Knurled Thumb Nut - Material: carbon steel, plastic - Type: Non-perforated with handle - Thread diameter: M5 / M6 / M8 - Thread length: 20 / 25 / 35 mm - Head shape: black, six petals Benefits - Hand tightening for quick, tool-free installation and removal - Knurled grip reduces slip in oil, dust, or moist conditions - Durable carbon steel body with plastic elements for smooth operation and reduced marring - Six petal head design provides an ergonomic and easily oriented grip Applications - Fast mounting of panels, enclosures, and fixtures in machinery and equipment that require frequent adjustments - Ideal for DIY projects, hobby machinery, and workshop fixtures where tools are not readily available - Suitable for space-constrained assemblies that need quick hand-adjustment without special tools