I am a China-based manufacturer delivering reliable black flange Allen bolts for industrial machinery and structural assemblies. If you’re a buyer looking for steady supply, you’ll appreciate my consistent quality and fast lead times. These bolts feature corrosion-resistant finishes, high-strength alloy, and precise flange dimensions for even load distribution. I control every step from material selection to packaging, making sure threading, torque tolerance, and anti-loosening performance stay right on spec. We offer competitive bulk pricing, configurable packaging, and certificates like ISO 9001 and material test reports for traceability. Flexible MOQs, customizable head sizes and thread pitches, plus on-time shipping means OEMs and distributors can streamline procurement without headaches. If you need a dependable China Manufacturer to supply black flange Allen bolts, I’m ready to discuss your specs, certs, and delivery schedule.
Black flange Allen bolts play a critical role in high-stress assemblies where space is tight and fastener reliability matters. The flange distributes loading to prevent pull-through and reduces the risk of loosening under vibration, making them a staple in machinery, automotive, and construction projects. A durable black finish not only enhances corrosion resistance but also helps conceal wear in demanding environments. Global buyers seek manufacturers that deliver consistent material quality, precise tolerances, and robust traceability across batches, backed by recognized standards such as ISO, DIN, and SAE. Choosing a trusted supplier means looking beyond unit price. Verify source material (carbon steel, alloy steel, stainless variants), heat treatment, surface coating (black oxide with passivation or other protective layers), and post-production testing (hardness, torque, pull-out). Ask about lead times, minimum orders, and scalable capacity to meet project timelines. Effective suppliers provide transparent QC documentation, packaging that protects threads, and reliable logistics for global delivery. With the right partner, black flange Allen bolts become a dependable, long-term component in any critical assembly.
| Size (Nominal) | Pitch (mm) | Head Type | Flange Diameter (mm) | Length (mm) | Material | Finish | Grade | Tensile Strength (MPa) |
|---|---|---|---|---|---|---|---|---|
| M4 x 8 | 0.7 | Socket cap (Hex Socket) | 7.0 | 8 | Alloy Steel | Black Oxide | 8.8 | 800 |
| M5 x 10 | 0.8 | Socket cap (Hex Socket) | 8.0 | 10 | Alloy Steel | Black Oxide | 8.8 | 800 |
| M6 x 12 | 1.0 | Socket cap (Hex Socket) | 10.0 | 12 | Alloy Steel | Black Oxide | 10.9 | 1040 |
| M6 x 20 | 1.0 | Socket cap (Hex Socket) | 13.0 | 20 | Alloy Steel | Black Oxide | 8.8 | 800 |
| M8 x 12 | 1.25 | Socket cap (Hex Socket) | 16.0 | 12 | Alloy Steel | Black Oxide | 8.8 | 800 |
| M8 x 25 | 1.25 | Socket cap (Hex Socket) | 16.0 | 25 | Alloy Steel | Black Oxide | 10.9 | 1040 |
| M10 x 20 | 1.5 | Socket cap (Hex Socket) | 20.0 | 20 | Alloy Steel | Black Oxide | 8.8 | 800 |
| M12 x 30 | 1.75 | Socket cap (Hex Socket) | 28.0 | 30 | Alloy Steel | Black Oxide | 10.9 | 1040 |