# Buy stainless steel A2 one-way screw 4.2x19 mm at Autoservice ## Stainless steel A2 one-way screw DIN 7981 4.2x19 mm for secure fastening Fasteners / Screws / Security screws Self-tapping stainless steel A2 one-way screw 4.2x19 mm with pan head for secure fastening. ## Prices and stock - **SIN-RVSOO42-19**: € 11,88 incl. VAT — 188 in stock ## Order URL [Stainless steel A2 one-way screw DIN 7981 4.2x19 mm for secure fastening](https://www.auto-service.be/en/fasteners/screws/security-screws/stainless-steel-a2-one-way-screw-din7981-42x19-20pcs) ## Alternate URLs - **nl**: [Stainless steel A2 one-way screw DIN 7981 4.2x19 mm for secure fastening](https://www.auto-service.be/nl/bevestigingsmateriaal/schroeven/security-schroeven/rvs-a2-one-way-schroef-din7981-42x19-20st) - **fr**: [Stainless steel A2 one-way screw DIN 7981 4.2x19 mm for secure fastening](https://www.auto-service.be/fr/materiel-de-fixation/vis/vis-de-securite/vis-one-way-acier-inox-a2-din7981-42x19-20pcs) - **en**: [Stainless steel A2 one-way screw DIN 7981 4.2x19 mm for secure fastening](https://www.auto-service.be/en/fasteners/screws/security-screws/stainless-steel-a2-one-way-screw-din7981-42x19-20pcs) ## Images - ![Product image](https://www.auto-service.be/assets/media/9474/conversions/rvs-a2-one-way-schroef-din7981-42x19-20st-10772-optimized.jpg) ## Specifications - **Reference**: SIN-RVSOO42-19 - **Materiaal**: Staal - **Kleur**: Zilver - **Diameter ⌀**: 4.2 mm - **Lengte (product)**: 19 mm - **Normering**: DIN 7981C - **Soort kop**: Philipsdrive - **Aantal in verpakking**: 20 - **Material**: Steel - **Color**: Silver - **Length (product)**: 19 mm - **Standard**: DIN 7981C - **Head type**: Philipsdrive - **Quantity in packaging unit**: 20 ## Product description ### Secure fastening with one-way screws The stainless steel A2 one-way screw DIN 7981 4.2x19 mm is designed for applications where disassembly is undesirable. Thanks to its unique one-way drive, the screw can be easily screwed in, but cannot be unscrewed without special tools. This makes it ideal for situations where security and vandal resistance are crucial. ### High-quality materials and corrosion resistance Made from stainless steel (A2 quality), this screw offers excellent resistance to corrosion. This makes it suitable for both indoor and outdoor applications, even in damp or aggressive environments. The durability of the material guarantees a long lifespan and reliable performance. ### Technical specifications - **Diameter** : 4.2 mm - **Length** : 19 mm - **Head shape** : Pan head - **Drive** : One-way slot - **Material** : Stainless steel A2 - **Standard** : DIN 7981 ### Application areas These one-way screws are widely used in situations where security and permanent fastening are required. Some examples include: - Fastening license plates on cars - Mounting security cameras and systems - Installing public facilities such as traffic signs and street furniture ### Advantages of one-way screws - **Vandal resistant** : Difficult to remove without special tools, preventing unauthorized disassembly. - **Easy installation** : Can be screwed in with standard tools, but requires special tools for removal. - **Aesthetic** : The pan head ensures a neat finish without protruding parts. ### Installation tips When using one-way screws, it is important to ensure correct installation: - Use a suitable screwdriver or bit to avoid damaging the drive. - Make sure the material you are screwing into is suitable for self-tapping screws. - Tighten the screw firmly, but avoid excessive force to prevent damage. 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