Self-locking M3 hexagonal nut with polyamide insert that prevents the nut from unscrewing. A4 stainless steel DIN 985 ISO 10511 Steel: grade: 6/8 Coating: electro-galvanized A pack of 10 pcs. https://elecena.pl/product/22620444/m3-nylock-hex-self-locking-nuts-10-pcs 2023-02-22 https://elecena.pl/product/22620444/m3-nylock-hex-self-locking-nuts-10-pcs 2023-03-10 https://elecena.pl/product/22620444/m3-nylock-hex-self-locking-nuts-10-pcs 2025-10-25 https://elecena.pl/product/22620444/m3-nylock-hex-self-locking-nuts-10-pcs 2025-10-29