Do you have an aluminum black coated MTH stud?
Turnlock can supply the slotted head black coated aluminum stud MTHTLS-*HSAB
It's a high strength aluminum part with an extra black coating.
The standard high strength aluminum material part you can review here:
https://www.turngrip.store/mthtls-5hsa
If you need any black coating on an aluminum or standard part, please contact us.