Stainless Steel 321 Fasteners
Sankalp Alloys Overseas is one of the prime manufacturers, suppliers, stockists, and exporters of high-quality Stainless Steel 321 Fasteners. The fasteners are fabricated from stabilized austenitic stainless steel, which due to its exciting performance finds application in various demanding industries. SS 321 alloy consists of 17% chromium and 9% nickel with titanium for stabilization along with elements like carbon, iron, manganese, nitrogen, phosphorus, sulfur, and silicon.
Our Stainless Steel 321 Hex Nuts find extensive application due to their sturdy built-up with superior mechanical properties. SS 321 Hex Bolt provides a minimum tensile strength of 621 MPa and a minimum yield strength of 276 MPa with a high hardness rating of 80 HBW. Special features These fasteners are designed for high-temperature and high-pressure applications, making them ideal for high-temperature conditions with dense situations like power generation industries.
High-temperature performance of this AISI 321 Nut Bolt is enhanced because of its high melting point. UNS S32100 Stainless Steel composition gives our 321 Stainless Steel Dowel Pins excellent ability to perform under temperatures up to 1399 degrees Celsius. The additions of titanium contentizada significantly enhance the welding performance over the content of the 304 grade for better weld integrity and life.
Our Stainless Steel 321 Fasteners consist of a wide range like SS 321 Threaded Rods, which are high-temperature fasteners that can work efficiently up to 816 degrees Celsius. In addition, they offer good oxidation and corrosion resistance because of which they become suitable for a variety of industrial applications. Of our continuously changing and diversified products, SS 321 Screws provide secure fastening solutions with long-life performance in most chemical environments. Sankalp Alloys Overseas supports the delivery of high-quality Stainless Steel 321 Fasteners, manufactured to their taste while adhering to the strictest standards of the industry. The fasteners are provided in many dimensions, grades, and specifications that comply with the requirements of specific clients. Our products include 1.4541 SS 321 Bolts and Nuts designed for total reliability and effectiveness in every kind of application.
Supplier and exporter of SS 321 Hex Head Screw and Stainless Steel 321 Bolts in Mumbai
Stainless Steel 321 Fasteners Manufacturers in Mumbai, Stainless Steel 321 Fasteners Suppliers in Mumbai, Stainless Steel 321 Fasteners Stockists in Mumbai, Stainless Steel 321 Fasteners Exporters in Mumbai
Stockist of 321 SS Stud Bolt Materials in India, Check 321 Stainless Steel Hex Nuts Specification Chart
| Parameter |
Details |
| Specification |
ASTM A193 / A193, ASME SA193 / SA194 |
| Standard |
DIN, ASTM, BS and all International Standards |
| Length |
3 mm to 200 mm |
| Nuts Size |
M3 - M56 | 3/6" to 2" | Custom Sizes |
| Bolt/Screw Size |
M3 - M56 | 3/6" to 2" | Custom Sizes |
| Machine Screws Size |
M1.6 - M12 |
| Washers Size |
M3 - M56 | 3/6" to 2" | Custom Sizes |
| Grade |
SS 321 |
| Types |
