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Home Product Hexagonal flange screws M12*55 - High-Strength Hex Flange Bolts, DIN 6921 Standard, Zinc-Plated Automotive Fasteners for Heavy Machinery
Hexagonal flange screws

Hexagonal flange screws M12*55 - High-Strength Hex Flange Bolts, DIN 6921 Standard, Zinc-Plated Automotive Fasteners for Heavy Machinery

M12x55 hexagonal flange screws
Hex flange bolts M12x55
High strength M12 flange screws
Hexagonal flange screws M12*55
M12x55 hexagonal flange screws (Hex flange bolts M12x55) feature high-strength Grade 8.8 steel construction with integrated washer. Zinc-plated corrosion resistance, vibration-resistant flange design. Ideal for automotive, machinery, and structural applications requiring durable M12 flange screws.
Categories:Fasteners & Fixings
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Product Description

High strength M12 flange screws, specifically M12x55 hexagonal flange screws, feature a robust hexagonal head design with an integrated flange for secure fastening in demanding applications. These hex flange bolts M12x55 are constructed from grade 10.9 steel, offering exceptional tensile strength up to 1040 MPa and a corrosion-resistant zinc-plated finish. The flange diameter measures 24 mm with a 3 mm thickness, eliminating the need for separate washers while distributing load evenly. Designed for industrial environments like machinery assembly, automotive systems, and structural frameworks, these screws withstand temperatures from -50°C to +150°C and vibrations up to 15 G. Their self-locking flange ensures stability under dynamic stresses, though installation requires precise torque control (90-110 N·m recommended). Battery, screen, and communication interfaces are not applicable as these are purely mechanical components. The M12x55 thread length provides optimal grip for materials up to 40 mm thick, making them ideal for heavy-duty joining where shock resistance and minimal maintenance are critical.
Parameter Specification
Product Designation Hexagonal flange screws M12x55
Thread Size M12 coarse pitch (1.75 mm)
Thread Length 30 mm (minimum)
Material Grade Class 8.8 / Grade 5
Flange Diameter 24 mm
Flange Thickness 2.5 mm
Hex Size 17 mm (AF)
Proof Load 830 MPa (min)
Surface Finish Zinc-plated (5-8 μm)
Torque Capacity 94-112 Nm (dry)
Standard Compliance DIN 6921 / ISO 1665
Application Temperature -50°C to +120°C
Packaging Unit 100 pcs/box
question:Do you have a professional product selection engineering team?
answer:Yes, we have a dedicated team of product engineers specializing in market analysis and quality screening.
question:Why are the product labels removed upon receiving the goods?
answer:Labels may be removed to comply with brand regulations or shipping requirements. Please check the terms or contact support for specifics.
question:Can we apply for low-value declaration on shipments?
answer:Low-value declaration is possible for eligible shipments, subject to destination country regulations and required documentation.
question:Can the company ensure stable product supply?
answer:Yes, we maintain long-term partnerships and strict inventory management.
question:Why is there a transaction fee?
answer:The fee covers payment processing and administrative costs for secure transactions.
question:Do you have a professional product selection engineering team?
answer:Yes, we have a dedicated team of product engineers specializing in market analysis and quality screening.
question:Why are the product labels removed upon receiving the goods?
answer:Labels may be removed to comply with brand regulations or shipping requirements. Please check the terms or contact support for specifics.
question:Can we apply for low-value declaration on shipments?
answer:Low-value declaration is possible for eligible shipments, subject to destination country regulations and required documentation.
question:Can the company ensure stable product supply?
answer:Yes, we maintain long-term partnerships and strict inventory management.
question:Why is there a transaction fee?
answer:The fee covers payment processing and administrative costs for secure transactions.
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