | 6.5 | 7.1 | ||
| M2 | ≈ | 2.4 | 2.9 | 3.9 | 4.1 | 4.3 | 4.7 | 6.2 | 6.7 | ||
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| Q1: What thread standards do you follow? |
| A1: Our screws comply with DIN, ISO, ANSI, and JIS standards, and can also be customized according to customer drawings. |
| Q2: How do you pack the screws for export? |
| A2: Standard packing includes bulk cartons with inner boxes or small polybags, placed on pallets for container shipping. Custom boxes or barcoded packaging are available. |
| Q3: What thread types do you supply? |
| A3: We offer fine thread, coarse thread, and special thread profiles optimized for sheet metal, steel structures, and roofing applications. |
| Q4: How do you control product quality? |
| A4: Every batch is tested for torque, hardness, thread precision, and salt spray corrosion resistance, following ISO 9001 quality system standards. |
| Q5: Do you offer OEM or customized production? |
| A5: Yes. We can produce screws according to samples, technical drawings, or specific drive/head combinations, and offer custom packaging and labeling. |
| Q6: What industries do your self-tapping screws serve? |
| A6: Our screws are widely used in automotive, electronics, construction, furniture, and machinery assembly industries. |
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