Our 304 (A2) Stainless Finish Countersunk Washers are crafted from high-quality 304 stainless steel, offering strong corrosion resistance for indoor/outdoor/humid environments. Their countersunk design fits flush with countersunk screws, ensuring a smooth, flat surface (avoids protrusions) while effectively distributing screw pressure to prevent workpiece damage and reduce friction during tightening. Ideal for furniture assembly, electronics enclosures, decorative fixtures, and precision machinery, they support customization of inner/outer diameters (matching M3–M20 screws) and thicknesses. Available in bulk/retail packs; all undergo dimensional accuracy checks, corrosion resistance testing, and flatness verification to meet industry standards.
| ①,In the standard text, φ119 corresponds to the dc minimum value of 188.15, but the corresponding deviation here should be 1.85 mm, that is, the actual minimum value is 200-1.85=198.15 mm. (In DIN 522, when h is less than 4 and the product grade is Class A, the dimensional tolerance of d2 is h15, and the corresponding deviation is 1.85 mm when dc is 200 mm). 1)steel , hardness class 140HV, hardness HV140-250;hardness class 200HV, hardness HV200-250; 2)stainless steel , hardness class 140HV, hardness HV140-250;hardness class 200HV, hardness HV200-250;material (steel group) A2 and A4, F1, C1 and C4 3)Washers may be made of non-ferrous metals or other materials, SUbject to agreemen 4)For h not exceeding 0,5 mm, the hardness shall be HV 2 and for h exceeding 0,5 mm, HV 10. |
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