Honestly I would email us at techsales@opticsplanet.com with some pictures so we can help you out more in detail. But, if the adapter is tight to the barrel, it shouldn't matter if there's still threads visible.
According to KNS, the adapter dimensions is 6 × 5 × 1.5 in.
The KNS Precision AK Thread Muzzle Device Adapter weighs 0.2 lbs and its dimensions are 6 × 5 × 1.5 in.
The KNS Precision AK Thread Muzzle Device Adapter is not compatible with your ZPAP M92 as it uses M26x1.5LH threads instead of M14x1LH threads.
Yes, the inner threads of the KNS Precision AK Thread Muzzle Device Adapter are M14X1LH, which is compatible with your VSKA, and will convert it to be 5/8x24.
Yes. The KNS Precision AK Thread Muzzle Device Adapter will fit your Zastava's M14x1 LH threads and convert it to be 5/8x24.
KNS Precision does not provide a torque spec for their AK Thread Muzzle Device Adapter. Using a 17mm wrench, tighten the adapter to the barrel, you shouldn't have issues with the adapter coming loose.
Yes, this adapter mounts to M14x1 LH threads. It will not mount to a smooth barrel.
No, unfortunately it will not.
Yes technically, this adapts your metric 7.6239 AK barrel to the standard 7.62 thread pitch for muzzle devices and suppressors.