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Heavy Hex
1-1/8"
4-1/2"
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THREAD
PITCH
8 TPI
Coarse
7
8
GRADE
STANDARD
Grade B
Grade B7
ASTM A193
ASTM A307
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1-1/8"-7 x 4-1/2" UNC A307 Gr.B HVY Hex Bolt
# 028.112.0450
1-1/8"-8 x 4-1/2" (8-UN) A193 B7 HVY Hex Bolt
# 022.112.0450
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Heavy Hex