Bolt SizeTension Stength

Yield Strength

EnlogationBolt

Length

in. ksi ksi % in. Brinell Rockwell C

1/2-1 120min 92min 14min ＜2*D 253-319 25-34HRC

1-1/8~1-1/2 105min 81min 14min ≥2*D 319max 34max

1/2-1 120min 92min 14min ＜3*D 223-286 19-30HRC

1-1/8~1-1/2 105min 81min 14min ≥3*D 286max 30max

1/2-1 120min 92min 14min ＜3*D 223-286 19-30HRC

1-1/8~1-1/2 105min 81min 14min ≥3*D 286max 30max

ASTM A325M

M (metric size)

ASTM A325T

T (full thread)

Head MarkingHardness

ASTM A325 Mechanical properties and Head marking

ASTM A325

Grade

type1

Standard for Bolt