BDF can offer you good quality 321 stainless steel hex nuts, 321 stainless steel hex heavy nuts, 321 stainless steel nylon lock nuts, 321 stainless steel hex jam nuts etc. Our standards/specifications covers ASTM, ASME, DIN, ISO. Such as DIN934, 5587, ISO4032, ISO4033, ASME/AISI 18.2.2 etc. We can also manufacture all shapes of non-standard hastelloy nuts according to customers’ drawing. BDF is able to produce a wide range of sizes nuts by cold or hot forging. The diameter of nuts ranges from M6-M80 in Metric and 5/16” to 3 1/2” in Inch. BDF had kept some common sized nuts in stock.
Tensile strength σb (MPa): ≥520
Conditional yield strength σ0.2 (MPa): ≥ 205
Elongation δ5 (%): ≥ 40
Area shrinkage ψ (%): ≥ 50
Hardness: ≤187HB; ≤90HRB; ≤200HV
It is mainly used in field open-air machines for chemical, coal and petroleum industries with high resistance to intergranular corrosion, heat-resistant parts for building materials and parts with difficult heat treatment, such as:
1. Petroleum waste gas combustion pipeline
2. Engine exhaust pipe
3. Boiler casing, heat exchanger, furnace components
4. Dust-proof parts for diesel engines
If our 321 stainless steel hex nuts caters to your requirement, welcome to contact our professional manufacturers and suppliers. Highly qualified products, competitive price and good after-sale service can be assured.