Hercules Speedometer screw/ Tachometer drive

This is a replacement speedometer screw i made for my dad. The scew is available with 6, 7 and 8 threads. The print comes out great if you print it up side down. So far I only tested PLA and nylon (polyamide-6). PLA is not sutable for this speedometer screw as it already softens at low temperature. Anealing might help here.