ISO 7050 DIN 7982 Carbon Steel Screw Black Phillips Drywall Screw Bugle Head Cross Countersunk Tapping Self-Tapping Screw
| Carbon Steel Cross Countersunk Self-tapping Screw |
| Material: |
Carbon Steel, Stainless Steel, Brass etc. |
| Standards: |
DIN 7982, ISO 7050, ASME B 18.6.4, etc. |
| Size: |
ST2.2, ST2.9, ST3.5, ST4.2, ST4.8, ST5.5, ST6.3, ST8.0, ST9.5 |
| Class: |
Gr4.8, Gr8.8, A2-70, A4-80 |
| Finish: |
Plain, Black, Zinc, Yellow Zinc, HDG, Dacromet, etc. |
| Screw Driver: |
Cross |
| Thread Size |
| ST2.2 |
ST2.9 |
ST3.5 |
ST4.2 |
ST4.8 |
ST5.5 |
ST6.3 |
ST8 |
ST9.5 |
|
| P |
Pitch |
| a |
max |
| dk |
max |
| min |
| k |
max |
| Socket No. |
| M1 |
Cross recess, Type H |
| M2 |
Cross recess, Type Z |
| Penetration depth |
Cross recess, Type H |
max |
| min |
| Cross recess, Type Z |
max |
| min |
| y |
Ref. |
Form C |
| Form F |
| Form R |
|
| 0.8 |
1.1 |
1.3 |
1.4 |
1.6 |
1.8 |
1.8 |
2.1 |
2.1 |
| 1.6 |
2.2 |
2.6 |
2.8 |
3.2 |
3.6 |
3.6 |
4.2 |
4.2 |
| 3.8 |
5.5 |
7.3 |
8.4 |
9.3 |
10.3 |
11.3 |
15.8 |
18.3 |
| 3.5 |
5.2 |
6.9 |
8 |
8.9 |
9.9 |
10.9 |
15.4 |
17.8 |
| 1.1 |
1.7 |
2.35 |
2.6 |
2.8 |
3 |
3.15 |
4.65 |
5.25 |
| 0 |
1 |
2 |
2 |
2 |
3 |
3 |
4 |
4 |
| 1.9 |
3.2 |
4.4 |
4.6 |
5.2 |
6.6 |
6.8 |
8.9 |
10.0 |
| 2.0 |
3.0 |
4.1 |
4.4 |
4.9 |
6.3 |
6.6 |
8.8 |
9.8 |
| 1.2 |
2.1 |
2.4 |
2.6 |
3.2 |
3.3 |
3.5 |
4.6 |
5.7 |
| 0.9 |
1.7 |
1.9 |
2.1 |
2.7 |
2.8 |
3 |
4 |
5.1 |
| 1.2 |
2.01 |
2.2 |
2.51 |
3.05 |
3.18 |
3.45 |
4.6 |
5.64 |
| 0.95 |
1.76 |
1.75 |
2.06 |
2.6 |
2.73 |
3 |
4.15 |
5.19 |
| 2.0 |
2.6 |
3.2 |
3.7 |
4.3 |
5.0 |
6.0 |
7.5 |
8.0 |
| 1.6 |
2.1 |
2.5 |
2.8 |
3.2 |
3.6 |
3.6 |
4.2 |
4.2 |
| / |
/ |
2.7 |
3.2 |
3.6 |
4.3 |
5.0 |
6.3 |
/ |
|
| 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: Do you provide samples before mass production? |
| A3: Yes, we offer free or low-cost samples for quality and dimension confirmation prior to order. |
| 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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