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Wenzhou Jinjiu Fastener Co.,Ltd.
温州市金久紧固件有限公司
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15 Years
Main Products
Non-standard bolts
Large size fasteners
Double-ended bolts
T-bolts
Plug screw
Large nuts
Machine Screws
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(JB /ZQ 4321 - 1997)
material
Carbon steel
grade, rigidity
grade 4.8
Coating
electroplating
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Similar Products
DIN 3570 - 1968
JB /ZQ 4321 - 2006
HG /T 21629 (A1) - 2021
HG /T 21629 (A1-1) - 1999
HG /T 21629 (A1-2) - 1999
HG /T 21629 (A1-3) - 1999
HG /T 21629 (A2-1) - 1999
ASME B 18.31.5 (US) - 2011
