This is our new special screw that holds your accelerator pump lever to the carb top.   Could be brass or nickel finish depending on what is available when you purchase.  

S-9641

I have produced my own carburetor.  VS-9T7.  Check my E-Bay listing # 363898763577.   Listing shows chrome finish but available in standard finish.  Available as primary or secondary application.  I have worked out all of the “kinks” that other reproductions have encountered.  Superior quality and workmanship.