Standar for Bolt Grade Bolt Size ...
Standar for Bolt | Grade | Bolt Size | Tension Stength | Yield Strength | Enlogation | Hardness | Head Marking | |
in. | ksi | ksi | % | Brinell | Rockwell C | |||
A490 | type1 | 1/2~1" | 150-173 | 130min | 14 | <2*D, HB 311-352;>2*D, HB…-352; | <2*D, 33-39;>2*D, HC…-39; |
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1~1-1/2" | 150-173 | 130min | 14 | <3*D,HB313-352;>3*D,HB…-352 | <2*D, 33-39;>2*D, HC…-39; | |||
type3 |
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