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Hexagon socket head cap screw DIN 912 Steel Zinc plated yellow passivated 8.807170
Hexagon socket countersunk head screw ISO 10642 Aluminium P40 M4X1645008.040.016
Hexagon socket head cap screw UNC 1936 series ASME B18.3 Alloy steel ASTM A574 Mechanical zinc plated 1/4X3/8 ft07260.063.009