ASTM A194 Grade 8S Specification
ASTM A194 Nuts Grades
ASTM A194 Grade 8S nuts are produced from the specialized alloy Nitronic 60, strictly adhering to the ASTM A194 specification. This fully austenitic material was originally engineered for extreme temperatures, performing reliably up to 1800°F. It delivers oxidation resistance comparable to Type 309 Stainless Steel and significantly superior resistance compared to Type 304 Stainless Steel. The unique inclusion of Silicon (Si) and Manganese (Mn) enhances the alloy’s matrix, providing resistance to wear, galling, and fretting even in the annealed state. Its fully austenitic structure is maintained even after severe cold working, which allows for the attainment of higher material strengths.
ASTM A194 Grade 8 Heavy Hex Nuts Manufacturer & Supplier
The team of Jade Alloys ensures that all their A194 8s nuts are manufactured to high standards as dictated by international standards. A194 8s nuts are manufactured as per standards such as, ASME B18. 2.2, EN, BS, ISO, and DIN. While general ASTM A194 grade 8 nut dimensions are guided by these specifications, exact details should be confirmed during the ordering process.
To buyers who want to have reliable sourcing and guaranteed quality, it does not go far to our company, Jade Alloys, a well-established ASTM A194 Grade 8S nuts manufacturer in India. We also have certified ASTM A194 Grade 8 heavy hex nuts available in a complete line of sizes, from M6 to M100, with a professional polish. We know that effective procurement plays a vital role, and this is the reason why we are encouraging our customers to contact us directly when arranging their material needs in order to have the competitive ASTM A194 8s nuts price.
Contact us today for all your ASTM Fasteners needs!
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Quick Section Links
- Types of ASTM A194 Grade 8S Nuts
- ASTM A194 Grade 8S Nuts Specifications
- ASME SA 194 Gr 8S Nut Chemical Composition
- Mechanical Properties of ASTM A194 Grade 8S Nuts
- ASTM A194 Grade 8S Proof Load (Inch Series)
- ASTM A194 Grade 8S Marking
- ASTM A194 Grade 8S Equivalent Grades
- ASTM A194 GR. 8S Nuts Size Chart
- ASTM A194 GR. 8S Heavy Hex Nuts Dimension
- ASTM A194 Grade 8S Nuts Inventory
- Available Stock of ASTM A194 8S Nuts
- Applications of ASTM A194 GR. 8S Nuts
Types Of ASTM A194 Grade 8S Nuts
ASTM A194 Grade 8S Acorn Nut
ASTM A194 Grade 8S Hex Nut
ASTM A194 Grade 8S Wing Nut
ASTM A194 Grade 8S Jam Nut
SA 194 Grade 8S Castle Nut
SA 194 Grade 8S T Nut
SA 194 Grade 8S Anti-Theft Nut
SA 194 Grade 8S Square Nut
ASTM A194 Grade 8S Heavy Hex Nut
ASTM A194 Grade 8S Nylock Nut
ASME SA194 Grade 8S Coupling Nut
ASME SA194 Grade 8S Eye Nut
ASTM A194 Grade 8S Nuts Specifications
| Category | Details |
| Size in Ready Stock | M6 to M50 |
| Threads Available | CBSF, UN, BSW, UNF |
| Process Method | Hot Forging, CNC Machining, Cold Forging |
