RS PRO Black Multiple Lobes Clamping Knob M5 Threaded Through Hole, 28 mm Diameter 188-3439

RS PRO 188-3439 Multiple Lobes Clamping Knob M5 is a high-quality mechanical component designed for various industrial, laboratory, and manufacturing applications where secure fastening and ergonomic handling are essential.

This clamping knob features a multiple lobes shape that provides superior grip and ease of use, particularly in assembly lines, machine setups, and equipment adjustments. The black knob is manufactured using a two-part moulding process combining polypropylene for strength and soft-touch TPE-39 for enhanced user comfort.

The knob diameter is 28 mm, suitable for fitting in limited spaces, and the M5 threaded through-hole mount allows for secure and reliable fastening. The brass insert material enhances durability and offers resistance against corrosion and wear.

Key mechanical properties include a tensile strength of 11 MPa, tear strength of 30 kN/m, and a density of 1160 kg/m³, ensuring the knob withstands demanding operational stresses. It also provides excellent flame retardant and electrical resistivity capabilities, complying with safety standards such as UL 94.

The knob’s low water absorption rate (0.05%) and high abrasion resistance (190 mm³) contribute to extended service life and performance stability even in challenging environments. Moulding shrinkage is controlled at 1.8% with an elongation at break of 470%, indicating good material toughness and flexibility.

The knob’s ergonomic multiple lobes shape improves operator efficiency and reduces hand fatigue during repetitive adjustments. The robust brass insert and threaded mount secure the knob firmly to equipment or machinery. Its flame retardant and electrical insulating properties enhance safety in electrically sensitive areas.

Resistance to abrasion and moisture ensures durability in industrial atmospheres. Suitable for use in heavy machinery, laboratory instrumentation, fluid power tools, and manufacturing equipment setups.

Manufactured in China, this product adheres to high-quality standards expected in engineering materials and industrial hardware. It is ideal for professionals seeking a reliable and ergonomic clamping solution.

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