Hebei Kappa Metal Products Co., Ltd. is one of the most reliable manufacturers and suppliers of high tensile carbon steel blue white zinc hex bolt din933 din931 in China. Welcome to buy bulk high quality high tensile carbon steel blue white zinc hex bolt din933 din931 made in China here from our factory. If you have any enquiry about cooperation, please feel free to email us.
Reliable Strength: Grade 8.8
- Material: Medium steel .
- Heat Treatment: Quenched and tempered to achieve Grade 8.8 mechanical properties.
Performance Data:
- Tensile Strength: Min. 800 MPa (116,000 psi)
- Yield Strength: Min. 640 MPa (92,800 psi)
- Hardness: 22 – 32 HRC
Application: General machinery, automotive fastening, structural steel, construction equipment, and industrial assembly.
Surface Treatment: Blue-White Zinc Plating
Dimensional Standards: DIN7991
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Item |
Countersunk Hex Head Bolts/CSK Head |
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Standard |
DIN7991 |
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Material |
Stainless Steel/A2/A4/18-8/Carbon Steel |
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Finish/Surface treatment |
Plain/Galvanized/Zinc Plated/HDG/Black Oxide |
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Size |
Diameter: M4-M45, Length: 19-270mm |
|
Thread |
UNC/UNF |
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Thread pitch |
0.8mm/1.5mm/2mm |
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Measuring |
Inch/Metric |
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Trade terms |
EXW/FCA/FOB/CIF/DAP/DDP |
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Packaging style |
Small boxes+cartons+pallets Small bags+cartons+pallets Bulk +cartons+pallets Bulk +bags+pallets |
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Customized |
Fasteners, Logo, Head mark, and packaging |
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Logistic |
By air/by sea/by truck |
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After-sales service |
24-hour |
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Quality |
High quality and Guarantee the service |
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Payment terms |
30% T/T as deposit,70%balance before delivery |
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Payment methods |
Bank account/Ali pay Qr code/Wechat Qr code/Western Union.... |
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Original |
Handan city Hebei province China |
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Note |
For exact price, you'd better provide a picture of the product, and include some details, such as size, material, grade/class, finish/surface treatment, packaging requirement, trade terms, payment methods and so on. |
FAQ
Q: Can this be used outdoors?
A: Moderate – better for sheltered/dry outdoor. For constant rain/wet, recommend yellow zinc or HDG.
Q: Is it hexavalent or trivalent?
A: We can provide both – please confirm your RoHS requirement.
Q: What is the salt spray hours?
A: Typically 72–120 hours (depending on plating thickness). Can be extended with additional sealer.
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