Internal and External Threaded Copper Nut
We take an M8 outer / M6 inner brass nut as an example. The outer thread tightening torque is 15 N·m. The inner thread bolt torque is 10 N·m. The nut body does not deform or crack. Brass has an electrical resistivity of about 0.07 Ω·mm²/m. This works for connections that need conductivity.
Change Thread Sizes with Our Copper Nut
Do you have an M8 thread hole but need to put in an M6 bolt? Enlarging the hole is a lot of work. Or your thread hole is stripped. The whole part would be waste. Our Internal and External Threaded Copper Nut solves both problems. Its outer thread goes into the bigger thread hole. Its inner thread takes the smaller bolt. We are a Shanghai factory. We have made fasteners for 20 years.
Check Our Torque Data and Electrical Conductivity
We take an M8 outer / M6 inner brass nut as an example. The outer thread tightening torque is 15 N·m. The inner thread bolt torque is 10 N·m. The nut body does not deform or crack. Brass has an electrical resistivity of about 0.07 Ω·mm²/m. This works for connections that need conductivity. For example, ground wire connections. We have M6 and M8 sizes. For M6 size: outer thread M6×1.0. Inner thread M4×0.7, M5×0.8, or M6×1.0. Total length is 10-15 mm. For M8 size: outer thread M8×1.25. Inner thread M4, M5, M6, or M8. Total length is 12-18 mm. Our material is brass H59 or H62. The copper content is 57-62%. The lead content is <0.3%. Brass has good anti-galling properties. It will not cold weld like stainless steel on stainless steel. The production uses automatic lathes for precision turning. The threads are rolled or ground. Outer thread precision is 6g. Inner thread precision is 6H. The hex head width meets standards. You can use a wrench to tighten.
|
Parameter |
Standard / Value |
|
Outer Thread Torque (M8/M6) |
15 N·m (no deformation) |
|
Inner Thread Torque (M8/M6) |
10 N·m (no deformation) |
|
Brass Resistivity |
~0.07 Ω·mm²/m |
|
Copper Content (H59/H62) |
57-62% |
Why Our Follow-up Service and Installation Help You
We have order trackers. They follow every step from your first price inquiry to delivery at your warehouse. If your customer has assembly problems, we have a person to talk and solve it. Payment is 30% deposit and 70% balance. We take US dollars. Big orders get discounts. Installation is simple. First, screw the outer thread of the copper nut into the larger thread hole. Use a hex wrench or a flathead screwdriver (if it has a slot). Tighten it. Then screw the smaller bolt into the inner thread. The nut comes in a natural color with no surface finish. Brass itself has good corrosion resistance. It will not rust indoors for a long time. If you need a special color or more corrosion resistance, we can add nickel plating or passivation. We pack your order well. We have done this for 20 years.
The entire product line is fully customizable.
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