The stock bolts on these carbs are phillips head, and after repeated use from jetting or modifications, they can strip out pretty easily. Especially if the bike has been outside, the stock bolts accumulate rust like flies on you-know-what and can become stuck or worse, sheared off.
This is a stainless steel allen head bolt replacement kit for a single or dual carburetor honda shadow. The single kit includes 4 bolts for the slide cover and 4 bolts for the float bowl. The dual kit has 8 bolts for the slide covers and 8 bolts for the float bowls.