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5/16"
3-1/2"
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ASTM A307
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5/16"-18 x 3-1/2" UNC Gr.2 Hex Bolt PLTD
# 002.031.0350
5/16"-18 x 3-1/2" UNC Gr.2 Hex Bolt
# 001.031.0350
5/16"-18 x 3-1/2" UNC Carriage Bolt HDG
# 030.031.0350
5/16"-18 x 3-1/2" UNC Gr.2 Hex Bolt HDG
# 003.031.0350
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