Black Oxide Hex Socket Cap Bolt

• Material: Carbon steel grade 4.8, 8.8, 10.9, 12.9
• Size: M3~M100
• Standard: DIN912
• Other surface treatment is available
• Product description: Black Oxide Hex Socket Cap Bolt is from Fast Hardware Electronic Co., Limited which is a professional black oxide hex socket bolt, black oxide hex socket cap bolt, black oxide hex cap bolt, black oxid
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