Description:

973500184 Washer M4 Helical Lock Din 1 Suitable For Cutter Spare  

1. The M4 specification results in an inner diameter slightly larger than 4mm, allowing it to fit tightly with M4 screws in the cutting bed and snugly wrap around the screw shank. Its outer diameter is generally small, making it suitable for connection parts with compact spaces in the cutting bed and preventing interference with surrounding components.

2. When the screw is tightened, the washer is compressed and flattened. It can evenly transfer the pressure from the screw head to the surface of the connected part, preventing thin metal plates, plastic parts, etc. in the cutting bed from being deformed or damaged due to excessive local stress. At the same time, it increases the contact area, further enhancing the anti-loosening effect.

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