you can use one of these replacements

Colony Machine #6902-5 1/4-28 SAE Chrome Plated Pike Nuts - 5 Pack

Note: These bars have 2 small holes on the left side just past the grip area that will accommodate the screws for the factory horn/hi-low switch that would be found on a stock bike

This kit contains all components needed to completely rebuild the rockers on the 1930-1948 Big Twin Springers

Includes o-ring

#8787-2 Generator Allen Screw Kit 1971-1985 Harley-Davidson Sportster - Chrome Plated Subcategory_Exhaust Fabrication Parts you can use one ofChrome plated generator allen screws fit Sportster 1971 1985. Made in Ohio, USA.