20 years professional hardware manufacturer - JM Hardware
Standar for Bolt
Grade
Tension Stength
Yield Strength
Enlogation
Length
Hardness
Head Marking
ksi
%
in.
Brinell
Rockwell B
A394(ASTM18.2.1)
typeO
74
80-100
type1
120
25-34
type3
xarella.huang@jm-fastener.com
Since our establishment in 2006, JM has been adhering to the mission of creating maximum value for customers by providing differentiated services, and making a positive contribution to the society.