Mating component references
Bolt, nut and
washer pairings.
| Bolt | Nut | Washer |
|---|---|---|
| A193 B5 | A194 Grade 3 | A36 mild steel |
| A193 B6 | A194 Grade 6 | A240 Grade 410 |
| A193 B7 | A194 Grade 2H | F436 Type 1 |
| A193 B7M | A194 Grade 2HM | F436 Type 1 |
| A193 B16 | A194 Grade 16 | F436 Type 1 |
| A193 B8 | A194 Grade 8 | A240 Grade 304 |
| A193 B8M | A194 Grade 8M | A240 Grade 316 |
| A193 B8T | A194 Grade 8T | A240 Grade 321 |
Chemistry / selected grades
Composition
references.
| Grade | Carbon | Manganese | Chromium | Equivalent / note |
|---|---|---|---|---|
| B5 | 0.10 max | 1.00 max | 4.00-6.00 | AISI 501 |
| B6 | 0.15 max | 1.00 max | 11.50-13.50 | AISI 410 |
| B7 | 0.37-0.49 | 0.65-1.00 | 0.75-1.20 | AISI 4140 / En-19 |
| B16 | 0.36-0.47 | 0.45-0.70 | 0.80-1.15 | 45CrMoV67 |
| B8 | 0.08 max | 2.00 max | 18.00-20.00 Cr | AISI 304 |
| B8M | 0.08 max | 2.00 max | 16.00-18.00 Cr | AISI 316 |
| B8T | 0.08 max | 2.00 max | 17.00-19.00 Cr | AISI 321 |
Selected composition references from the supplied catalogue. Consult the current edition for complete limits.
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