Precision CNC Machined Parts - Heavy-Duty Truck Bolts, Hex Nuts & Automotive Components

Precision CNC Machined Parts - Heavy-Duty Truck Bolts, Hex Nuts & Automotive Components

Product Description
Our precision CNC machined fasteners and components are engineered for demanding applications in commercial vehicles, industrial machinery, and automotive systems. Manufactured using advanced CNC turning and milling processes, these parts deliver exceptional dimensional accuracy, strength, and durability under extreme operating conditions.

Key Product Range

• Heavy-Duty Truck Bolts: Grade 8.8/10.9 high-tensile fasteners

• Hexagonal Nuts: Flange nuts, lock nuts, and standard hex nuts

• Automotive Components: Engine mounts, suspension parts, and chassis fasteners

Technical Highlights
✔ Material Excellence:

• Carbon steel (AISI 1018/1045)
• Alloy steel (4140/4340)
• Stainless steel (304/316)
• Aluminum (6061-T6)

✔ Precision Manufacturing:

• Tolerance: ±0.005" (±0.13mm)
• Surface finish: Ra 3.2μm or better
• Thread accuracy: Class 4H/6H

✔ Enhanced Performance:

• Heat-treated options available
• Corrosion-resistant coatings (zinc, Dacromet, nickel plating)
• Vibration-resistant designs

Quality Assurance:

• ISO 9001:2015 certified production
• 100% dimensional inspection
• Material certificates available (MTC)
• RoHS & REACH compliant

Customization Services:

• OEM/ODM available
• Special threads (UNF, metric, ACME)
• Custom markings/logos
• Unique head designs

Applications:

• Commercial vehicle assembly
• Truck maintenance and repair
• Heavy equipment manufacturing
• Automotive aftermarket

Why Choose Us?

• 15+ years CNC machining expertise
• 30-day lead time for standard parts
• Competitive MOQ (50 pieces for standard items)
• Global shipping with export packaging

FAQ

1. What materials do you use for CNC machined parts?

We work with:

• Carbon Steel: Grade 1018, 1045 (standard)

• Alloy Steel: 4140, 4340 (heat-treated options)

• Stainless Steel: 304/316 (corrosion-resistant)

• Aluminum: 6061-T6 (lightweight applications)

• Brass/Bronze: Available upon request

2. What tolerances can you achieve?

• Standard: ±0.005" (±0.13mm)

• High-Precision: ±0.001" (±0.03mm) for critical applications

• Thread Standards: UNC, UNF, Metric (4H/6H class)

3. Do you offer surface treatments?

Yes, including:

• Plating: Zinc, nickel, chrome

• Coatings: Dacromet, black oxide

• Special Finishes: Passivation, anodizing (for aluminum)

4. What's your production capacity?

• Large Orders: 50,000+ units/month capacity

• Lead Time: 30-45days (custom)

5. Can you produce custom-designed fasteners?

Absolutely. We provide:

• OEM Services: From drawings/samples

• DFM Analysis: Design-for-manufacturing advice

• Prototyping: 5-10 day turnaround

6. How do you ensure quality control?

• 3-Stage Inspection:

  1. Raw material verification

  2. In-process checks

  3. Final dimensional/functional testing

• Equipment: CMM, optical comparators, thread gauges

• Certificates: Material test reports available

7. What packaging options do you offer?

• Standard: Plastic bags + carton boxes

• Bulk: Wooden pallets with waterproof wrapping

• Special: VCI packaging for corrosion protection

8. What's your minimum order quantity?

• Custom Designs: Available for 1,000+ units

Qingdao Sande Technology Co., Ltd. is located in Qingdao. We are specialized in manufacturing forging, CNC machining and various surface treatments. We have over 16 years of experience.
We have a professional and experienced team of engineers, advanced production and testing equipment, a powerful quality control system, and professional customer service... We will offer professional services, high-quality products and favorable prices. We sincerely welcome domestic and foreign customers to cooperate with us!