Industrial Nuts — OEM & Custom Fastener Supply from a Certified Manufacturer
From OEM projects to multi-industry stock supply, CNXD delivers precision-engineered nuts for automotive, machinery, construction, and equipment applications — backed by 30+ years of manufacturing and full traceability.
Precision Nuts for Multiple Industries
CNXD is a professional fastener manufacturer with over 30 years of production experience. We supply high-performance industrial nuts to OEMs, distributors, and wholesalers across automotive, machinery, construction, electrical equipment, and general industrial sectors.
Our expertise spans from high-volume OEM programs — automotive wheel assemblies, engine blocks — to specialized industrial applications including vibration-critical machinery and coastal corrosion-resistant hardware.
Our nut products cover standard fasteners, custom-engineered parts, and replacement hardware with full material traceability and quality documentation, helping you consolidate different applications into one reliable source.
Need a reliable nut supplier for your next project?
Get a QuoteNut Types We Manufacture
Precision-manufactured nuts for critical joints and assemblies — from automotive wheel ends to construction frames, industrial machinery, and equipment enclosures. Each type engineered for specific load, vibration, and environmental requirements.
Hex Nuts
DIN 934 / ISO 4032 compliant. The most widely used nut type for general-purpose fastening across all industries.
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Flange Nuts
DIN 6923 specifications. Integrated flange distributes load without a separate washer — ideal for vibration-critical assemblies.
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Locking Nuts
DIN 985 nylon-insert and all-metal prevailing torque designs. Prevents loosening under vibration in critical applications.
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Weld Nuts
DIN 929/930 standards. Permanent attachment to sheet metal via projection or spot welding for automotive body and structural fabrication.
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Rivet Nuts
Blind fastening solution for thin-wall materials. Creates strong threaded connections in sheet metal, plastics, and composites.
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Cap Nuts
DIN 1587 dome nuts. Protective cover over bolt ends for safety, corrosion sealing, and finished aesthetic appearance.
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Round Nuts
Precision round nuts for bearing adjustment, shaft locking, and slotted applications. Available in metric and imperial sizes.
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Castle Nuts
DIN 935 slotted hexagon design. Used with cotter pins for positive locking in steering, suspension, and safety-critical joints.
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Wing Nuts
Tool-free hand tightening design. Ideal for applications requiring frequent assembly and disassembly in equipment and fixtures.
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Press Nuts
Self-clinching press-in design for permanent installation in thin sheet metal. Provides strong, flush-mounted threaded connections.
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U Nuts
Spring steel clip-on design for panel edges. Quick installation without tools — widely used in automotive body panels and trim assemblies.
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T Nuts
Pronged tee nut design for wood, composite, and soft materials. Provides flush-mount threaded anchoring for furniture and industrial equipment.
View Product →Custom Nuts
Engineered to your specifications. Submit a drawing, sample, or part number — we manufacture custom nuts for any application.
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Wheel Nuts
High-strength wheel nuts for automotive and heavy-duty applications. Available in open-end, closed-end, and locking designs with various finishes.
View Product →Other Nuts
Specialty and non-standard nut types for unique industrial applications. Contact us for availability and custom solutions.
View Product →Materials, Grades & Surface Treatments
Every nut we ship is material-traceable and process-controlled. Our engineering team recommends the optimal combination of material, strength, and coating based on your specific application requirements and environment.
