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304 Hex Nut China Suppliers
QS Fastener: 304 Hex Nut China Suppliers
Name: 304 Hex Nut China Suppliers
Standard: DIN934
Material: SS304
Size: M3
Height: 2.15 to 2.4 mm
Surface: Natural color
Standard: DIN934
Material: SS304
Size: M3
Height: 2.15 to 2.4 mm
Surface: Natural color
Quantity
As a leading supplier of 304 hex nut China suppliers, we offer the M3 DIN934 stainless steel hex nut manufactured from premium SS304 austenitic stainless steel. This precision-engineered fastener features a natural surface finish that delivers reliable corrosion resistance across diverse operating environments. Each 304 hex nut is produced through cold-forging technology and undergoes 100% inspection using go/no-go thread gauges to guarantee dimensional accuracy. The carefully controlled height range of 2.15 to 2.4 mm provides an optimal strength-to-weight ratio, making this 304 hex nut particularly suitable for compact assemblies where space constraints exist.
Material Properties and Performance
The 304 hex nut exhibits a chemical composition of Cr 18.0–20.0% and Ni 8.0–10.5%, with carbon content below 0.08%. This formulation enables the rapid formation of a chromium-rich passive film measuring 2–5 nm in thickness, which is fundamental to its corrosion resistance. Under ISO 9223 C2–C3 atmospheric conditions, the 304 hex nut achieves a pitting potential of approximately +220 mV SCE. Neutral salt-spray testing per ISO 9227 demonstrates first red rust appearance after 96 hours, translating to a 10–20 year service life in general industrial environments with corrosion rates below 0.1 mm/year.
The 304 hex nut exhibits a chemical composition of Cr 18.0–20.0% and Ni 8.0–10.5%, with carbon content below 0.08%. This formulation enables the rapid formation of a chromium-rich passive film measuring 2–5 nm in thickness, which is fundamental to its corrosion resistance. Under ISO 9223 C2–C3 atmospheric conditions, the 304 hex nut achieves a pitting potential of approximately +220 mV SCE. Neutral salt-spray testing per ISO 9227 demonstrates first red rust appearance after 96 hours, translating to a 10–20 year service life in general industrial environments with corrosion rates below 0.1 mm/year.
Application-Specific Performance
Food Processing and Pharmaceutical Equipment: When electropolished to Ra ≤0.8 µm, the 304 hex nut meets GB 4806.9-2016 migration test requirements, with chromium and nickel release below 0.05 mg/kg and 0.02 mg/kg respectively in 4% acetic acid at 95°C for 30 minutes. After 1000 cleaning cycles in 200 ppm sodium hypochlorite at 60°C, mass loss remains under 0.3 g/m² with no intergranular corrosion.
Food Processing and Pharmaceutical Equipment: When electropolished to Ra ≤0.8 µm, the 304 hex nut meets GB 4806.9-2016 migration test requirements, with chromium and nickel release below 0.05 mg/kg and 0.02 mg/kg respectively in 4% acetic acid at 95°C for 30 minutes. After 1000 cleaning cycles in 200 ppm sodium hypochlorite at 60°C, mass loss remains under 0.3 g/m² with no intergranular corrosion.
Electronic and Precision Instrumentation: The annealed 304 hex nut demonstrates magnetic permeability of μ_r ≈ 1.005, making it ideal for MRI equipment and particle accelerators. Outgassing properties (TML <1%, CVCM <0.1% per ASTM E595) qualify this 304 hex nut for use in 10⁻⁶ mbar vacuum environments.
Chemical and Marine Environments: At ambient temperatures, the 304 hex nut withstands ≤5% sulfuric acid and ≤20% nitric acid. In cooling water with pH 4–10 and chloride concentrations up to 200 mg/L, crevice corrosion temperature is maintained at 15–20°C. Brief exposure to 800°C for up to 30 minutes preserves tensile strength above 520 MPa, conforming to GB/T 3098.15 A2-70 specifications.
Application Limitations: For environments exceeding 1000 mg/L chloride at temperatures above 60°C, full seawater immersion, or oxidizing acids over 65% nitric acid concentration, we recommend upgrading to 316L material, which delivers 2–3 times longer service life through enhanced pitting resistance.
Quality Assurance and Supply
China suppliers of 304 hex nut products maintain strict quality control systems throughout production. Our M3 DIN934 hex nuts are available for immediate shipment, backed by comprehensive material test reports and dimensional inspection certificates. Contact us to discuss your specific application requirements or request samples for evaluation.
China suppliers of 304 hex nut products maintain strict quality control systems throughout production. Our M3 DIN934 hex nuts are available for immediate shipment, backed by comprehensive material test reports and dimensional inspection certificates. Contact us to discuss your specific application requirements or request samples for evaluation.
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