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Home Product M10*20 Hexagonal Flange Screw - DIN 6921 High-Strength Zinc Flanged Bolt for Automotive Construction
Hexagonal flange screws

M10*20 Hexagonal Flange Screw - DIN 6921 High-Strength Zinc Flanged Bolt for Automotive Construction

Hex flange screws M10x20
DIN 6921 flange bolts
M10-20 flange head screws
Hexagonal flange screws M10*20
Hex flange screws M10x20, compliant with DIN 6921 standard for flange bolts, feature a durable hexagonal head design and integrated washer. These M10-20 flange head screws provide secure fastening in automotive, machinery, and structural applications with high-strength steel construction and corrosion-resistant zinc plating.
Categories:Fasteners & Fixings
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Product Description

Hex flange screws M10x20, compliant with DIN 6921 flange bolts standards, are hexagonal head fasteners with an integrated flange for load distribution, eliminating the need for separate washers. These M10-20 flange head screws feature a 10mm nominal diameter, 20mm shank length, and metric coarse threading, designed for high-torque applications in automotive, machinery, and structural industries. Constructed from grade 8.8 or 10.9 steel with optional zinc-plated or galvanized coatings, they operate reliably in temperatures from -20°C to 120°C. The integrated flange provides stable clamping force, reduces loosening risks, and simplifies assembly. While offering excellent vibration resistance and durability, potential drawbacks include limited corrosion resistance in untreated variants and compatibility constraints with non-metric components. Installation typically requires 45-55 Nm torque values for optimal performance in heavy-duty mechanical connections.
Parameter Specification
Product Model Hexagonal flange screws M10x20
Standard DIN 6921 flange bolts
Material Grade Carbon Steel (Grade 8.8)/Stainless Steel (A2-70)
Surface Treatment Zinc-plated/Geomet® coating/Dacromet
Mechanical Property Minimum Ultimate Tensile Strength: 800 MPa (Grade 8.8)
Nominal Diameter M10 flange head screws
Thread Length Full thread
Flange Diameter 22.5 mm ±0.3 mm
Head Height 6.8 mm ±0.2 mm
Hex Drive Size 17 mm (AF)
Thread Pitch 1.5 mm (Standard coarse thread)
Effective Length 20 mm ±0.5 mm (Under-head measurement)
Torque Value 54-60 N·m (Grade 8.8 with lubrication)
Applications Automotive components, Machinery assembly, Structural connections
question:What is the warranty?
answer:Products come with a 12-month warranty covering manufacturing defects.
question:What shipping methods are available?
answer:We support DHL, FedEx, UPS, and other major shipping carriers.
question:Do you accept payment after delivery?
answer:No, payment is required upfront or via secured terms before shipment.
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:What is the warranty?
answer:Products come with a 12-month warranty covering manufacturing defects.
question:What shipping methods are available?
answer:We support DHL, FedEx, UPS, and other major shipping carriers.
question:Do you accept payment after delivery?
answer:No, payment is required upfront or via secured terms before shipment.
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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