MDSRFN3SS - MDSRFN4SS - MDSRFN5CLZ - MDSRFN4CLZ - MDSRFN3CLZ - MDSRFN4BLKSS - MDSRFN5BLKSS - Metric DIN Serrated Flange Nuts | Self-Locking Flange Fasteners - Find 3D CAD