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US Fasteners
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1/2"-13
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Product Catalog
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Hex bolts
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Tap bolts
Zinc plated grade 2 steel
Resources
US Hex bolt diameters
US thread per inch table
Head/Wrench size
Tap bolt diameter is measured on the outside of the threads.
Diameter and Thread count
Coarse (standard) thread
1/4"-20
5/16"-18
3/8"-16
1/2"-13
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