ASTM A194 8M Grade is manufactured from AISI 316 (UNS S31600) stainless steel, by either forging by hot or cold method or machine from conditioned bar, in a carbide solution treated condition for corrosive resistant applications.
Manufactured to ASTM A194 standard specification, LoneStar Fasteners Europe can also offer with supplementary requirements of the standard as required by the application.
ASTM A194 8M: 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 8M: 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″ |
Chemical Composition
| Carbon | 0.08 | % Max |
| Manganese | 2 | % Max |
| Phosphorus | 0.045 | % Max |
| Sulphur | 0.03 | % Max |
| Silicon | 1 | % Max |
| Chromium | 16-18 | % |
| Nickel | 10-14 | % |
| Molybdenum | 2-3 | % |
| Copper | – | … |
| Niobium | – | … |
| Titanium | – | … |
| Vanadium | – | … |
| Aluminium | – | … |
| Nitrogen | – | … |
Mechanical Properties
| Proof Load | Hardness | Hardness, max | Hardness, min | |
| Up to 4” Inc. | ASTM A194 Table 3 + 4 |
126-300 HB | 32 HRC | 60 HRB |
Similar or Equivalent Standards
| AISI 316 |
| AFNOR Z6 CND 17.11 |
| DIN X5 CrNi 18.09 |
| B.S. 1506-845 |
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