1-800-263-3602
| Niagara Fasteners Inc. |
1-800-263-3602 |
|
|
|
Hex Head & Structural Bolt Specifications
| Ident. Grade Mark | Specs | Nominal Size Range (Inches) | Ultimate Tensile Min. PSI | Yield Strength Min. PSI | Elongation Min. % | Reduction of Area Min.% | Hardness | |
| Min. | Max. | |||||||
 |
ASTM A490 | 5/8" to 1-1/2" | 150,000 to 170,000 | 130,000 | 14 | 40 | 33HRC | 38HRC |
 |
SAE Grade 8 | 1/4" to 1-1/2" | 150,000 | 130,000 | 12 | 35 | 33HRC | 39HRC |
 |
ASTM A354BD | 1/4" to 2-1/2" | 150,000 | 130,000 | 14 | 40 | 33HRC | 39HRC |
| Over 2-1/2" | 140,000 | 115,000 | 14 | 40 | 31HRC | 39HRC | ||
 |
ASTM A325 | 1/4" to 1" | 120,000 | 92,000 | 14 | 35 | 25HRC | 34HRC |
| 1-1/8" to 1-1/2" | 105,000 | 81,000 | 14 | 35 | 19HRC | 30HRC | ||
 |
SAE Grade 5 | 1/4" to 1" | 120,000 | 92,000 | 14 | 35 | 25HRC | 34HRC |
| 1-1/8" to 1-1/2" | 105,000 | 81,000 | 14 | 35 | 19HRC | 31HRC | ||
 |
ASTM A449 | 1/4" to 1" | 120,000 | 92,000 | 14 | 35 | 25HRC | 34HRC |
| 1-1/8" to 1-1/2" | 105,000 | 81,000 | 14 | 35 | 19HRC | 30HRC | ||
| 1-5/8" to 3" | 90,000 | 58,000 | 14 | 35 | 183BHN | 235BHN | ||
 |
ASTM A193-B7 | 1/4 to 2-1/2" | 125,000 | 105,000 | 16 | 50 | N/A | 35HRC |
| 2-3/4" to 4" | 115,000 | 95,000 | 16 | 50 | N/A | 33HRC | ||
 |
ASTM A354-BC | 1/4" to 2-1/2" | 125,000 | 109,000 | 16 | 50 | 26HRC | 36HRC |
| Over 2-1/2" | 115,000 | 99,000 | 16 | 45 | 22HRC | 33HRC | ||
 |
ASTM A307B | 1-1/8" to 2" | 60,000 to 100,000 | N/A | 18 | N/A | 69HRB | 100HRB |