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At Brian Fasteners, we are the leading manufacturer and supplier of Stainless Steel 321/321H nuts in Houston , USA. Our fruit is specially designed for high humidity environments, giving it exceptional resistance to rust and oxidation. Ideal for the aerospace, automotive, and medical industries, our stainless steel 321/321H nuts meet stringent quality standards to ensure reliability and durability. Trust us in perfectly designed nuts that provide consistent, long-lasting performance in tough industrial applications.
High-quality stainless steel 321 and 321H nuts made for corrosive and high-temperature conditions are the speciality of Brian Fasteners, a well-known manufacturer and supplier in Houston, USA. For applications involving frequent thermal cycling, these titanium-stabilized nuts offer exceptional resistance to intergranular corrosion. Our SS 321/321H nuts are produced in accordance with strict international standards, guaranteeing both dimensional accuracy and mechanical dependability. Brian Fasteners provides specialised solutions, fast turnaround, and outstanding customer service. We supply fasteners designed for strength, durability, and long service life to industries like power generation, chemical processing, and aerospace.
| Specifications | IS, BS, ASTM |
| Standard | ASTM / ASME – A/ SA 193 |
| Length | 3 mm to 200 mm |
| Size | M02 to M33 |
| Type | Hex Nuts, Dome Nuts, Hex Machine Screw Nuts, Hex Lock Nuts Nylon Insert, Hex Jam Nuts, Hex Jam Nylon Lock Nuts, Heavy Hex Nuts, Wing Nuts, Cap Nuts, Acorn Nuts, Square Nuts, K-Lock Nuts, Prevailing Torque Lock Nuts, Top Lock Nuts, Two-Way Reversible Lock Nuts, Pin-Lock Nuts, T-Nuts, Coupling Nuts, T-Slot Nuts, Castle Nuts, Flange Nuts Serrated, Machine Hex Nuts, Finished Hex Nuts, Forged Eye Nut, Rivet Nuts, Slotted Hex Nut, Acme Hex Nuts, Nylock Nuts, Anco Locknuts, Flexloc Nuts, Reversible Locknuts, Panel Nut, Poly Nut, Conelock Nut, Self Clinching Nuts, Domed Cap Nuts, Imperial Thread Nuts, Imperial Thread Nylock Nuts, Sleeve Nuts, Thin Nuts, Weld Nuts, High Tensile Nuts, Cage Nuts, Security Nuts, Imperial Nuts, Industrial Nuts, Miscellaneous Nuts, Insert Nuts, Knurled Nuts, Round Nuts |
| Element | SS 321 |
| Ni | 9.0 – 12.0 |
| C | 0.08 |
| Mn | 2.0 max |
| P | 0.045 max |
| S | 0.030 max |
| Si | 0.75 max |
| Cr | 17.0 – 19.0 |
| Mo | – |
| N | 0.10 |
| Element | SS 321 |
| Tensile Strength (MPa) min | 515 |
| Yield Strength 0.2% Proof (MPa) min | 205 |
| Elongation (% in 50mm) min | 40 |
| Rockwell B (HR B) max Hardness | 95 |
| Brinell (HB) max Hardness | 217 |
To satisfy our clients needs by providing high quality products at competitive price as per the schedule and to maintain long term relationship with our clients.
About 17–19% chromium, 9–12% nickel, and titanium (≥5x carbon content) are used to stabilise stainless steel 321 and 321H nuts. For increased high-temperature strength, the 321H variant has a higher carbon content (0.04–0.10%). Excellent resistance to oxidation and intergranular corrosion is provided by these austenitic stainless steels. Tensile strength typically falls between 515 and 620 MPa, yield strength is around 205 MPa, and elongation is between 30 and 40 percent. These nuts are perfect for pressure-retaining applications and thermal cycling environments because of the titanium stabilisation and higher carbon content in 321H, particularly when weldability and creep resistance are needed.
High-temperature applications like heat exchangers, boilers, exhaust manifolds, pressure vessels, and furnace components frequently use stainless steel 321 / 321H nuts. These nuts are especially useful in the power generation, chemical processing, aerospace, and petroleum refining sectors. Bolted joints exposed to constant heating and cooling can benefit from the exceptional oxidation resistance and structural integrity of 321/321H stainless steel. 321H is selected for applications needing increased creep strength, even though 321 is recommended for general high-temperature corrosion resistance. In thermally stressed assemblies and welded structures, these nuts offer dependable fastening.
Brian Fasteners is a leading manufacturer and supplier of high-quality fasteners in Houston , USA, with over 8 years of experience serving global industries.
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