Inside door catch with a locking mechanism 1 3/4"

Hello,

Take a look and compare the specifications of the 40-117 inside latch to your part. We'll include the dimensions from our product page below. Thanks for posting! 

Underside view of 40-117

Alternate image for 40-117

Underside view of 40-117

Unfortunately, we do not carry an inside latch that will accommodate a 1/8" spindle but you could consider using something like the 40-177 or 40-130, which come with inside and outside handles. We can't make any guarantees but review the specifications of both options to see if you could adapt one of them to work for your application.