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Tension Stength
Single shear strength through
threads
Single shear strength through
bodyHardness
ksi ksi ksi Rockwell HRB
TypeO 74 55.2 45.88 80-100
Type1 120 74.4 74.4 25-34
Type3 120 74.4 74.4 25-34
ASTM A394 Mechanical Properties and Head Marking
ASTM A394
Standard for Bolt
Grade Head Marking