ASTM A490
Standard specification for quenched and tempered, alloy steel, heavy hex structural bolts intended for structural connections and ranging in size from 1/2 in. to 1-1/2 in. diameter and a tensile strength of between 150 ksi and 173 ksi.
| Types |
|
| Type 1 |
Medium carbon and alloy steel |
| Type 2 |
Withdrawn in 2002 |
| Type 3 |
Weathering steel |
| M |
Metric A490 |
| SC |
Slip critical connection |
| N |
Bearing type connection with threads included in the shear plane |
| X |
Bearing type connection with threads excluded in the shear plane |
| Size |
Tensile ksi, min |
Yield, ksi, min |
Elong, %, min |
RA % min |
| 1/2 - 1-1/2 |
150-173 |
130 |
14 |
40 |
| Nuts |
|
Washers |
|
|
| Type 1 |
Type 3 |
Type 1 |
Type 3 |
|
| A5363DH |
A5363DH3 |
F436-1 |
F436-3 |
|
| Note: Nuts conforming to A194 Grade 2H are a suitable substitute for use with A490 heavy hex Structural Bolts |
|
|
|
|
| Notes: |
| 1. The bolts shall not be coated by hot-dip zinc coating, mechanical Deposition, or electroplating with zin or other metallic coatings due to the potential for hydrogen embrittlement |
| 2. Each sample represenative of the lot shall be magnetic particle inspected for longitudinal discontinuities and transverse cracks |
|
