10.9-Grade Dacromet 12-Point Flange Bolts
- Material: High-strength alloy steel
- Grade: 10.9
- Surface Treatment: Dacromet
- Head Style: 12-point flange head
- Thread: Metric coarse thread (custom thread pitch & length available)
- Tolerance: ISO general fastener tolerance standard
- Custom Options: Custom diameters, thread lengths, special coatings upon request
Product Overview of 10.9-Grade Dacromet 12-Point Flange Bolts
This high-strength 12-point flange bolt is manufactured to 10.9 grade mechanical property, finished with Dacromet coating for superior corrosion resistance. The twelve-point drive design delivers high torque-transfer capacity, ideal for compact installation spaces where standard hex fasteners cannot fit. Integrated flange face distributes clamping pressure evenly without additional flat washer, widely adopted for automotive, heavy-duty machinery, chassis and off-road equipment assemblies.
Superior Features of 10.9-Grade Dacromet 12-Point Flange Bolts
- Strength Grade: Class 10.9 high-strength carbon steel, excellent tensile and yield performance for heavy-load joint requirements
- Drive Type: 12-point (12-lobe) head, allows high tightening torque with smaller head profile compared to hex bolts
- Integrated Flange Face: Built-in flange spreads clamping force, eliminates separate washer, reduces assembly parts count
- Surface Finish: Dacromet coating. Outstanding salt-spray resistance, good heat-resistance, no hydrogen-embrittlement risk during treatment
- Precision Thread: Full-size rolled thread, smooth engagement, consistent preload under vibration and dynamic working conditions
- Application Constraints: Suited for high-stress, outdoor, damp and corrosive working environments
Primary Automotive Applications of 10.9-Grade Dacromet 12-Point Flange Bolts
- Vehicle chassis & sub-frame assemblies
- Suspension and steering components
- Powertrain/engine peripheral mounting points
- Off-road vehicle and commercial truck parts
- Under-carriage assemblies exposed to salt spray and wet conditions
Buying Notes for 10.9-Grade Dacromet 12-Point Flange Bolts
Dacromet finish is strongly preferred over ordinary zinc plating for under-body automotive use for long-term anti-corrosion. Please specify thread size, bolt length and quantity for quotation. Custom specs are supported for bulk automotive projects.
