ASTM A194 Grade 2HM nuts are carbon steel, high tensile nuts used predominantly in the oil, gas and petrochemical industries, used in conjunction with ASTM A193 B7M studs or head fasteners.
100% hardness checked, achieving a Brinell hardness of 159 to 235. These nuts are tempered or stress relieved after machining making them suitable for use in environments which ASTM A194 2H are not.
LoneStar Fasteners Europe stock hold various options of ASTM A194 2HM Nuts offering a standard product, or with the supplementary requirement of ASTM A194 or bespoke manufactured to the additional requirement of API 20E BSL 1, 2 and 3.
ASTM A194 2HM: Forms
| LoneStar Manufacture | ||
| Imperial Nuts – Heavy and Normal Series – Including ANSI B18.2.2 | ✓ | |
| Metric Nuts – Regular and High types – Including DIN 934 H=D, ISO | ✓ | |
| Available with locking features | ✓ |
ASTM A194 2HM: Sizes and Threads
| LoneStar Manufacture | ||
| Metric Coarse | ✓ | |
| Metric Fine | ✓ | |
| Imperial UNC | ✓ | |
| Imperial 8UN | ✓ | |
| Imperial UNF | ✓ | |
| ACME | ✓ | |
| Metric sizes available | Up to M100 | |
| Imperial sizes available | Up to 4.00″ |
ASTM A194 2HM: Chemical Composition
| Carbon | 0.40 | % Min |
| Manganese | 1.00 | % Max |
| Phosphorus | 0.040 | % Max |
| Sulphur | 0.05 | % Max |
| Silicon | 0.40 | % Max |
| Chromium | – | … |
| Nickel | – | … |
| Molybdenum | – | … |
| Copper | – | … |
| Niobium | – | … |
| Titanium | – | … |
| Vanadium | – | … |
| Aluminium | – | … |
| Nitrogen | – | … |
ASTM A194 2HM: Mechanical Properties
| Proof Load | Hardness | Hardness | |
| Up to 4” Inc. | ASTM A194 Table 3 + 4 |
159-235HB | 84 – 99 HRB |
Similar or Equivalent Standards
| AFNOR CC45 |
| DIN C45 |
| B.S 1506-162 |
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