P1000 Coolant bleed bolt size or part number

[AdamKY]

My 1000-5 has been having overheating issues and had to replace my radiator. When I went to bleed the air from coolant, I dropped the bleed screw and cannot find it. I temporarily used a bolt I had on hand that was similar, but want to order the exact replacement part.

Does anyone know the exact bold (size and thread) or a link to the replacement bleeder bolt for the coolant located on the thermostat housing?

 

[906UP]

Sorry, misread. Here is the one for the T-stat, #10 & 14

 

[AdamKY]

Thanks!!