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ISO 4161 Hexagon Nuts with Flange (Serrated Bearing Surface) – Manufacturer, Exporter & Supplier

We manufacture and export ISO 4161 Hexagon Nuts with Flange (Serrated Bearing Surface) conforming to exact ISO 4161 dimensional and mechanical specifications. Available in 8 / A2-70 / A4-70, our ISO 4161 hex flange nuts pass rigorous in-house testing — hardness, tensile and dimensional — before dispatch. ISO 9001:2015 certified production, EN 10204 3.1 mill test reports supplied as standard, and dedicated export documentation for 50+ destination countries.
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ISO 4161 Key Specifications

The core specification data for ISO 4161 Hexagon Nuts with Flange (Serrated Bearing Surface), at a glance.

Standard

ISO 4161

Type

Hexagon Nuts with Flange (Serrated Bearing Surface)

Size Range

M5 to M20

Thread Pitch

Coarse

Property Class / Grade

8 / A2-70 / A4-70

Head / Drive Type

Hex with Flange

About ISO 4161 Hexagon Nuts with Flange (Serrated Bearing Surface)

ISO 4161 Hexagon Nuts with Flange (Serrated Bearing Surface) are hex flange nuts produced and tested to the exact requirements of the ISO 4161 specification. Featuring a Hex with Flange configuration with Coarse thread form, they are available in property classes 8 / A2-70 / A4-70 across a size range of M5 to M20. The ISO 4161 standard governs dimensional tolerances, mechanical properties including tensile strength, proof load and hardness, as well as surface finish requirements to ensure dependable performance in Automotive and Sheet Metal applications worldwide.
Our ISO 4161 Hexagon Nuts with Flange (Serrated Bearing Surface) are cold-forged from certified bar stock, heat-treated where required, and thread-rolled to guarantee consistent fit and fatigue performance. Every batch is documented with an EN 10204 3.1 Mill Test Report covering chemical composition, mechanical test results and dimensional inspection. Available in zinc electroplated, hot-dip galvanised, Geomet, Dacromet and black oxide finishes to match corrosion-resistance requirements for Electrical Equipment, Engines and Compressors applications. As a global exporter of ISO 4161 fasteners, we consolidate orders with other standard-specification items into single shipments, backed by complete customs documentation for over 50 countries.
Technical Specifications

Raw Material

8 Alloy / Stainless Steel

Country of Origin

India

Standard Body

ISO

Corrosion Resistance

Salt-spray tested to relevant grade

Recommended Torque

Per property class / grade

Storage Conditions

Dry, corrosion-inhibited packing

ISO 4161 Dimensions & Size Chart

Precise dimensional data for every ISO 4161 Hexagon Nuts with Flange (Serrated Bearing Surface) size, cross-referenced against the standard’s key measurement points.
Size (M)s (mm)m (mm)dc (mm)
M585.011.8
M6106.014.2
M8138.018.0
M101510.021.8
M121812.026.0
M142114.029.9
M162416.032.8
M203020.040.0
Key Dimension Callouts

d

Nominal internal thread diameter of the flange nut.

m

Overall nut height from bearing face to top.

s

Width across flats for wrench engagement.

dc

Outside diameter of the integral bearing flange.

Discover More ISO Industrial Fastener Standards and Specifications

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ISO 4161 Hexagon Nuts with Flange (Serrated Bearing Surface) – Material Grades & Property Classes

ISO 4161 Hexagon Nuts with Flange (Serrated Bearing Surface) are available across multiple property classes and surface finish options to match load-bearing and corrosion-resistance requirements for Automotive, Sheet Metal and Electrical Equipment applications.
Property Classes
8 A2-70 A4-70
Surface Treatments
Zinc Electroplated Hot-Dip Galvanised (HDG) Geomet Coating Dacromet Coating Black Oxide Phosphate & Oil Plain (Self Colour) Nickel Plated

Why Choose Us for ISO 4161 Hexagon Nuts with Flange (Serrated Bearing Surface)?

Nine reasons buyers worldwide rely on us as their ISO 4161 Hexagon Nuts with Flange (Serrated Bearing Surface) manufacturer and export partner.
ISO Certified Production

Every batch of ISO 4161 Hexagon Nuts with Flange (Serrated Bearing Surface) is manufactured under an ISO 9001:2015 certified quality management system with full in-process control.

EN 10204 3.1 MTR Supplied

A mill test report covering chemical composition, tensile, hardness and dimensional inspection accompanies every ISO 4161 Hexagon Nuts with Flange (Serrated Bearing Surface) shipment.

48-hr Dispatch on Stock Items

Commonly stocked ISO 4161 Hexagon Nuts with Flange (Serrated Bearing Surface) sizes leave our warehouse within 48 hours of order confirmation, minimising your downtime.

Export to 50+ Countries

Established freight and customs partners ensure reliable delivery of ISO 4161 Hexagon Nuts with Flange (Serrated Bearing Surface) to buyers in over 50 countries worldwide.

