Product Description: Used to make various standard parts, bearings, tools and other industries used in cold heading, cold punching, cold pressing die. Main models: BD type (standard bolt upsetting die), BO-B type (three sequence top die), BS type (round shrinkage die), BF-B type (inner six square die) BM type (battery die), six square block die, etc. Main brand: YG20C YG22C

Standard upsetting die for bolts:

model	Basic dimensions
	D	d	H
BD type	7-86.	0.5-66.	8-35