Black Zinc Plated Hex Flange Bolt 8.8 Grade M8-M12 DIN 6921 for Engine Brackets
Price:
$0.05/pieces 1000-49999 pieces
MOQ:
1000 pieces
Delivery Time:
7~15 working day
Brand:
FINEX
Product Description
Black Zinc Plated Hex Flange Bolt – 8.8 Grade M8-M12 DIN 6921 for Engine Brackets
Product Overview
Our Black Zinc Plated Hex Flange Bolt (DIN 6921) is engineered for demanding automotive and industrial applications, offering superior strength, corrosion resistance, and vibration-proof performance. Designed with an integrated flange for even load distribution and a Grade 8.8 carbon steel core, this bolt is ideal for securing engine brackets, mounts, and other critical assemblies exposed to extreme mechanical stress and harsh environments.
Key Features
✅ Grade 8.8 Carbon Steel
- High Tensile Strength: 800 MPa tensile strength and 640 MPa yield strength for heavy-duty loads.
- Durability: Withstands shocks, vibrations, and thermal cycling in engine compartments.
✅ Hex Flange Design (DIN 6921)
- Integrated Washer Function: Eliminates the need for separate washers, reducing assembly time and hardware costs.
- Anti-Loosening: Flange distributes clamping force evenly, resisting rotation under dynamic loads.
✅ Black Zinc Plating
- Corrosion Resistance: Trivalent zinc-nickel coating protects against rust, humidity, and automotive fluids (oil, coolant).
- Sleek Finish: Matte black appearance for OEM-quality aesthetics.
✅ Automotive Compliance
- IATF 16949 Certified: Meets automotive industry quality standards for reliability and traceability.
- DIN 6921 Compliant: Precision-engineered dimensions for seamless compatibility.
Specification
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More Detail Informations
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Available Material
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1.Stainless Steel: SS303, SS304, SS316, SS410, SS420;
2.Carbon steel: C1006,C1010,C1018,C1022,C1035K,C1045; 3.Brass: C3602,C3604,Hpb59,Hpb62,Hpb65,Hpb58,Hpb70 ; 4.Aluminum: Al6061, Al6063 etc or as your requirements |
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Head type
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CSK Head,Pan Head,Truss Head,Hexagon Head,Round Head,Oval Head,Button Head,Cap Head,Cheese Head,etc.
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Hardness
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Carbon Steel:HRC:28~35 ,HV450~700
Alloy Steel:HRC:32~39(grade10.9) HRC:39~44(grade12.9) |
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Finish
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Zinc plated, Nickel plated, Bronze, Copper,Phosphate, Oxidation black, Passivation, Tin, Dacromet, Gold, Chrome, Silver,
Phosphorization,Zinc-nickel alloy plated etc. |
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Sample Available
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The sample is free of charge if we have the existing tooling,you only need to pay for the freight cost
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Delivery time
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Samples time 3-5 working days, Lead time 20-25 working days
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Pricing Term
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EXW Dongguan(FCA),FOB, CIF, CNF, DDU,etc.
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Packing
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Bulk in PE bag or Small boxes.then in carton .pallet
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Payment term
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TT (30% in advance as deposit, balance before delivery) , L/C, Western Union,PayPal etc
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Management system
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ISO9001:2015
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Certificate
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ISO,ROHS
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Why Choose Us
Why Choose Us?
✅ OEM/ODM Support: Full custom packaging, branding, and documentation.
✅ Quality Assurance: ISO 9001-certified with full material traceability and testing (salt-spray, torque, tensile).
✅ Flexible MOQs: Prototype batches to large-scale production.
✅ Fast Turnaround: 10–15 days for standard orders; expedited options available.
Company Profile
FAQ
Q1: What is your main products and material supply?
A1: Our main products are Electronic screws,Sems screws,Tapping screws,Chicago screws,Shoulder screws etc. Special Non-standard studs,Turning parts and High-end precision complex CNC Machining parts etc.
A2: Carbon Steel, Alloy Steel, Aluminum alloy,Stainless Steel, Brass, Copper ,Titanium alloy or according to your requirement.
Q4: What's your packing?What to do in case of damaged goods during transport?
A1: Our Normal packing is bulking in Cartons, less than 20 kgs/carton, 48 cartons / pallet. We also can pack products according to your requirement.
A2: To avoid any subsequent trouble regarding quality issue, we suggest you check the goods once you receive them. If there is any transport damaged or quality issue, don't forget take the detail pictures and contact us as soon as possible, we will properly handle it to make sure your loss to reduce to the smallest.
A1: Our main products are Electronic screws,Sems screws,Tapping screws,Chicago screws,Shoulder screws etc. Special Non-standard studs,Turning parts and High-end precision complex CNC Machining parts etc.
A2: Carbon Steel, Alloy Steel, Aluminum alloy,Stainless Steel, Brass, Copper ,Titanium alloy or according to your requirement.
Q2: When can I get the price?
A: We usually offer you a quotation within 12 hours, and the special offer is not more than 24 hours.Any urgent cases, please contact us directly by phone or send email to us.
A: We usually offer you a quotation within 12 hours, and the special offer is not more than 24 hours.Any urgent cases, please contact us directly by phone or send email to us.
Q3: What about the transportation and delivery date?
A: If the weight of goods more than 80kg,Normally we use shipment to transprot the orders. It is about 20-30days . If the weight of goods less than 80kg,or there are urgent, we can send the goods via air express,It is 3~5 days.
A: If the weight of goods more than 80kg,Normally we use shipment to transprot the orders. It is about 20-30days . If the weight of goods less than 80kg,or there are urgent, we can send the goods via air express,It is 3~5 days.
Q4: What's your packing?What to do in case of damaged goods during transport?
A1: Our Normal packing is bulking in Cartons, less than 20 kgs/carton, 48 cartons / pallet. We also can pack products according to your requirement.
A2: To avoid any subsequent trouble regarding quality issue, we suggest you check the goods once you receive them. If there is any transport damaged or quality issue, don't forget take the detail pictures and contact us as soon as possible, we will properly handle it to make sure your loss to reduce to the smallest.
Q5: Can I get discounts?
A: Yes, for big order, frequent customers, we give reasonable discounts.
A: Yes, for big order, frequent customers, we give reasonable discounts.
Q6: Do you have enough capacity?
A: Our production equipment is a new imported equipment. We have a group of skilled workers who have been working for more than 10 years. Their production experience is very rich and their skills are very skilled. The screws can be 30 million pcs/month. We have sufficient funds to ensure the normal operation of the factory.
A: Our production equipment is a new imported equipment. We have a group of skilled workers who have been working for more than 10 years. Their production experience is very rich and their skills are very skilled. The screws can be 30 million pcs/month. We have sufficient funds to ensure the normal operation of the factory.
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Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.
Company
Finexpress Precision Manufacturing (dongguan) Co., Ltd
Location
Building 2, No. 129 Xinmalian Xinma Road, Dalang Town, Dongguan, Guangdong, China
Contact Person
Irene chen