ASTM A194 Grade 2HM
These ASTM A194 Grade 2HM Heavy Hex Nuts are produced from carbon steel (0.40 % C min), liquid quenched and tempered at 1150 °F [620 °C] minimum, with a hardness of 159 to 235 HB (ASTM A194/A194M-20a, Tables 1 and 2). We Produce these heavy hex nuts in various sizes
| Grade | Description |
|---|---|
| 2HM | Quenched & tempered carbon steel heavy hex nuts |
Mechanical Properties
Nut -Grade Identification Markings
All markings shown for all grades of A194 are for cold formed and for hot forged nuts. When nuts are machined from bar stock, the nut must additionally be marked with the letter "B"
| Grade Identification Markings | Specification | Material | Nominal Size, In. | Tempering Temp. °F | Proof Load Stress, ksi | Hardness Rockwell | See Note | |
|---|---|---|---|---|---|---|---|---|
| Min | Max | |||||||
| ASTM A194 Grade 2HM | Medium Carbon Steel, Quenched and Tempered | 1/4 - 4 | 1000 | 150 | 159 | 237 | 1,2,3 | |