company news about Carbon Steel Screws: Ultimate Guide to Types, Coatings & Industrial Applications

Meta Description: Discover how to choose the right carbon steel screws! Compare low/medium/high carbon types, coatings like galvanizing, and their uses in construction, automotive, and machinery.

Carbon steel screws fasten 60% of global industrial assemblies—from skyscrapers to car engines. This guide compares screw types by carbon content, reveals cost vs. strength tradeoffs, and shares FINEX’s proven solutions for corrosive environments.

Carbon Steel Screw Types: Strength & Cost Compared

Case Study: Ford F-150 uses medium carbon screws (SAE Grade 5) for bed assembly—withstands 1,500 lbs payload.

5 Key Factors When Selecting Carbon Steel Screws

1. Environment:

   • Indoor/low moisture: Plain steel
   • Coastal: Hot-dip galvanized (100μm coating)

2. Load Requirements:

   • M10 low carbon: 6.8kN shear
   • M10 high carbon: 14kN shear

3. Temperature:

   • Avoid high carbon below -20°C (risk of brittle fracture)

4. Corrosion Protection:

   • Zinc plating: 500h salt spray (ASTM B117)
   • Dacromet: 1,000h salt spray

5. Cost Efficiency:

   • Bulk savings: 30% discount on 10,000+ units

Surface Treatments: Performance & Pricing

Pro Tip: Pair black oxide coating with oil for 3x rust prevention in machinery.

Industry-Specific Applications

1. Construction (ASTM A563)

• Use Case: Steel beam connections
• FINEX Solution: A325 heavy hex screws with 150μm galvanizing

2. Automotive (SAE J429)

• Challenge: Engine vibration @ 6,000 RPM
• Fix: Grade 8 flange screws with Loctite 263

3. Agriculture (ISO 898-1)

• Problem: Fertilizer corrosion
• Solution: Dacromet-coated M20 screws

Carbon Steel vs. Stainless: When to Choose

3 Critical Mistakes to Avoid

1. Mixing Metals: Steel screws + aluminum → galvanic corrosion
2. Over-Torquing: Exceeds 75% yield strength → thread stripping
3. Wrong Coating: Zinc in >120°C environments → flaking

Why FINEX Carbon Steel Screws Lead the Market

• Material Traceability: Mill certificates for every batch
• Smart Packaging: RFID-tagged boxes for inventory tracking
• Custom Solutions:
  • Non-standard lengths (1–300mm)
  • Proprietary coatings (5,000h salt spray)

Free Resource: Download Our Screw Selection Calculator