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DIN6921 Stainless Steel Zinc Black Grade 8.8 Hex Flange Bolts
High-strength German standard hex flange bolts manufactured from stainless steel with zinc-black finish for enhanced corrosion resistance and durability. The integrated flange design provides a larger bearing surface to prevent loosening, making these bolts ideal for applications requiring secure fastening and rust protection.
Product Specifications
Finish
Zinc, Plain
Material
Stainless Steel, Steel
Place of Origin
China
Standard
DIN6921, IFI-111
Size
M5-M20; 1/4"-3/4"
Grade
4.8/6.8/8.8/10.9
Delivery Time
30 days after order confirmation
Packing
Standard export packing or according to customer requirements
Applications
Outdoor Facilities & Structures: Installation of railings, light frames, and other outdoor components requiring resistance to sun and rain exposure
Automotive Component Assembly: Securing engine compartment attachments and in-vehicle equipment with vibration-resistant performance
Machinery Equipment Panels & Frames: Connecting machine guard panels and frames while balancing aesthetics, rust resistance, and secure fastening
Electrical Cabinets & Outdoor Enclosures: Mounting rails, components, and sealing panels in electrical installations without damaging surface coatings
Storage Racking & Logistics Equipment: Connectors for medium-to-light duty storage racks providing strength and durability
Marine & Chemical Equipment Maintenance: Equipment repair and component securing in humid, corrosive environment
Frequently Asked Questions
Does the product comply with DIN6921 standards? Is there a contradiction between the "stainless steel" material and the "zinc black" treatment?
The product strictly adheres to DIN6921 dimensional and mechanical performance requirements. "Stainless steel" refers to the base material, while "zinc black" is a surface coating of zinc plating with black passivation applied over the base material.
Is the strength grade "8.8" accurate for stainless steel material? What is its actual performance?
Grade 8.8 typically corresponds to carbon steel. For stainless steel bolts, this indicates that the minimum tensile strength reaches 800 MPa and yield strength reaches 640 MPa, meaning mechanical performance is equivalent to carbon steel grade 8.8.
What are the Minimum Order Quantity (MOQ) and wholesale price for the M6 specification? How about packaging and delivery lead time?
Standard MOQ is one packaging box with tiered pricing based on quantity. Delivery lead time is typically 7-15 business days, with arrangements negotiable based on urgency.
What are the advantages of this flange bolt compared to a standard bolt and washer combination?
Key advantages include: integrated design for convenient installation without separate washers, and more compact and stable structure, making it ideal for applications with vibration or requiring flat, clean appearances.
What are the main industries and environments this product is suitable for? Can you provide relevant test or certification reports?
Widely suitable for automotive assembly and environments requiring rust resistance, vibration resistance, and uniform appearance. We provide quality documents including material reports and salt spray test reports to ensure compliant procurement.
Company Details
Bronze Gleitlager
,
Bronze Sleeve Bushings
and
Graphite Plugged Bushings
from Quality China Factory
Business Type:
Manufacturer,Exporter
Year Established:
1996
Total Annual:
50000000-80000000
Employee Number:
50~100
Ecer Certification：
Verified Supplier
Founded in Jiaxing, Zhejiang Province—one of China’s central manufacturing hubs for mechanical hardware—Jiaxing Xinchuang Hardware Co., Ltd. is a professional manufacturer and exporter specializing in high-strength standard and non-standard fasteners, automotive hardware, and custo... Founded in Jiaxing, Zhejiang Province—one of China’s central manufacturing hubs for mechanical hardware—Jiaxing Xinchuang Hardware Co., Ltd. is a professional manufacturer and exporter specializing in high-strength standard and non-standard fasteners, automotive hardware, and custo...
