ASTM A194 Grade 16 Nuts
Boltport Fasteners is a manufacturer and supplier of high tensile A194 Grade 16 Hex Nuts and Heavy Hex Nuts in India. ASTM A194 Grade 16 Nuts are used with ASTM A193 Grade B16 Bolts, Hex Bolts, Stud Bolts, etc. A194 Gr b16 nuts can be hot forged, cold forged or machined from bar stock. Hex nuts are available in both metric and imperial sizes.
Find information on A194 Grade 16 chemical composition, heat treatment, hardness requirement, proof load for metric and imperial nuts, surface coatings and nut dimension standards
For quick quotation on A194 Grade 16 Nuts, please send us enquiry on info@boltport.com
Chemical Composition for ASTM A194 Grade 16 Nuts
| Elements | Range | Product Variation, Over or UnderB |
| Carbon | 0.36 - 0.47 % | 0.02 |
| Manganese, max | 0.45 - 0.70 % | 0.03 |
| Phosphorus, max | 0.035 % | 0.005 over |
| Sulfur, max | 0.040 % | 0.005 over |
| Silicon | 0.15 - 0.35 % | 0.02 |
| Chromium | 0.80 - 1.15 % | 0.05 |
| Molybdenum | 0.50 - 0.65 % | 0.03 |
| Vanadium | 0.25 - 0.35 % | 0.03 |
| Aluminium, max | 0.015 % | ... |
Heat Treatment for ASTM A194 Grade 16 Nuts
ASTM A194 Grade 16 Nuts shall be heated to a temperature range from 1700 to 1750 °F (925 to 955 °C) and oil quenched.
Hardness Requirement for ASTM A194 Grade 16 Nuts
| Brinell Hardness | Rockwell Hardness C | Rockwell Hardness B |
| 650 | 860 | 725 |
Proof Load Requirement for ASTM A194 Grade 16 Nuts (Inch)
| Nominal Size, Inch | Threads per Inch | Stress Area Inch² | Heavy Hex Nuts (lbf) | Hex Nuts (lbf) |
| 1/4 | 20 | 0.0316 | 5 570 | 4 470 |
| 5/16 | 18 | 0.0524 | 9 170 | 7 860 |
| 3/8 | 16 | 0.0774 | 13 560 | 11 620 |
| 7/16 | 14 | 0.1063 | 18 600 | 15 940 |
| 1/2 | 13 | 0.1419 | 24 830 | 21 280 |
| 9/16 | 12 | 0.182 | 31 850 | 27 300 |
| 5/8 | 11 | 0.226 | 39 550 | 33 900 |
| 3/4 | 10 | 0.334 | 58 450 | 50 100 |
| 7/8 | 9 | 0.462 | 80 850 | 69 300 |
| 1 | 8 | 0.606 | 106 000 | 90 900 |
| 1 1/8 | 8 | 0.790 | 138 200 | 118 500 |
| 1 1/4 | 8 | 1.000 | 175 000 | 150 000 |
| 1 3/8 | 8 | 1.233 | 215 800 | 185 000 |
| 1 1/2 | 8 | 1.492 | 261 100 | 223 800 |
Proof Load Requirement for ASTM A194 Grade 16 Nuts (Metric)
| Nominal Size, mm | Threads Pitch | Stress Area mm² | Heavy Hex Nuts (kN) | Hex Nuts (kN) |
| M6 | 1.0 | 20.1 | 29.2 | 20.8 |
| M8 | 1.25 | 36.6 | 44.1 | 37.9 |
| M10 | 1.5 | 58.0 | 69.9 | 60.0 |
| M12 | 1.75 | 84.3 | 101.6 | 87.3 |
| M14 | 2.0 | 84.3 | 138.6 | 119.0 |
| M16 | 2.0 | 115.0 | 189.2 | 162.5 |
| M20 | 2.5 | 245.0 | 295.2 | 253.6 |
| M22 | 2.5 | 303.0 | 365.1 | 313.6 |
| M24 | 3.0 | 353.0 | 425.4 | 365.4 |
| M27 | 3.0 | 459.0 | 553.4 | 475.1 |
| M30 | 3.5 | 561.0 | 676.0 | 580.6 |
| M36 | 4.0 | 817.0 | 984.5 | 845.6 |