Alloy Steel thread rod Tee Wing Knobs Thumb Screw Standard Male Thread Plastic T Knobs Handles Hand Clamping Knobs Grip Thumbscrew Black head

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1.Superior Mechanical Performance
The threaded rod is made from quenched-and-tempered alloy steel, delivering tensile strength ≥900 MPa and yield strength ≥750 MPa with a core hardness of 35–42 HRC. It’s finished in black-oxide for moderate corrosion resistance and smooth thread engagement. The T-knob is molded from glass-fiber–reinforced nylon for high impact resistance, dimensional stability, and long service life.

2.Versatile Application Range
These hand-clamping knobs excel wherever frequent, tool-free adjustments are needed: machine tool fixtures, jigs and fixtures, woodworking equipment, laboratory instruments, 3D printers, photography rigs, and furniture assemblies. The standard M6 thread ensures compatibility with metric frames, panels, and accessories.

3.Effortless, Tool-Free Operation
The ergonomic T-handle profile provides a secure finger-grip for rapid tightening up to 8–10 Nm of torque without tools, allowing quick clamp-and-release actions. Textured knobs prevent slippage even under oily or gloved conditions, while the steel rod’s precision threads minimize backlash for repeatable positioning.

4.Premium Quality & Durability
Manufactured in ISO 9001–certified facilities to DIN 4120 tolerances (±0.1 mm), each lot undergoes thread-geometry inspection, torque testing (≥1 000 cycles), and finish-thickness measurement (≥5 µm). The nylon knobs are UV- and chemical-resistant, and full material traceability plus RoHS compliance ensure consistent, long-lasting performance.