International Standards and Testing Methods of Rivet Nuts

Rivet nuts—also known as blind rivet nuts—are manufactured and tested to multiple international standards. These standards ensure consistency in dimensions, performance, and installation quality across industries such as automotive, aerospace, construction, and electronics.

DIN Standards of Blind Rivet Nuts

The German DIN standards are widely used across Europe and specify the geometry and performance of blind rivet nuts in detail. Common DIN standards include:

• DIN 73378 – Dimensions and types of blind rivet nuts (round or hex body, open or closed end)
• DIN 267 Part 30 – Mechanical performance requirements for blind rivet nuts

These standards define:

• Head styles: flat head, countersunk head, reduced head
• Body types: round, half-hex, full-hex
• Thread sizes and tolerances
• Axial and torsional load testing requirements

ISO Standards of Rivet Nuts for Global Applications

ISO standards provide harmonized technical specifications used globally. Manufacturers and buyers worldwide commonly adopt ISO-compliant rivet nuts.

Key ISO standards include:

• ISO 15977 – Dimensional and mechanical requirements for blind rivet nuts
• ISO 14589 – Performance testing methods for blind rivet nuts
• ISO 898-2 – Mechanical properties of nuts under load
• ISO 4759-1 – Tolerance classes for fasteners, including internal threads

ISO standards ensure consistent quality in:

• Thread class and fit (e.g., 6H for metric rivet nuts)
• Surface finish and corrosion protection
• Pull-out and spin-out resistance testing

IFI Standards of Rivet Nuts for the North American Market

IFI (Industrial Fasteners Institute) standards are widely adopted in the U.S. and Canada for rivet nuts used in mechanical, structural, and industrial applications.

Relevant IFI specifications include:

• IFI-146 – Inch series blind rivet nuts
• IFI-147 – Metric series blind rivet nuts

These standards define:

• Body and thread dimensions for both inch and metric sizes
• Minimum mechanical performance (tensile strength, torque, push-out values)
• Material and hardness requirements for steel, stainless steel, and aluminum rivet nuts

Mechanical Testing Methods of Rivet Nuts

To verify the structural performance of rivet nuts, several mechanical tests are conducted according to international standards such as ISO 14589 and DIN 267-30:

• Pull-Out Test: Measures axial force required to extract the rivet nut from the base material
• Spin-Out Test: Assesses the torque required to rotate the nut within its installed position
• Thread Fit Test: Verifies thread accuracy with Go/No-Go gauges
• Shear and Tensile Testing: Validates the load-bearing capacity of the fastener in real-world applications

Corrosion and Surface Testing of Stainless Steel Rivet Nuts

For rivet nuts used in outdoor, marine, or chemically exposed environments, corrosion resistance is critical.

• Salt Spray Test (ISO 9227 / ASTM B117): Assesses the protective coating or base material’s resistance to corrosion over time
• Surface Treatment Evaluation: Includes zinc plating, passivation, anodizing, or black oxide finishing, depending on application
• Material Hardness Testing: Ensures the nut can maintain integrity under load (e.g., Rockwell or Vickers hardness tests)

Dimensional Inspection of Rivet Nuts During Quality Control

Each rivet nut is measured and inspected to ensure it meets design tolerances and customer specifications. Typical inspection items include:

• Head diameter and thickness
• Body outer diameter and knurl depth
• Thread pitch, depth, and fit
• Grip range and total length
• Conformance to 2D or 3D CAD drawings or technical drawings (per ISO or DIN)

Application-Specific Standards of Blind Rivet Nuts in Industry

In addition to general standards, some industries have proprietary specifications:

• Automotive: OEMs like BMW, VW, or GM often require DIN or ISO-compliant rivet nuts with added PPAP or IMDS documentation
• Aerospace: Special rivet nuts must meet AS or NAS standards
• Electronics & HVAC: Require sealed closed-end stainless steel rivet nuts with high precision and corrosion resistance

Why Choose Xinchi Fasteners?

At Xinchi Fasteners, we specialize in producing high-quality rivet nuts in a wide range of sizes, materials, and finishes. Whether you need carbon steel, stainless steel (304/316), or corrosion-resistant coatings like zinc plating or hot-dip galvanizing, we’ve got you covered.

• Factory Direct Supply: We are a professional manufacturer with competitive pricing and stable lead times.
• Custom Solutions: We support OEM & ODM services to meet specific project requirements.
• Strict Quality Control: All products go through multi-step inspections, including thread tolerance, coating thickness, and pull-out testing.
• Global Shipping: We have experience serving clients across Europe, North America, Southeast Asia, and the Middle East.
• Fast Response & Support: Our English-speaking sales team provides quick quotes and technical assistance.

XINCHI is a trustworthy fastener company, especially in furniture nuts. We have a factory,  founded in 2007. We are the designated fastener supplier to“STAPLE”. As a trusted fastener supplier, XINCHI offers a wide range of high-quality fasteners, including nuts, screws, bolts, rivets, and washers. If you would like to learn more about fasteners or are interested in wholesale fasteners, please do not hesitate to contact us. Our experienced and expert service team will reply as soon as possible.

Whether you’re sourcing for furniture manufacturing, construction, agriculture, or OEM hardware distribution, Xinchi Fasteners is your trusted partner for durable, cost-effective, and customizable fastening solutions.