GB/T28-1988-Hex Head Screw Bolts with Holes for Reaming, Grades A and B

Standard Classification: Dimension Standard System: National Standard (GB) Appearance Classification: Bolt Details: Performance Grade 8.8; Can be made of 35#,45#,35CrMoA,40Cr and other materials; The thread specification is M6 ~ M48, and the product grade is grade a and grade B hexagon head screw with hole reaming bolts.

Standard Classification:

Size Standard

standard system:

National Standard(GB)

Shape classification:

Bolt

Detailed Description:

Performance level8.8Level;

Can be adopted35#,45#,35CrMoA,40CrManufacturing of other materials;

The thread specification isM6~M48, Product grade isALevel andBGrade hexagon head screw with holes for reaming holes.

 

 

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