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Introduction To Threaded Studs

Jan 16, 2021

The thread size and tolerance, and the chamfering requirements at both ends are in accordance with GB/T 901.


The specifications and materials of the fully threaded studs are as specified in the table.


standard

specification

material

HG/T 20613 (full thread stud)

M10,M12,M16,M20,M24,M27,M30,M33,M36×3,M39×3,M45×3,M52×4,M56×4

35CrMo,42CrMo,25Cr2MoV,0Cr18Ni9,0Cr17Ni12Mo2,A193,B8 CL2,A193,B8M CL2,A320,L7,A453,660

standard

specification

material

HG/T 20634 (full thread stud)

M14,M16,M20,M24,M27,M30,M33,M36×3,M39×3,M42×3,M45×3,M48×3,M52×3,M56×3,M64×3,M70×3,M76×3,M82×3,M90×3

35CrMo,42CrMo,25Cr2MoV,0Cr18Ni9,0Cr17Ni12Mo2,AL93B8CL2,AL93,B8M CL2,A320,L7b,A453,660


In GB/T15389-1994, the pitch is different from this, as follows:


standard

specification

GB/T 15389-1994 (screw)

M4M5M6M8×1M10×1,(M10×1.25)M12×1,.5,(M12×1.25)(M14X1.5)M16X1.5(M18X1.5)M20X1.5(M22X1.5)M24X2(M27X2)M30X2(M33X2)M36X3(M39X3)M42X3