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DIN 933 Hex Bolt
QS: DIN 933 Hex Bolt
Name: DIN 933 Hex Bolt
Standard: DIN 933
Material: D2-80
Size: M6-1
Lenght: 12 mm
Surface: Natural color
Price: EXW USD 0.01/ pcs
MOQ: 100 pcs
Customization: yes
Delivery time: 7-15 Day
Standard: DIN 933
Material: D2-80
Size: M6-1
Lenght: 12 mm
Surface: Natural color
Price: EXW USD 0.01/ pcs
MOQ: 100 pcs
Customization: yes
Delivery time: 7-15 Day
Quantity
The M6-1 x 12 DIN 933 Hex Bolt is manufactured to DIN 933 specifications with a fully rolled thread and 12 mm overall length. Made from D2-80 duplex stainless steel, this fastener delivers a minimum tensile strength of 800 MPa and provides significantly better pitting and stress-corrosion resistance than 316L.
The natural, uncoated finish performs reliably in humid, acidic, alkaline, and marine environments without additional plating. The lightweight duplex design helps reduce equipment weight by over 15% while maintaining structural integrity.
Material Properties:
- Tensile strength Rm ≥ 800 N/mm² (measured 820–850 N/mm²)
- 0.2% proof stress Rp0.2 ≥ 600 N/mm² (measured 640–680 N/mm²)
- Elongation A50 ≥ 25%
- Hardness HV10 280–320
- Microstructure: ≈50% α-ferrite + ≈50% γ-austenite
- Tensile strength Rm ≥ 800 N/mm² (measured 820–850 N/mm²)
- 0.2% proof stress Rp0.2 ≥ 600 N/mm² (measured 640–680 N/mm²)
- Elongation A50 ≥ 25%
- Hardness HV10 280–320
- Microstructure: ≈50% α-ferrite + ≈50% γ-austenite
Corrosion Performance:
- PREN ≥ 34 (vs. ≈19 for 304 stainless steel)
- Neutral salt spray test (ISO 9227): no rust at 500 hours, <1% rust at 1000 hours
- Critical pitting temperature (CPT) ≥ 35°C in 6% FeCl₃ solution, 20°C higher than 304
- SCC threshold ≥ 320 MPa in boiling 40% MgCl₂, ten times that of 304
- PREN ≥ 34 (vs. ≈19 for 304 stainless steel)
- Neutral salt spray test (ISO 9227): no rust at 500 hours, <1% rust at 1000 hours
- Critical pitting temperature (CPT) ≥ 35°C in 6% FeCl₃ solution, 20°C higher than 304
- SCC threshold ≥ 320 MPa in boiling 40% MgCl₂, ten times that of 304
Anti-Galling Performance:
- Surface friction coefficient μ = 0.11 (vs. 0.18 for 304)
- No seizure or material pick-up after four tightening-loosening cycles at 20 N·m preload
- Removal torque drop < 5%
- Surface friction coefficient μ = 0.11 (vs. 0.18 for 304)
- No seizure or material pick-up after four tightening-loosening cycles at 20 N·m preload
- Removal torque drop < 5%
This bolt is the ideal replacement for 304/316 fasteners in offshore structures, desulfurization towers, hydrogen systems, and food processing equipment. Its compact 12 mm length makes it perfect for confined-space connections.
Price: EXW USD 0.01/pc | MOQ: 100 pcs | Customization: Yes | Lead time: 7–15 days
FAQ
1. What does D2-80 mean on this hex bolt?
D2-80 refers to the duplex stainless steel material grade, indicating minimum tensile strength of 800 MPa.
1. What does D2-80 mean on this hex bolt?
D2-80 refers to the duplex stainless steel material grade, indicating minimum tensile strength of 800 MPa.
2. What standard does the M6-1 x 12 DIN 933 Hex Bolt comply with?
This bolt complies with DIN 933, which specifies a full thread from head to end.
This bolt complies with DIN 933, which specifies a full thread from head to end.
3. Is this bolt suitable for marine environments?
Yes, with PREN ≥ 34 and 500-hour salt spray resistance, it outperforms 316L in marine applications.
Yes, with PREN ≥ 34 and 500-hour salt spray resistance, it outperforms 316L in marine applications.
4. Why choose duplex stainless steel over 304?
Duplex provides over 50% higher strength, superior corrosion resistance, and reduces weight by 15–20% under the same preload.
Duplex provides over 50% higher strength, superior corrosion resistance, and reduces weight by 15–20% under the same preload.
5. Does the bolt require surface coating?
No, the natural finish provides excellent corrosion resistance without additional plating.
No, the natural finish provides excellent corrosion resistance without additional plating.
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