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