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Home > Bolt > China Cross flange self tapping screw Supplier, Factory
China Cross flange self tapping screw Supplier, Factory
China Cross flange self tapping screw Supplier, Factory
China Cross flange self tapping screw Supplier, Factory
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China Cross flange self tapping screw Supplier, Factory
China Cross flange self tapping screw Supplier, Factory
China Cross flange self tapping screw Supplier, Factory

China Cross flange self tapping screw Supplier, Factory

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Product Description

FOB Price US $0.5 - 9,999 / Piece
Min.Order Quantity 100 Piece/Pieces
Supply Ability 10000 Piece/Pieces per Month
Materials and Surface Treatment
Common Materials
Carbon steel: Low cost, high strength, surface requires rust prevention treatment, such as galvanizing and Dacromet.
Stainless steel (304/316): Strong corrosion resistance, suitable for humid or chemical environments.
Aluminum alloy/copper: Lightweight or conductive demand scenarios, but with lower strength.
Surface Treatment
Galvanization: Divided into electroplating (blue and white zinc, color zinc) and hot-dip galvanizing, generally rust resistant, suitable for indoor environments.
Dacromet (zinc chromium coating): No risk of hydrogen embrittlement, high temperature resistance, corrosion resistance, used in automobiles and outdoors.
Phosphating: Increases lubricity and reduces installation friction.
Nylon coating: Insulation, anti loosening, commonly used in electronic devices.
Application Fields
Automotive manufacturing: Sheet metal parts, interior panels, and wiring harness fixation must be shock resistant and anti loose.
Electronic appliances: Circuit board and shell assembly, mainly small size (M2-M4) to avoid conductive interference.
Architectural decoration: Installation of color steel plates, aluminum alloy doors and windows, and protection of flange surfaces from scratches.
Mechanical equipment: Panels and enclosures fixed to withstand vibration environments.
Specifications and Standards
Common Specifications
Nominal diameter: M2 to M12 (commonly M4-M6).
Length range: 6mm to 100mm, depending on application requirements.
Flange diameter: Usually 2-3 times the diameter of the screw (such as M5 flange surface diameter of about 10-15mm).
International Standards
National standard: GB/T 15856.4 (Pan head cross flange self tapping screws).
German standard: DIN 7500 (Technical standard for self tapping screws).
American standards: ANSI/ASME B18.6.4, SAE J78 (automotive applications).
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Frequently Asked Questions
What are the advantages of using Stainless Steel 316 for these screws?
Stainless steel 316 provides superior corrosion resistance compared to 304, making it ideal for marine or highly chemical environments.
Why is Dacromet coating preferred in automotive applications?
Dacromet offers high temperature and corrosion resistance without the risk of hydrogen embrittlement, which is critical for safety-related auto parts.
Can I get custom lengths for M4 and M6 screws?
Yes, we support a length range from 6mm to 100mm to meet specific industrial application requirements.
What does "anti-loosening" nylon coating do?
The nylon coating provides insulation and creates friction during installation to prevent the screw from loosening under vibration.
Do these screws comply with international quality standards?
Absolutely. Our products are manufactured according to DIN 7500, GB/T 15856.4, and ANSI/ASME B18.6.4 standards.
What is the typical lead time for an order of 10,000 pieces?
With a supply ability of 10,000 pieces per month, we can typically fulfill such orders within a standard production cycle.

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