Good Day Alina & Sophia,
We can accept EITHER style serration but I believe most factories are producing in Forward-Locking serrations. Honestly, our customers probably do not know the difference between the 2 types of serration. Forward-Locking serrations as per the drawing are okay for us.
Can Katsuhana Fasteners Corp. produce parts identical (except for serration) to our counter samples (i.e. dimensions & coating quality) ???