GB897-88 stud bm = 1d

Standard classification: size standard standard system: national standard (GB) shape classification: stud details: mechanical performance grade steel has 4.8 grade, 5.8 grade, 6.8 grade, 8.8 grade, 10.9 grade, 12.9 grade; Stainless steel has A2-50 and A2-70. Can be used 40Cr,35CrMoA,45#,304 and other materials to make the stud. Double-end stud with thread diameter M12 ~ M48,bm = 1d.

Standard Classification:

Size Standard

standard system:

National Standard(GB)

Shape classification:

Stud

Detailed Description:

Mechanical properties of grade steel are4.8Class,5.8Class,6.8Class,8.8Class,10.9Class,12.9Grade; stainless steel hasA2-50,A2-70

Can be adopted40Cr,35CrMoA,45#,304Materials such as manufacturing studs.

Thread diameter isM12~M48, bm=1dof the double-headed studs.