| Characteristics | Excellent Resistance to Wear, High Strength, High Temperature Stability |
| Popular Testings | Tensile Test, Impact Test, Hardness Testing |
| Use For | Aerospace, Chemical Processing, Marine |
| Packaging | Custom, Wooden Cases, Carton Box |
| Raw Material Origin | German, Japanese, European |
ASME SA 194 Gr 8S Nut Chemical Composition
| Grade | Description and UNS Designation |
C | Mn | P | SE | Si | Cr | Ni | Mo | Ti | CbH | N | Cu | Se | V | Al |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ASTM A194/A194M Grade 8S | (Nitronic 60) S21800 | 0.10 | 7.0-9.0 | 0.060 | 0.030 | 3.5-4.5 | 16.0-18.0 | 8.0-9.0 | . . . | . . . | . . . | 0.08-0.18 | . . . | . . . | . . . | . . . |
Mechanical Properties of ASTM A194 Grade 8S Nuts
| Grade & Type | Brinell Hardness | Rockwell Hardness (C Scale) | Rockwell Hardness (B Scale) |
| 8S | 183–271 | 25 max | 88 min |
ASTM A194 Grade 8S Proof Load (Inch Series)
| Nominal Size (inch) | Threads per inch | Stress Area (inch²) | Proof Load, lbf – Heavy Hex | Proof Load, lbf – Hex |
| 1/4″ | 20 | 0.0316 | 5570 | 4770 |
| 5/16″ | 18 | 0.0524 | 9170 | 7860 |
| 3/8″ | 16 | 0.0774 | 13560 | 11620 |
| 7/16″ | 14 | 0.1063 | 18600 | 15940 |
| 1/2″ | 13 | 0.1419 | 24830 | 21280 |
| 9/16″ | 12 | 0.1820 | 31850 | 27300 |
| 5/8″ | 11 | 0.2260 | 39550 | 33900 |
| 3/4″ | 10 | 0.3340 | 58450 | 50100 |
| 7/8″ | 9 | 0.4620 | 80850 | 69300 |
| 1″ | 8 | 0.606 | 106000 | 90900 |
| 1 1/8″ | 8 | 0.7900 | 138200 | 118500 |
| 1 1/4″ | 8 | 1.0000 | 175000 | 150000 |
| 1 3/8″ | 8 | 1.2330 | 215800 | 185000 |
| 1 1/2″ | 8 | 1.492 | 261100 | 223800 |
ASTM A194 Grade 8S Marking
| Grade Type | Hot Forged or Cold Punched Nuts | Nuts Machined from Bar Stock |
| 8S | 8S | 8SB |
ASTM A194 Grade 8S Equivalent Grades
| American (UNS) | Common Name | Alloy Name |
|---|---|---|
| UNS S21800 | Nitronic 60 | 218 |
ASTM A194 GR. 8S Nuts Size Chart
| Nuts Size (mm) |
Diameter* (mm) |
Height (mm) |
||
|---|---|---|---|---|
| Hex Nuts | Jam Nuts | Nylock Nuts | ||
| 2 | 4 | 1.6 | 1.2 | – |
| 2.5 | 5 | 2 | 1.6 | – |
| 3 | 5.5 | 2.4 | 1.8 | 4 |
| 4 | 7 | 3.2 | 2.2 | 5 |
| 5 | 8 | 4 | 2.7 | 5 |
| 6 | 10 | 5 | 3.2 | 6 |
| 7 | 11 | 5.5 | 3.5 | – |
| 8 | 13 | 6.5 | 4 | 8 |
| 10 | 17 | 8 | 5 | 10 |
| 12 | 19 | 10 | 6 | 12 |
| 14 | 22 | 11 | 7 | 14 |
| 16 | 24 | 13 | 8 | 16 |
| 18 | 27 | 15 | 9 | 18.5 |
| 20 | 30 | 16 | 10 | 20 |
| * This is the diameter across the flats. It is also the size of wrench to use. | ||||
ASTM A194 GR. 8S Heavy Hex Nuts Dimension
| Nominal Size or Basic Major Thread Diameter | F | G | H | ||||||
| Width Across Flats |
Width Across Corners |
Thickness | |||||||
| Basic | Max | Min | Max | Min | Basic | Max | Min | ||
| 1/4 | .2500 | 7/16 | .438 | .428 | .505 | .488 | 7/32 | .226 | .212 |
| 5/16 | .3125 | 1/2 | .500 | .489 | .577 | .557 | 17/64 | .273 | .258 |