Material & Strength Options
| Category | Material / Grade | Yield Strength | Typical Applications |
|---|---|---|---|
| Carbon Steel | Grade 6 | 400 MPa | Automotive general, machinery |
| Grade 8 | 640 MPa | Suspension, engine blocks | |
| Grade 10 | 900 MPa | Heavy equipment, shock loads | |
| Grade 12 | 1,100 MPa | Aerospace, extreme conditions | |
| Alloy Steel | SCM435 | 1,000 MPa | OEM automotive, machinery |
| 40Cr | 800 MPa | General industrial | |
| Stainless Steel | SS 304 | 240 MPa | Food processing, non-critical saltwater |
| SS 316 | 240 MPa | Coastal, marine, chemical | |
| A4-70 | 700 MPa | Premium structural, vibration-critical | |
| Specialty Alloys | Duplex 2205 | 450 MPa | Offshore, subsea, chemical plants |
| Titanium | 880 MPa | Aerospace, EV battery housings | |
| Inconel 625 | 520 MPa @ 400°C | Gas turbines, exhaust systems |
Thread Sizes
Metric: M3 – M30 (standard or fine pitch) | Imperial: 1/4″ – 1″ (UNC, UNF)
Surface Coatings
Material Selection Quick Guide
| Environment / Application | Recommended Grade | Coating |
|---|---|---|
| General automotive (dry) | Grade 8/10 | Zinc |
| High-vibration suspension | Grade 10 | Dacromet |
| Coastal / marine | SS 316 | Passivate |
| Food processing | SS 304/316L | Passivate |
| High temperature (200–400°C) | Alloy steel | Black oxide |
| Budget-conscious OEM | Grade 6 | Zinc |
Manufacturing Capabilities & In-House Quality Assurance
Vertically integrated production from raw material to finished product — with every step inspected and documented under IATF 16949 quality systems.
Vertical Integration — Complete Process Control
Raw Material Sourcing
Incoming QC & material verification
Cold Heading
Precision nut shaping
Threading & Forming
High-speed automatic machines
Heat Treatment
Hardening, annealing, stress relief
Surface Treatment
Plating, coating, passivation
Final Inspection
QC, packaging & lab testing
Certifications & Quality Systems
Third-Party Verification Support
Not sure about our quality? We support independent validation. Request third-party lab testing at our expense (up to USD 500). Free sample kits (50–100 pcs) available for initial evaluation. First Article Inspection (FAI) on first production batch. Full PPAP documentation for OEM approval.
Want to see our quality certifications and test reports?
Request DocumentsOEM Custom Nut Manufacturing & Engineering Partnership
CNXD is not a catalog-only supplier. We operate as an engineering partner for OEM and custom nut programs — from your first drawing or sample to mass production, backed by decades of automotive OEM experience now extended across industrial, construction, and equipment sectors.
📐 Start from Drawing, Sample, or Part Number
We support three new product startup modes:
- Drawings & specs → Direct manufacturing and validation
- Physical sample → Reverse engineering with dimensional accuracy
- Competitor part number → Cross-reference and equivalent design
Turnaround: Drawing review to quote in 2–3 business days
🔬 In-House Testing Laboratory
Complete quality validation without external labs:
- Torque & clamp force testing
- Hardness & tensile strength verification
- Salt spray testing (ASTM B117)
- Metallurgical analysis & dimensional inspection
📋 Full Technical Documentation
OEM-style document package, automotive supplier-compliant:
- Material Certificates (CoA)
- PPAP Level III & FMEA
- Control plans & SPC charts
- First Article Inspection (FAI) report
🌍 Proven Project Experience
Three decades of OEM and industrial custom programs:
- Automotive: Wheel assemblies, engine blocks, suspension
- Machinery: Pump housings, gearbox mounts
- Construction: Structural frames, anchor systems
- Export to 30+ countries with proven logistics
OEM Project Workflow
Phase 1: Inquiry & Assessment
Submit your drawing, sample, or part number. We respond with feasibility assessment, material recommendations, tooling cost, and preliminary quote.
Phase 2: Tooling & Sample Production
Tooling finalization, prototype batch (50–100 pcs), in-house testing, and QC inspection. You receive a sample kit with test report and documentation.
Phase 3: Sample Approval
You validate samples. We prepare FAI report, PPAP Level III, material certificates, final control plan, and production cost quote.
Phase 4: Mass Production & Delivery
Raw material sourcing through final QC, packaging, and logistics. Full quantity delivered with quality docs, lot traceability, and shipping tracking.
Ready to start a custom nut project?
Get a Custom QuoteFrequently Asked Questions — Nuts, Materials & Ordering
Have a question not listed here?
Contact Our TeamReady to Source Industrial Nuts?
Whether you need standard stock, custom engineering, or bulk OEM programs, our team is ready to support your nut and fastener projects across automotive, machinery, construction, and industrial sectors.
Request a Quote
Provide your specifications and receive a detailed quote within 24 hours.
Upload Drawing
Start a custom nut project with your CAD file, PDF, or sample.
Contact Engineers
Technical questions? Speak directly with our engineering team.
Schedule a Call
15–30 minute technical call to review your application.
