Reliable SK261 Lower Knife Locking Screw for Siruba Overlock

Keep your industrial edge-trimming assembly perfectly aligned with the premium SK261 Lower Knife Screw. Specifically manufactured to original factory dimensions, this replacement screw provides the exact thread pitch and gripping power needed to clamp the lower blade firmly against the knife holder.

Prevent Blade Slippage & Fabric Snagging

A loose or stripped knife screw is a common cause of poor cutting performance on an overlock line. If the lower knife shifts even a fraction of a millimeter, it results in chewed edges, ragged seams, or jammed fabric. Replacing a worn screw with a fresh SK261 fastener ensures maximum clamping torque, eliminating blade vibration at peak factory speeds.