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Grade 8.8 / 10.9 Black Oxide Hex Bolts
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Grade 8.8 Black Oxide Hex Bolts (DIN 933)
These Grade 8.8 black oxide hex bolts are engineered for high-torque fastening in industrial, machinery, and structural applications. The black oxide finish provides a sleek appearance and mild corrosion resistance, while heat-treated steel construction ensures reliable performance under heavy loads. Manufactured to DIN 933 standards for universal compatibility.✅ Key Features- Grade 8.8 High Strength: Designed for heavy-duty fastening applications requiring maximum tensile strength
- Black Oxide Finish: Provides mild corrosion resistance and a professional black appearance
- Hex Head Design: Easy installation with standard wrenches
- Precision Threading: Clean, uniform threads for smooth engagement and vibration-resistant locking
- DIN 933 Compliant: Manufactured to international standards for consistent fit
✅ Common Applications- Industrial machinery, equipment assembly, and maintenance
- Construction, structural steel, and heavy-duty projects
- Automotive, robotics, and tooling applications
- Any application requiring durable, high-strength fasteners
✅ Why Choose Our Black Oxide Hex Bolts?- ISO certified quality control for consistent strength and dimensions
- OEM/ODM customization for custom sizes, grades, and finishes
- Bulk pricing for large orders and fast lead times
- Available in higher grades (10.9/12.9) and various sizes
Contact us today for a free quote on custom or standard black oxide hex bolts.📋Feature Details Product Name
Grade 8.8 Black Oxide Hex Bolts (DIN 933) Material
High-Strength Carbon Steel Finish
Black Oxide Strength Grades
8.8 / 10.9 / 12.9 (custom grades available) Standards
DIN 933, ISO 4017, GB 5783 Sizes
M3 to M36 (custom sizes available) Applications
Industrial machinery, construction, automotive, structural projects Customization
Custom thread pitches, lengths, and finishes available
Exhibition
Factory direct supply quality trust
Customized process Intimate service
Online Consultation
Send Pictures And Samples
Factory Quotation
Place Order And Make Payment
Sample Confirmation
Delivery Complete
After-Sales Guarantee
FAQ
Are you a trading company or a manufacturer?
We are a large, leading company in the industry with decades of experience in the manufacture and development of fasteners and a recognized reputation.
What can you buy from us?
Our company mainly produces bolts GB5782 GB5783、DIN933/931、Quenching black,electroplating zincHot dip galvanized anti-corrosion,Dacromet anti-corrosion,nut GBG170DIN934、Customized special-shaped bolts and nuts.
How can we guarantee quality?
Always provide pre-production samples before mass production; always conduct a final inspection before shipment.
Do you support customized services?
Yes, we support custom CNC non-standard irregular parts.
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