CARBURATOR STUDS -BULLET TIP NOSE4 per Set. These carburetor studs incorporate 3/16" hex bullet tips for easy installation and to guide fasteners into position and accept hex nuts without cross-threading. The integral socket head on these fully threaded 5/16"-18 carb studs provides easy installation and removal. The studs are black oxide and the hex nuts are cadmium plated to resist corrosion and provide a clean professional appearance.