M18 spring lock washer (split helical type) that prevents loosening due to heavy vibration, standard safety part on Knegt compact tractors for high-load connections such as rear wheel bolts, axle housing bolts, drawbar support and heavy loader mounting brackets.
Size: M18 (inner Ø ≈ 18.2 mm)
Type: Split spring lock washer
Standard: DIN 127B or GB/T 93-1987
Material: Spring steel, hardened and tempered
Finish: Zinc plated
Compatible with all Knegt models (especially 404G2, 504G3, 804 and larger series)
Typical uses: rear wheel bolts, final drive/axle housing bolts, drawbar bracket, heavy toplink pins, counterweight mounting