Set screw M4x16 DIN551
✔️ Type: set screw (set screw)
✔️ Standard: DIN 551 – grub screw with flat point, straight slot (equivalent to ISO 4766 / PN 82272)
✔️ Thread: metric M4, full thread along the entire length of the shank
✔️ Length: 16 mm
✔️ Shape: headless, notch for flat screwdriver
✔️ End: flat point – for pressing against a flat surface surface
✔️ Material: steel
✅ Clamping and locking elements on shafts – gears, bushings, rings, clutches, levers, etc.
✅ Securing pulleys, hubs and bearings against displacement on the shaft
✅ Adjustment connections – easy tightening or loosening when adjusting the mechanism
✅ Applications in agricultural and industrial machines, gears and drives as practical workshop standard
➡ M4X16 DIN551
✅ M4x16 DIN 551 set screw – a standard part for locking elements on the shaft, useful in every workshop and machine service
✅ No head – after screwing in, the screw does not protrude above the surface of the element (e.g. hub, sleeve), so it does not interfere with other parts and allows for a compact system installation
✅ The slot for a flat screwdriver enables quick assembly and adjustment using a standard screwdriver – no special keys required
✅ The flat point ensures even pressure on the flat surface of the shaft or element – minimizes the risk of cutting into the material and damaging the shaft compared to a tapered point
✅ Full thread along the entire length allows for free adjustment of the screw-in depth and reliable pressure in various thicknesses of walls, sleeves or hubs
✅ It works well as an adjustment element – suitable for both permanent locking connections and points where periodic adjustment or service is required during operation. See also other DIN551 set screws available in our offer.