100 Pcs M3-0.5 Hex Flange Nuts, 304 Stainless Stee (A2-70), DIN 6923 Smooth Bottom (Non-Serrated) with Integrated Washer, for 3D Printers, Fairings & Oversized Holes

Protect Your Projects with Non-Serrated Flange Nuts Standard flange nuts often come with aggressive serrations (teeth) on the bottom designed to lock into the material. While useful for vibration, these teeth cause irreversible damage to painted surfaces, soft plastics, and polished metals. Fayeploo Smooth Bottom DIN6923 Flange Nuts are the professional solution when you need secure fastening WITHOUT the scratches. Why Choose Smooth (Non-Serrated)? 1. Surface Protection: The flat bottom glides tight against the surface, preserving your paint job or anodized coating. Essential for automotive bodywork and 3D printer assembly. 2. Integrated Washer: The wide flange base distributes the load evenly, making it perfect for bridging oversized holes or slots. 3. Consistent Torque: Without teeth digging in, you get a more predictable torque reading during installation. Material & Finish Guide: * Silver (Natural): 304 Stainless Steel (A2-70). Passivated for a bright, shiny finish. Best for general use. * Black (Electrophoretic): 304 Stainless Steel base with a chemical black coating. Not painted! This ensures threads remain clean and the nut won't chip easily. Best for stealth builds, motorcycles, and dark furniture. Specifications: * Size: M3 x 0.5mm (Coarse Thread) * Standard: DIN 6923 (Modified Smooth Type) * Material: 304 Stainless Steel (18-8) * Hex Size: 5.5mm Package Includes: 100 x M3 Smooth Flange Nuts (Choose your color)

• SURFACE-SAFE SMOOTH BOTTOM (NO TEETH) – Unlike standard serrated flange nuts that dig into and scratch your workpiece, our DIN6923 nuts feature a smooth, flat bearing surface. Ideal for securing painted parts, 3D printed plastic, aluminum extrusions, and automotive fairings without damaging the finish
• PREMIUM A2-70 304 STAINLESS STEEL – Manufactured from high-grade 18-8 (304) Stainless Steel with an A2-70 strength rating. Whether you choose the Classic Bright Finish or the Stealth Black, they offer exceptional corrosion resistance, perfect for outdoor use or humid environments where ordinary steel would rust
• INTEGRATED WASHER DESIGN – The wide flange acts as a built-in washer, distributing clamping pressure over a larger area. This is critical for covering oversized or irregular holes and preventing pull-through on soft materials like wood or plastic. No separate washer needed
• DURABLE FINISH OPTIONS – Available in two finishes to match your project aesthetics. The Silver/Plain offers a clean, industrial look; The Black version uses Electrophoretic Coating, which is thinner and more durable than paint, ensuring smooth thread engagement without clogging
• STANDARD DIN6923 SPECIFICATIONS – M3-0.5 Coarse Thread; Hex Drive Size: 5.5mm. Precision-machined threads ensure a smooth fit with standard M3 bolts and screws. A must-have for drone builds, furniture assembly, and engine bay detailing