ASTM A194 2H Nuts are Carbon Steel, high tensile nuts used predominantly in the oil, gas, and petrochemical industries. Used in conjunction with ASTM A193 Grade B7 studs or head fasteners, normally manufactured to ANSI B18.2.2 in a heavy form. The product is manufactured either by hot or cold forging or for critical applications machined from conditioned bar stock.
LoneStar Fasteners Europe stock holds various options on ASTM A194 2H Nuts offering standard products or with the supplementary requirements of ASTM A194 or bespoke manufactured the additional requirements of API 20E BSL 1, 2 and 3.
ASTM A194 2H: 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 2H: 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 2H: 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 | – | … |
Mechanical Properties
| Proof Load | Hardness Max | |
| Up to 1 ½” (M36) | ASTM A194 Tables 3 + 4 | 248 – 327 HB |
| Over 1 ½” (M36) | N/A | 248 – 327 HB |
Similar or Equivalent Standards
| AFNOR CC45 |
| DIN C45 |
| B.S 1506-162 |
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