Nut, Hex Coupling Nut, Hex Nut, Square Nut, Hex Domed Cap Nuts, Hex Head Bolts, Stud Bolts, Socket Hexagon Head Screw, Pan Head Screw, Socket Head Cap Screw, Wing Screw, T-Head Bolts, Foundation Bolts, Screw, Studs, Socket Screw, Hex Set Screw, Cap Screw, Machine Screw, Wing Screw, Spring Washers, Washers, Studs, Marine Anchors, Anchors, Hexagon Nut, U-Bolts, Anchor Bolt, Mushroom Head Square Neck Bolts, J Bolts, Eye Bolt, Structural Bolts, Bolts, Nuts, Sockets, Screws, Allen Cap screw |
| Grade |
C |
Mn |
Si |
P |
S |
Cr |
Mo |
Ni |
N |
| 321 |
0.080 max |
2 max |
1 max |
0.045 max |
0.030 max |
19 min |
- |
13 min |
- |
| Grade |
Tensile Strength (MPa) min |
Yield Strength 0.2% Proof (MPa) min |
Elongation (% in 50mm) min |
Hardness Rockwell B (HR B) max |
Hardness Brinell (HB) max |
| 321 |
515 |
205 |
40 |
95 |
217 |
| Grade |
UNS No |
Old British |
Euronorm |
Swedish SS |
Japanese JIS |
BS |
En |
| 321 |
S32100 |
321S31 |
58B, 58C |
1.4541 X6CrNiTi18-10 |
2337 |
SUS 321 |
- |
| Grade |
Density (kg/m³) |
Elastic Modulus (GPa) |
Mean Coefficient of Thermal Expansion (μm/m/°C) |
Thermal Conductivity (W/m.K) |
Specific Heat 0-100 °C (J/kg.K) |
Electrical Resistivity (nΩ.m) |
| 0-100 °C |
0-315 °C |
0-538 °C |
at 100 °C |
at 500 °C |
| 321 |
8027 |
193 |
16.6 |
17.2 |
18.6 |
16.1 |
22.2 |
500 |
720 |
| Nominal Size (D) |
Body Diameter Max (mm) |
Body Diameter Min (mm) |
Head Thickness Max (mm) |
Head Thickness Min (mm) |
Across Flats Max (mm) |
Across Flats Min (mm) |
Across Corners Max (mm) |
Across Corners Min (mm) |
| M10 | 10.00 | 9.78 | 6.63 | 6.17 | 17.00 | 15.73 | 18.48 | 17.77 |
| M12 | 12.00 | 11.73 | 7.76 | 4.24 | 19.00 | 17.73 | 20.78 | 20.03 |
| M14 | 14.00 | 13.73 | 9.09 | 8.51 | 22.00 | 20.67 | 24.25 | 23.35 |
| M16 | 16.00 | 15.73 | 10.32 | 9.68 | 24.00 | 23.67 | 27.71 | 26.75 |
| M20 | 20.00 | 19.67 | 12.88 | 12.12 | 30.00 | 29.16 | 34.64 | 32.95 |
| M24 | 24.00 | 23.67 | 15.44 | 14.56 | 36.00 | 35.00 | 41.57 | 39.55 |
| M30 | 30.00 | 29.67 | 19.48 | 17.92 | 46.00 | 45.00 | 53.12 | 50.85 |
| M36 | 36.00 | 35.61 | 23.38 | 21.63 | 55.00 | 53.80 | 63.51 | 60.79 |
| M42 | 42.00 | 41.38 | 26.97 | 25.03 | 65.00 | 62.90 | 75.06 | 71.71 |
| M48 | 48.00 | 47.38 | 31.07 | 28.93 | 75.00 | 72.60 | 86.60 | 82.76 |
| M56 | 56.00 | 55.26 | 36.20 | 33.80 | 85.00 | 82.20 | 98.15 | 93.71 |
| M64 | 64.00 | 63.26 | 41.32 | 38.68 | 95.00 | 91.80 | 109.70 | 104.65 |
| M72 | 72.00 | 71.26 | 46.45 | 43.55 | 105.00 | 101.40 | 121.24 | 115.60 |
| M80 | 80.00 | 79.26 | 51.58 | 48.42 | 115.00 | 111.00 | 132.72 | 126.54 |
| M90 | 90.00 | 89.13 | 57.74 | 54.26 | 130.00 | 125.50 | 150.11 | 143.07 |
| M100 | 90.00 | 99.13 | 63.90 | 60.10 | 145.00 | 140.00 | 167.43 | 159.60 |
| Size |
Diameter* (mm) |
Height (mm) |
Hex Nut |
Jam Nut |
Nylock Nut |
| 6 | 10 | 5 | 3.2 | 6 | 7 |
| 8 | 11 | 5.5 | 3.5 | - | 8 |
| 10 | 13 | 6.5 | 4 | 8 | 10 |
| 12 | 17 | 8 | 5 | 10 | 12 |
| 14 | 19 | 10 | 6 | 12 | 14 |
| 16 | 22 | 11 | 7 | 14 | 16 |
| 18 | 24 | 13 | 8 | 16 | 18 |
| 20 | 27 | 15 | 9 | 18.5 | 20 |
| 22 | 30 | 16 | 10 | 20 | - |
* This is the diameter across the flats. It is also the size of wrench to use.
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