No.
The all have the same pitch (distance between the center of a roler to the center of the next roller) - the 1st number is a 4, which means that the pitch is 4/8 of an inch (or, 1/2".)
There are two other factors which can come into play: The width of the chain, and the roller/pin diameter. 410 chain is 1/8th inch wide, meaning that it is designed for a sprocket which is 1/8 inch thick. #41 chain, on the other hand is designed for a sprocket which is 1/4 inch thick. Now, #41 chain has a smaller roller diameter (0.306 in) than does #40 (0.312 in) - ref
wikipedia. ANSI chain numbers are somewhat confusing, as they evolved over time...
Refer to
this table at azusa.com - it has lots of good stuff. According to this table, #415 is the same as #42, and #410 is the same as #43. 415 chain has a width of 3/16 inch.
Also, note the 'tensile strength' column above. This number has to be de-rated for use, especially when you're using a master link. The master link is the weak point on a chain, and when
its load rating is exceeded, it bends and 'opens up.' Per the wiki article, the rule of thumb is, for a standard slip-fit master link, to divide the tensile strength by 9 to get a working load figure.
