Grade 2, unlike grade 5 and grade 8, has become an industry term to refer to low carbon fasteners. Most low carbon fasteners manufactured today are actually A307. A307 bolts are similar to grade 2 but have slightly less tensile strength in larger diameters. When we mark an item as "Grade 2" it might be an A307 or a grade 2 depending on the manufacture. If you have an application where tensile strength is an issue please see our Grade 5 and Grade 8 fasteners.
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Hex Bolt* |
Hex Nuts |
Stop/Lock Nuts |
Flat Washers | Lock Washers | ||
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1/4" (#14) | 1/4-20 | 1/4 | 1/4 | 1/4 | 1/4 |
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5/16" | 5/16-18 | 5/16 | 5/16 | 5/16 | 5/16 |
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3/8" | 3/8-16 | 3/8 | 3/8 | 3/8 | 3/8 |
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7/16" | 7/16-14 | 7/16 | 7/16 | 7/16 | 7/16 |
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1/2" | 1/2-13 | 1/2 | 1/2 | 1/2 | 1/2 |
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9/16" | 9/16-12 | 9/16 | 9/16 | 9/16 | 9/16 |
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5/8" | 5/8-11 | 5/8 | 5/8 | 5/8 | 5/8 |
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3/4" | 3/4-10 | 3/4 | 3/4 | 3/4 | 3/4 |
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7/8" | 7/8-9 | 7/8 | 7/8 | 7/8 | 7/8 |
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1" | 1-8 | 1" | 1" | 1" | 1" |
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1 1/8" | 1.125" | 1.125" | 1.125" | 1.125" | |
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1 1/4" | 1.25" | 1.25" | 1.25" | 1.25" | |
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1 1/2" | 1.5" | 1.5" | 1.5" | 1.5" | |
Hex Bolt* |
Hex Nuts |
Stop/Lock Nuts |
Flat Washers |
Lock Washers |
* Hex bolts and hex cap screws have become synonymous but technically a hex cap screw refers to a hex bolt with a thin fillet under its head and is machined with tighter tolerances. Our grade 2 bolts are hex bolts. If you need an actual cap screw please see our Stainless, Grade 5, and Grade 8 hex cap screws.