| 3/8 | .3750 | 9/16 | .562 | .551 | .650 | .628 | 21/64 | .337 | .479 |
| 7/16 | .4375 | 11/16 | .688 | .675 | .794 | .768 | 3/8 | .385 | .365 |
| 1/2 | .5000 | 3/4 | .750 | .736 | .866 | .840 | 7/16 | .448 | .427 |
| 9/16 | .5625 | 7/8 | .875 | .861 | 1.010 | .982 | 31/64 | .496 | .473 |
| 5/8 | .6250 | 15/16 | .938 | .922 | 1.083 | 1.051 | 35/64 | .559 | .535 |
| 3/4 | .7500 | 1-1/8 | 1.125 | 1.088 | 1.299 | 1.240 | 41/64 | .665 | .617 |
| 7/8 | .8750 | 1-5/16 | 1.312 | 1.269 | 1.516 | 1.447 | 3/4 | .776 | .724 |
| 1 | 1.0000 | 1-1/2 | 1.500 | 1.450 | 1.732 | 1.653 | 55/64 | .887 | .831 |
| 1-1/8 | 1.1250 | 1-11/16 | 1.688 | 1.631 | 1.949 | 1.859 | 31/32 | .999 | .939 |
| 1-3/8 | 1.3750 | 2-1/16 | 2.062 | 1.994 | 2.382 | 2.273 | 1-11/64 | 1.206 | 1.138 |
| 1-1/2 | 1.500 | 2-1/4 | 2.250 | 2.175 | 2.598 | 2.480 | 1-9/32 | 1.ASTM A194 GR. 8 | 1.245 |
| 1-5/8 | 1.6250 | 2-7/16 | 2.438 | 2.356 | 2.815 | 2.686 | 1-25/64 | 1.429 | 1.353 |
| 1-3/4 | 1.7500 | 2-5/8 | 2.625 | 2.538 | 3.031 | 2.893 | 1-1/2 | 1.540 | 1.460 |
| 2 | 2.0000 | 3 | 3.000 | 2.900 | 3.464 | 3.306 | 1-23/32 | 1.763 | 1.675 |
| 2-1/4 | 2.2500 | 3-3/8 | 3.375 | 3.263 | 3.897 | 3.719 | 1-15/16 | 1.986 | 1.890 |
| 2-1/2 | 2.5000 | 3-3/4 | 3.750 | 3.625 | 4.330 | 4.133 | 2-5/32 | 2.209 | 2.105 |
| 2-3/4 | 2.7500 | 4-1/8 | 4.125 | 3.988 | 4.763 | 4.546 | 2-3/8 | 2.431 | 2.319 |
ASTM A194 Grade 8S Nuts Inventory
ASTM A194 GR. 8S Hex Nuts
ASTM A194 GR. 8S Lock Nuts
ASTM A194 GR. 8S Wing Nuts
“Contact Jade Special Metals today with your requirement for ASTM A194 GR. 8S Nuts. We assure you of the best quote.
Available Stock of ASTM A194 8S Nuts
- ASTM A194 GR. 8S Panel Nut
- ASTM A194 8S Dome Nuts
- ASTM A194 GR. 8S Serrated Flange Nut
- ASTM A194 GR. 8S Hex Nut
- ASTM A194 GR. 8S Nut
- ASTM A194 8S Serrated Flange Nuts
- ASTM A194 GR. 8S Wing Nut
- ASTM A194 GR. 8S Self Locking Nuts
- ASTM A194 GR. 8S | ASME B18S.2.1 High Nuts
- ASTM A194 GR. 8S Spring T Nuts
- ASTM A194 GR. 8S Hexagone Nuts
- ASME B18S.2.1 ASTM A194 8S Nuts
- ASTM A194 GR. 8S Hex Nuts
- ASTM A194 8S Slotted Nut
- ASME SA194 Gr. 8S B18S.3 Nylon Insert Nut
- ASTM A194 GR. 8S Structural Nuts
- ASTM A194 GR. 8S Flex Lock Nut
- ASTM A194 GR. 8S 2 Way Lock Nuts
- ASTM A194 GR. 8S Square Nuts
- ASTM A194 8S Coupler Nuts
- ASTM A194 GR. 8S Hexagon Nuts
- ASTM A194 GR. 8S Heavy Hex Nuts
- ASTM A194 8S Hex Nuts
- ASTM A194 GR. 8S 2 Way Lock Nut
Applications of ASTM A194 GR. 8S Nuts
- Pipeline Engineering
- Marine Industry
- Chemical Industry
- Oil & gas industry
- Mechanical Engineering
- Plant Engineering
- Petrochemical Industry
- Power Industry
- Aerospace
- Food Processing Industry
We maintain ready stock of Stainless Steel ASTM A194 GR. 8S Self Locking Nut, ASTM A194 GR. 8S Heavy Hex Nuts, ASTM A194 GR. 8S Self Locking Nut, ASTM A194 GR. 8S Lock Nuts, ASTM A194 GR. 8S Hex Nuts. Get in touch with us with your requirement for quick quote.
