304 Stainless Steel Black Oxide Nylon Insert Lock Nut ASME ANSI B18.16.6
304 stainless steel black oxide nylon insert lock nut ASME ANSI B18.16.6 is a reliable self-locking fastening component designed for applications requiring corrosion resistance, vibration resistance, and stable locking performance. The 304 stainless steel black oxide nylon insert lock nut ASME ANSI B18.16.6 is manufactured from 304 stainless steel with a black oxide surface treatment and integrated nylon insert, providing secure thread locking and improved assembly reliability.
The 304 stainless steel black oxide nylon insert lock nut ASME ANSI B18.16.6 is widely used in machinery, automotive equipment, electrical systems, industrial assemblies, and OEM manufacturing applications where preventing loosening under vibration is essential.

Product Overview
The 304 stainless steel black oxide nylon insert lock nut ASME ANSI B18.16.6 is a hexagonal self-locking nut featuring a nylon insert positioned inside the nut thread area. During installation, the nylon element creates friction with the mating screw or bolt thread, helping maintain fastening stability under vibration and dynamic loads.
Compared with standard hex nuts, the 304 stainless steel black oxide nylon insert lock nut ASME ANSI B18.16.6 provides additional locking performance without requiring additional locking washers or adhesives. The 304 stainless steel construction offers excellent corrosion resistance, while the black oxide finish provides a distinctive dark appearance.
This lock nut is commonly selected by equipment manufacturers, mechanical engineers, distributors, and industrial assembly suppliers.
Product Specifications
| Item | Description |
|---|---|
| Product Name | 304 Stainless Steel Black Oxide Nylon Insert Lock Nut |
| Standard | ASME ANSI B18.16.6 |
| Material | 304 Stainless Steel |
| Nut Type | Nylon Insert Hex Lock Nut |
| Locking Method | Nylon Insert Friction Lock |
| Thread Standard | Metric / UNC / UNF Available |
| Size Range | According to ASME ANSI B18.16.6 |
| Thread Direction | Right Hand |
| Surface Finish | Black Oxide |
| Insert Material | Nylon |
| Application | Anti-Loosening Fastening |
| Packaging | Bulk / Carton / OEM Packaging |
| Customization | Size, insert, packaging available |
Technical Parameters
| Parameter | Value |
|---|---|
| Material | 304 Stainless Steel |
| Tensile Strength | According to Nut Grade Requirement |
| Yield Strength | According to Material Specification |
| Hardness | According to Manufacturing Requirement |
| Corrosion Resistance | Excellent |
| Locking Performance | Nylon Insert Friction Lock |
| Temperature Resistance | According to Nylon Insert Grade |
| Surface Treatment | Black Oxide |
| Manufacturing Standard | ASME ANSI B18.16.6 |
Materials and Manufacturing Process
The 304 stainless steel black oxide nylon insert lock nut ASME ANSI B18.16.6 is manufactured through precision forming, threading, surface treatment, and insert assembly processes.
- Raw material selection: High-quality 304 stainless steel
- Material inspection: Chemical composition verification
- Nut forming: Cold forging or precision machining process
- Thread processing: Accurate internal thread production
- Nylon insert installation: Precision fitting of locking element
- Black oxide treatment: Creates uniform dark surface finish
- Cleaning process: Removes processing residues
- Inspection: Thread gauge testing, dimensional inspection, insert locking performance verification
- Packaging: Protective industrial packaging for transportation
Each 304 stainless steel black oxide nylon insert lock nut ASME ANSI B18.16.6 is produced under strict quality control to ensure reliable fastening performance.
Applications of the Product
The 304 stainless steel black oxide nylon insert lock nut ASME ANSI B18.16.6 is widely used in industries requiring secure vibration-resistant fastening:
- Automotive industry: Vehicle components and mechanical assemblies
- Machinery manufacturing: Equipment structures and moving parts
- Electrical equipment: Control cabinets and mounting systems
- Industrial automation: Precision equipment assemblies
- Construction equipment: Mechanical connections
- Renewable energy: Equipment mounting applications
- Manufacturing systems: Production line machinery
- OEM products: Customized assembly solutions
Its corrosion-resistant material and locking design make it suitable for both indoor and outdoor industrial applications.
Why Choose This Product
- Premium 304 stainless steel material
- Reliable nylon insert locking function
- Prevents loosening caused by vibration
- Black oxide finish for unique appearance
- Excellent corrosion resistance
- Stable thread performance
- Suitable for repeated industrial assembly
- Available for OEM customization
- Compatible with various fastening systems
The 304 stainless steel black oxide nylon insert lock nut ASME ANSI B18.16.6 provides a dependable anti-loosening fastening solution.
Why Choose Flybear
Flybear is a professional manufacturer specializing in industrial fasteners and customized fastening solutions.
- Experience with stainless steel locking nuts
- Support for ASME and ANSI standard products
- Advanced cold forging and threading capability
- Professional surface treatment management
- OEM/ODM customization support
- Stable production capacity for bulk supply
- Global export experience
- Engineering support for customized fastening requirements
Flybear provides reliable fastening products for machinery, automotive, industrial equipment, and OEM customers worldwide.
Quality Inspection and Control
Quality assurance is maintained throughout production:
- Stainless steel chemical composition analysis
- Raw material certificate verification
- Thread gauge inspection
- Dimensional accuracy inspection
- Nylon insert fitting inspection
- Locking torque testing
- Surface finish inspection
- Packaging quality inspection
All manufacturing processes follow ISO-based quality management systems to ensure consistent product reliability.
Selection Guide
When selecting a 304 stainless steel black oxide nylon insert lock nut ASME ANSI B18.16.6, consider:
- Matching bolt or screw thread specification
- Required locking performance
- Operating environment
- Corrosion exposure level
- Temperature conditions
- Assembly requirements
Correct selection ensures secure fastening and long-term connection stability.
FAQ
1. What is a nylon insert lock nut used for?
It is used to prevent threaded fasteners from loosening due to vibration or movement.
2. Why choose 304 stainless steel for lock nuts?
304 stainless steel provides excellent corrosion resistance and reliable mechanical performance.
3. What is the function of the nylon insert?
The nylon insert increases friction between threads and improves locking performance.
4. Can ASME ANSI B18.16.6 lock nuts be customized?
Yes, Flybear supports customized materials, sizes, inserts, finishes, and packaging.
5. Is black oxide suitable for stainless steel lock nuts?
Yes, black oxide treatment can provide a dark decorative finish and additional surface characteristics.
We always adhere to the philosophy of quality first and customer first, providing customers with high-quality fastener products and one-stop fastener solutions.
Contact us for quotation, customization, and technical support via Contact Us.




