High Quality Countersunk Construction Expansion Bolt
Product Details
Advantages:
1. **Wide Range of Products**: We offer a comprehensive selection of stainless steel hardware to meet all your needs.
2. **Excellent Service**: We prioritize honest and sincere customer relationships as our top mission.
3. **Superior Quality**: Our strict quality control ensures reliable performance and a strong market reputation.
4. **OEM Support**: Custom production based on your drawings or samples is available.
5. **Fast Delivery**: We maintain large stock for quick delivery—3 days for stock items, 7–15 days for custom orders.
6. **Low MOQ**: Flexible minimum order quantities to suit your business requirements.
Sample Charges:
1. Sample charge: Varies depending on your request | Sampling time: 5–7 days
2. Free sample for existing molds | Sampling time: 3 days
Screw Knowledge
1. Drilling
Bi-metal screws can penetrate copper plates directly using a tapping machine. The length of the alloy steel drilling head can be customized according to your needs.
2. Tapping
After special heat treatment, the tapping thread lines in the alloy steel are more compatible with new patterns when penetrating iron or aluminum boards.
3. Locking
The A2 or A4 stainless steel series strengthens the thread lines through cold forging during the entire process. This maintains excellent corrosion resistance without heat treatment. It allows smooth screwing into alveolar fasteners, ensuring a secure and tight connection that provides outstanding pull-out resistance and weatherproof performance.
| Standard | DIN/ANSI/JIS/ISO |
| Material | SS304, SS316 |
| Diameter | M6~M8 |
| Head Shapes | Countersunk Head |
| Screw Thread | Coarse Thread |
| Screw Tip | Flat Point |
| Finish | A2, A4 |
| Features | Excellent Corrosion Resistance |
| Grade | A2, A4 |
| Certification | ISO9001:2008, SGS, RoHS, Bureau Veritas |
| OEM service is available upon request. | |
Advantages:
1. **Wide Range of Products**: We offer a comprehensive selection of stainless steel hardware to meet all your needs.
2. **Excellent Service**: We prioritize honest and sincere customer relationships as our top mission.
3. **Superior Quality**: Our strict quality control ensures reliable performance and a strong market reputation.
4. **OEM Support**: Custom production based on your drawings or samples is available.
5. **Fast Delivery**: We maintain large stock for quick delivery—3 days for stock items, 7–15 days for custom orders.
6. **Low MOQ**: Flexible minimum order quantities to suit your business requirements.
Sample Charges:
1. Sample charge: Varies depending on your request | Sampling time: 5–7 days
2. Free sample for existing molds | Sampling time: 3 days
Screw Knowledge
1. Drilling
Bi-metal screws can penetrate copper plates directly using a tapping machine. The length of the alloy steel drilling head can be customized according to your needs.
2. Tapping
After special heat treatment, the tapping thread lines in the alloy steel are more compatible with new patterns when penetrating iron or aluminum boards.
3. Locking
The A2 or A4 stainless steel series strengthens the thread lines through cold forging during the entire process. This maintains excellent corrosion resistance without heat treatment. It allows smooth screwing into alveolar fasteners, ensuring a secure and tight connection that provides outstanding pull-out resistance and weatherproof performance.
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