HANSAN SCREW CO., LTD.

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HANSAN SCREW CO., LTD.

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Hex Head Bolt

Strength Type 8.8 10.9 12.9
Material Structural alloy steel 32~39 HRC 39~44 HRC
Hardness d≦16 22~32 HRC, d>16 22~34 HRC JIS 6g JIS 6g
Precision class JIS 6g JIS 6g JIS 6g
Surface treatment Black oxide coating Black oxide coating Black oxide coating

 

 

 

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