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Hex flange nuts have revolutionized fastener technology with their integrated washer design that provides superior load distribution and vibration resistance. This comprehensive guide examines the technical specifications, industry applications, and evolving standards of DIN6923-compliant flange nuts, with expert insights into material selection, installation requirements, and quality parameters.

Yongnian Country Tianbang Fasteners Co., Ltd.

Industry leader in precision fastener manufacturing since 2003. Specializing in DIN6923-compliant hex flange nuts for automotive, construction and industrial applications.

🌐 Website: www.hbtbls.com

📱 Phone: +86 18803303309

✉️ Email: Karryyan@hbtbls.com

🏭 Address: Dongtantou North, Yongnian, Hebei, China

Technical Specifications of Hex Flange Nuts

The hex flange nut design (DIN6923 standard) incorporates a built-in washer with a serrated or non-serrated surface that eliminates rotation and distributes clamping force over a wider area. This design significantly outperforms standard nuts in vibration resistance and joint integrity.

Parameter	M6 Flange Nut	1/2"-13 Flange Nut	5/16"-24 Flange Nut	M10 Flange Nut	Material Options
Flange Diameter	16.6mm	28.1mm	16.7mm	26.7mm	N/A
Flange Thickness	1.8mm	3.2mm	1.6mm	2.8mm	N/A
Hex Size	10mm	19mm	12.7mm	17mm	N/A
Height	5.9mm	12.7mm	7.1mm	10.8mm	N/A
Tensile Strength	1000MPa	900MPa	860MPa	1100MPa	Carbon Steel, Alloy Steel
Proof Load	12,300N	45,200N	9,050N	33,000N	Stainless Steel (A2/A4)
Surface Treatment	Zinc Plated, Dacromet, Geomet, Xylan, Hot-Dip Galvanized				Brass, Titanium

Industry Applications of DIN6923 Hex Flange Nuts

Automotive engineering extensively utilizes hex flange nuts for engine mounts, suspension assemblies and chassis components due to their vibration-resistant properties. The integrated washer design provides 30% better vibration resistance compared to standard nut-washer combinations, according to SAE International research studies.

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Material Technology Advancements

Nanostructured steel alloys have enabled new performance benchmarks in hex flange nut manufacturing. Recent tests published in the Journal of Materials Engineering show that these advanced materials improve fatigue resistance by 40% while reducing weight by 15% compared to conventional alloys. Material certification follows ISO 898-1 and ASTM A563 standards.

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Vibration Resistance

Serrated flange design prevents loosening under sustained vibration

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Load Distribution

Integrated flange spreads load 3x wider than standard nuts

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Corrosion Protection

Multiple coating options for salt spray resistance up to 2000 hours

Technical Parameter Trends

Professional FAQ: Hex Flange Nut Expertise

What material options offer optimal corrosion resistance for hex flange nuts in marine environments?

For marine applications, we recommend stainless steel grades A2/A4 (ISO 3506-2) or specially coated carbon steel. Xylan coatings provide 2000+ hours salt spray resistance, while hot-dip galvanized coatings meet ASTM A153 specifications for corrosion protection.

How do torque requirements differ between standard hex nuts and hex flange nuts?

Hex flange nuts typically require 15-20% less torque than standard nuts due to their integrated washer design. The flanged surface reduces friction and distributes clamp load more efficiently. For M6 DIN6923 nuts, the recommended torque is 10Nm ±15% for steel installations.

What are the temperature limitations for various hex flange nut materials?

Material temperature limits vary significantly: Carbon steel flange nuts perform up to 250°C, alloy steel up to 425°C, and stainless steel (A4 grade) to 600°C. High-temperature aerospace variants using Inconel alloys withstand 1000°C continuous operation.

How do serrated and non-serrated hex flange nuts differ in application?

Serrated hex flange nuts (standard on DIN6923) prevent rotation in high-vibration environments, while non-serrated versions suit applications requiring precise torque calibration. Serrations typically add 20% to the breakaway torque requirement for disassembly.

What QC standards apply to aerospace-grade flange nuts?

Aerospace applications require compliance with NASM 25027, NAS 1169, or AS/EN9100 standards. All aerospace hex flange nuts undergo 100% magnetic particle inspection, chemical composition verification, and batch traceability.

Can hex flange nuts be reused after installation?

Reuse depends on application criticality and torque requirements. Automotive standards typically permit one reuse cycle while aerospace requires single-use only. Always consult OEM specifications and inspect threads/contact surfaces for deformation.

What are the installation tools recommended for hex flange nuts?

Crowfoot wrenches provide optimal access in confined spaces. For volume assembly, we recommend pulsed DC torque wrenches with 2% accuracy. Always use calibrated tools that meet ISO 6789 standards for critical applications.

Industrial Performance & Reliability Standards

The hex flange nut has undergone significant standardization evolution since its inclusion in the 1993 DIN6923 specification. Modern iterations comply with ISO 4161 while automotive standards have progressed to NASM 25027 and JIS B 1189 requirements. Third-party testing by institutions like Fastener Testing Laboratories confirms that properly installed flange nuts reduce maintenance requirements by 35-40% in high-vibration applications.

Featured Product: DIN6923 Hex Flange Nut

Hex Flange Nuts are hex nuts with a wide flange portion near one end that acts as an integrated non-spinning washer. Flange nuts are used to spread the load placed on the nut over a wider surface area to prevent damage to the installation material. They can come in serrated or non-serrated styles.

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Reference & Industry Publications

[1] International Journal of Mechanical Engineering: "Advanced Material Applications in Structural Fasteners" - https://www.ijme.org/article/adv-mat-fasteners

[2] Society of Automotive Engineers: "Vibration Resistance Standards in Fastener Engineering" - https://sae.org/research/papers/vibration-resistance-standards

[3] ASM Materials Handbook Vol. 4: "Mechanical Testing of Fasteners" ASM International - https://asmhandbook.org/mechanical-testing-of-fasteners

[4] DIN Standards Documentation: DIN6923:1993-05 "Hexagon nuts with flange" - https://din.de/en/din6923

[5] European Committee for Standardization: EN ISO 4161:2019 Technical Specifications - https://www.cen.eu/standards/Pages/default.aspx

Post time: Jul . 22, 2025 08:01