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Suzhou Enchao Fastener Co.,Ltd.
苏州恩超紧固件有限公司
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(JB /ZQ 4447 - 1997)
material
Carbon steel
grade, rigidity
grade 8.8
Coating
black oxide coating
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Similar Products
GB 1155 - 1989
DIN 906 - 2020
DIN 906 - 2012
DIN 906 - 1992
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Q 619
JB /ZQ 4179 - 2006
JB /ZQ 4446 - 2006
JB /ZQ 4447 - 2006
JB /ZQ 4446 - 1997
SAE J 531 (130109G) - 2020
SAE J 531 (130109N) - 2020
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QC /T 378 - 2013
QC /T 377 - 1999
