Product Name: 8.8 grade galvanized outer hexagonal bolt
Material: Carbon steel galvanizing
Head type: outer hexagon
Surface treatment: blue white zinc plating
Specification: M4 M5 M6 M8 M10
Product strength: Grade 8.8
Thread Length: 6mm-80mm
Dimension: m4x20 means thread diameter (d) = 4mm, thread length (L) = 20mm (excluding head length)
Quantity:2/5/10/20/30/50pcs
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