Custom Sizes & Lengths

Non-standard ISO 4161 Hexagon Nuts with Flange (Serrated Bearing Surface) lengths, diameters and special thread pitches are produced to order to match your drawing requirements.

Competitive Factory Pricing

Direct-from-factory pricing on ISO 4161 Hexagon Nuts with Flange (Serrated Bearing Surface) with no middleman markup, offering the best value on volume and repeat orders.

In-House Metallurgical Testing

Hardness, tensile strength and dimensional checks for ISO 4161 Hexagon Nuts with Flange (Serrated Bearing Surface) are performed in our in-house laboratory before every release.

Consolidated Multi-Standard Shipping

Combine ISO 4161 Hexagon Nuts with Flange (Serrated Bearing Surface) with other standard-specification fasteners into a single container shipment to reduce freight costs.

Dedicated Export Documentation Team

Our specialist team prepares all customs, compliance and shipping paperwork for every ISO 4161 Hexagon Nuts with Flange (Serrated Bearing Surface) export order.

ISO 4161 Hexagon Nuts with Flange (Serrated Bearing Surface) – Applications & End Uses

ISO 4161 Hexagon Nuts with Flange (Serrated Bearing Surface) are widely specified across multiple industries. Select an industry below to see how our ISO 4161 hex flange nuts are applied.
ISO 4161 Hexagon Nuts with Flange (Serrated Bearing Surface) are used in automotive for critical fastening applications where dimensional accuracy and mechanical performance are essential. Grade 8 is most commonly specified for automotive environments.
In sheet metal, ISO 4161 Hexagon Nuts with Flange (Serrated Bearing Surface) are valued for consistent dimensions and reliable load-bearing capability. We supply with full test documentation to support quality audits and project inspections.
ISO 4161 Hexagon Nuts with Flange (Serrated Bearing Surface) are used in electrical equipment assemblies where precise torque control and consistent fit are critical. We supply to OEM manufacturers and contractors with custom packaging formats.
For engines applications, ISO 4161 Hexagon Nuts with Flange (Serrated Bearing Surface) are supplied with material test reports, dimensional inspection certificates and PPAP documentation where required.
ISO 4161 Hexagon Nuts with Flange (Serrated Bearing Surface) for compressors use are selected from stainless steel or coated grades to provide appropriate corrosion resistance while maintaining specified mechanical performance.
In general engineering applications, ISO 4161 Hexagon Nuts with Flange (Serrated Bearing Surface) are fastened into assemblies requiring long-term reliability. Our export-packaged ISO 4161 hex flange nuts arrive protected from transit corrosion with full documentation.

Request a Quote for ISO 4161 Hexagon Nuts with Flange (Serrated Bearing Surface)

Get pricing and lead times for your required sizes and quantities. ISO 9001 certified. EN 10204 3.1 MTR supplied. Export to 50+ countries.
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Frequently Asked Questions About ISO 4161

Common questions from buyers sourcing ISO 4161 Hexagon Nuts with Flange (Serrated Bearing Surface), covering sizes, grades, documentation and lead times.
We supply ISO 4161 Hexagon Nuts with Flange (Serrated Bearing Surface) from M5 to M20 in Coarse thread. Standard lengths are stocked; non-standard lengths are produced to order. Contact us with your exact requirements for availability confirmation.
ISO 4161 Hexagon Nuts with Flange (Serrated Bearing Surface) are supplied in 8 / A2-70 / A4-70. Carbon and alloy steel grades comply with ISO 898-1 and stainless steel grades comply with ISO 3506. ASTM grades are available for USA and Canadian export orders.
Every ISO 4161 Hexagon Nuts with Flange (Serrated Bearing Surface) order includes an EN 10204 3.1 Mill Test Report covering chemical composition, tensile strength, hardness and proof load. Third-party inspection by SGS, BV or TUV can be arranged on request.
Stocked ISO 4161 Hexagon Nuts with Flange (Serrated Bearing Surface) sizes dispatch within 48 hours of order confirmation. Custom lengths, special grades or surface finishes typically ship within 2-3 weeks. Contact us for a specific lead time on your required size and quantity.

Industrial Cities We Serve:

  • Ahmedabad
  • Aurangabad
  • Bengaluru
  • Chennai
  • Coimbatore
  • Faridabad
  • Gandhidham
  • Greater Noida
  • Gurugram
  • Hazira
  • Hosur
  • Hyderabad
  • Jamnagar
  • Jamshedpur
  • Ludhiana
  • Mumbai
  • Mundra
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  • Nagpur
  • Nashik
  • Navi Mumbai
  • Noida
  • Pune
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Countries We Export To:

  • US
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  • Mexico
  • Germany
  • UK
  • France
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  • Sweden
  • Norway
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  • UAE
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  • Qatar
  • Oman
  • Kuwait
  • Bahrain
  • South Africa
  • Egypt
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  • Australia
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  • Malaysia
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