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Pengkumta Fasteners, a reputable manufacturer and supplier located in Bangkok, Thailand, is well-known for providing top-notch Stainless Steel 321 / 321H Nuts that meet global industrial standards. These nuts are prized for their outstanding corrosion resistance, impressive strength, and stability even at high temperatures. Crafted with precision and a commitment to quality, they are perfect for critical applications in tough environments. With a strong emphasis on customer satisfaction, durability, and timely delivery, Pengkumta Fasteners has built a solid reputation as a dependable partner for Stainless Steel 321 / 321H Nuts in both local and international markets.
Stainless Steel 321 / 321H Nuts are made from iron, with 17–19% chromium, 9–12% nickel, and titanium added to prevent intergranular corrosion. The 321H version has a higher carbon content, which boosts its strength and creep resistance at elevated temperatures. These nuts boast a tensile strength of around 515 MPa and a yield strength of about 205 MPa. They maintain excellent toughness and oxidation resistance up to 870°C, making them ideal for high-temperature settings while ensuring durability and mechanical stability.
| 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.
You’ll find Stainless Steel 321 / 321H Nuts widely used in industries that demand high-temperature performance and corrosion resistance. They are commonly found in chemical processing plants, refineries, and petrochemical industries, where equipment is often exposed to harsh chemicals and heat. In the aerospace and automotive sectors, they play a crucial role in exhaust systems and components that require thermal stability. Power generation plants also rely on them for boilers, heat exchangers, and pressure vessels. Plus, they’re utilized in marine, food processing, and construction industries, providing reliable fastening solutions even in challenging conditions.
At Pengkumta Fasteners, we take great care in installing our Stainless Steel 321/321H nuts to ensure they arrive in pristine condition. Each nut is carefully inspected and individually wrapped with protective material to prevent corrosion. They are then placed in tightly labeled boxes with detailed product details and quantities. Our packaging is designed to protect the environment and physical effects, ensuring that your high-performance fruit is delivered safely and ready for immediate use.
Pengkumta Fasteners is a leading manufacturer and supplier of high-quality fasteners in Bangkok, Thailand, with over 8 years of experience serving global industries.
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