Stainless Steel Wire Thread Inserts DIN8140
Product Overview
Stainless Steel Wire Thread Inserts DIN8140 are high-performance threaded fasteners used to provide strong internal threads in materials with low shear strength such as aluminum, magnesium, and thermoplastics. These helically coiled inserts are specifically designed to meet DIN8140 standard requirements, ensuring reliable performance even in demanding industrial applications. Their stainless steel construction offers excellent corrosion resistance, durability, and longevity even under continuous load or harsh environmental exposure.
Wire thread inserts are widely used in industries that require robust and long-lasting threaded connections, while also minimizing thread wear and protecting the base material.

Product Specification Table
| Specification | Details |
|---|---|
| Standard | DIN8140 |
| Material | Stainless Steel |
| Thread Type | Metric Coarse / Fine |
| Internal Thread Size | M2 to M30 |
| Insert Length | 1D, 1.5D, 2D, 2.5D, and 3D available |
| Insert Type | Free-Running / Locking |
| Installation Tool | Manual or Power Insert Tools |
| Pitch | As per ISO Metric standards |
Technical Parameters
| Parameter | Description |
|---|---|
| Strength Class | Up to 12.9 for bolted connections |
| Coating / Finish | Passivated / Plain |
| Compliance | ISO, DIN8140, GB/T, ANSI standards |
| Environmental Standards | RoHS, REACH Certified |
| Operating Temperature | -60°C to 250°C |
| Corrosion Resistance | High resistance due to stainless construction |
Material and Manufacturing Process
Stainless Steel Wire Thread Inserts are typically manufactured using AISI 304 or AISI 316 stainless steel wire. 304 stainless steel is widely used due to its excellent corrosion resistance and cost-effectiveness, while 316 offers superior resistance to marine and chemical environments.
The production process for these inserts includes:
- Raw Material Selection (304/316 wire)
- Forming (Helical Winding and Cutting)
- Heat Treatment (If required)
- Surface Passivation or Lubrication
- 100% Inspection
- Packaging
These processes ensure consistent part geometry, strength, and surface finish suitable for automatic installation as well.
Common Applications Across Industries
Stainless Steel Wire Thread Inserts DIN8140 are utilized in diverse industrial sectors such as:
- Aerospace & Aviation: Aircraft engine components, aluminum castings
- Automotive: Transmission assemblies, engine housings
- Electronics: Printed circuit boards, sensor housings
- Marine: Pumps, valves in aggressive saltwater environments
- Machinery Manufacturing: Molds, jigs, and fixtures
These inserts are particularly valuable in repair and maintenance applications for restoring stripped threads.
Precision and Performance: Wire Thread Inserts for Enhanced Fastening
Precision-engineered wire thread inserts offer several critical benefits in challenging environments. The use of stainless steel ensures high tensile strength and outstanding corrosion resistance. Their spring-like construction allows them to compress and expand inside a tapped hole, creating perfect load distribution and minimizing thread loosening under vibration or thermal cycling.
Product Advantages & Competitive Edge
Key benefits of Stainless Steel Wire Thread Inserts DIN8140 from Flybear Fastener include:
- Premium Material Selection: AISI 304 and 316 stainless steel for different environments
- Precision Engineering: Tight tolerance, perfect engagement between insert and tapped hole
- Advanced Surface Treatment: Dry film lubrication for easier installation
- Broad Customization Capability: Available in custom lengths and thread specifications
- Ample Inventory & Fast Delivery: Stock ready-to-ship globally
- Competent Technical Support & After-Sales Service: Backed with solid industry experience
These factors make Flybear Fastener inserts the go-to solution for industries requiring high-performance fastening solutions.
Inspection and Quality Control
At Flybear Fastener, maintaining quality in every insert is a top priority. Our quality assurance process includes:
- Thread gauge inspection
- Dimensional measurement tools
- Salt spray testing for corrosion resistance
- Optical sorting and vision inspection machines
- Tensile and compression testing
- Hardness and torque tests
- Certified to ISO9001 and IATF16949 quality systems
Every batch undergoes stringent 100% checks based on statistical sampling before shipment, with detailed traceability records maintained for customer assurance.
Selection & Procurement Guide
When choosing Stainless Steel Wire Thread Inserts DIN8140, consider the following factors:
- Thread size and pitch (based on mating bolt)
- Insert length (usually matched to material thickness)
- Free-running versus locking inserts (locking types prevent screw loosening)
- Environment (304 for general use, 316 for corrosive settings)
- Volume requirements (bulk vs. small orders)
- Installation tools required (available on request)
Flybear Fastener offers technical guidance and datasheets to assist in correct product selection.
Conclusion & Company Promotion
At Flybear Fastener, we always uphold our commitment to “Quality First, Customer Foremost,” aiming to provide the highest-quality fastening products through advanced processes and professional services. We offer a one-stop solution that includes design consultation, tooling, bulk supply, and technical advice for every application.
Explore our wide range of stainless steel and high-performance fastening components, or contact us today for premium-grade inserts or customised engineering offers. Our responsive team is ready to assist with technical support and instant quoting.








