A4-80 hexagon head external hexagon bolt
The material of A4-80 bolt is 316 stainless steel, and "A4-80" is a common identification in stainless steel fastener products.
The meanings of each character in A4-80 bolt:
1. A (A) - represents austenite.
2. 4- represents the fourth material, which is stainless steel 316.
3. 80- represents strength grade, which is 800MPa.
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