Countersunk Washer, Material Grade/Class 316, Material Stainless Steel, Finish Plain, For Screw Size M4, Maximum Inside Diameter 4.3 mm, Outside Diameter 16 mm, Countersink Angle 90 Degrees , Overall Height 3 mm, System of Measurement Metric, Made in North America Made in North America, Material Quality Standards ASTM A276, Pack Size Bulk Pack, Resistance Properties Acid-Resistant, Alkaline-Resistant, Chloride-Resistant, Corrosion-Resistant, Salt Water-Resistant, Tensile Strength 75,000 psi
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