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400pcs) DIN 7991 M3X50 Hexagon Socket Countersunk Head Screws, Fullthread A4 Stainless Steel, Ships Free in USA by Aspen Fasteners, ASSP799143-50: Amazon.com: Industrial & Scientific
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TOOLCRAFT 401634 Countersunk Screws M3 20 mm Hex Socket DIN 7991 ISO 10642 Stainless Steel Pack of 100: Amazon.com: Industrial & Scientific
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