Precision CNC Machined Bolt Fasteners - For Automotive, Construction & Industrial Machinery

Product Description

Our CNC machined bolt fasteners are engineered to deliver exceptional strength, dimensional accuracy, and reliability across critical industries. Manufactured with tight tolerances (±0.01mm) and premium materials, these bolts ensure secure, vibration-resistant connections in the most challenging environments.

Key Features & Benefits

✔ Premium Materials:

• Stainless Steel (304/316) - Corrosion resistance

• Alloy Steel (Grade 8.8/10.9/12.9) - High tensile strength

• Titanium - Lightweight aerospace-grade

✔ Precision Manufacturing:

• CNC Turning & Thread Rolling for perfect thread engagement

• Heat Treatment (Quenching & Tempering) for enhanced durability

• Surface Finishes: Zinc-plated, Hot-Dip Galvanized, Dacromet, or Black Oxide

✔ Wide Application Coverage:

• Automotive: Engine blocks, chassis, transmission systems

• Construction: Steel structures, bridges, heavy equipment

• Industrial Machinery: Pumps, valves, conveyor systems, dies

✔ Custom Solutions Available:

• Non-standard lengths/diameters

• Special thread profiles (Metric, UNC, UNF, Whitworth)

• Unique head designs (Flange, Countersunk, Shoulder)

Technical Specifications

Industry-Specific Advantages

Automotive

• Vibration-resistant locking features

• Weight-optimized designs

• Compatible with robotic assembly

Construction

• Weatherproof coatings

• High shear strength

• Earthquake-resistant designs

Industrial Machinery

• Fatigue-resistant alloys

• Precision alignment

• Maintenance-free operation

Keywords for SEO : CNC machined bolts, high-tensile fasteners, automotive grade bolts, construction anchor bolts, precision industrial fasteners, custom metric bolts

FAQ

1. What materials are available for your CNC bolts?

• Stainless Steel (304/316 for corrosion resistance)

• Alloy Steel (Grade 8.8, 10.9, 12.9 for high strength)

• Titanium (Aerospace/medical applications)

• Exotic Alloys (Inconel, Monel – custom orders)

2. What tolerances can you achieve?

• Standard: ±0.05mm

• High Precision: ±0.01mm (for critical assemblies)

• Thread Tolerance: 6g (ISO), 2A/3A (ANSI)

3. Do you provide custom bolt designs?

✔ Non-standard lengths/diameters
✔ Unique head styles (e.g., flanged, countersunk)
✔ Special threads (left-hand, multi-start, micro-pitch)
✔ Branding/logos laser-engraved

4. How do your bolts perform in extreme conditions?

5. What certifications do you hold?

• ISO 9001:2015 (Quality Management)

• IATF 16949 (Automotive Standards)

• CE/RoHS (EU Compliance)

• Material Test Reports (MTRs) for every batch

6. What’s your lead time?

• Standard Bolts: 3-5 days (in-stock items)

• Custom Bolts: 7-15 days (prototypes), 2-3 weeks (bulk)

• Expedited Services: Available (+30% fee)

7. Do you offer surface treatments?

• Zinc Plating (5-25μm)
• Hot-Dip Galvanizing (50-100μm)
• Black Oxide (Anti-galling)
• Electropolishing (Medical/Food Grade)

8. How do you ensure quality?

1. Raw material certification

2. In-process dimensional checks

3. Post-treatment adhesion testing

4. 100% final inspection (CMM/optical)

5. Salt spray testing for coated variants

9. What’s your MOQ?

• Production Runs: 1000pcs (standard), lower MOQs negotiable

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!