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1.4529 Spring lock washer
DIN127-1987-10.pdf
Name | 1.4529 Spring Lock Washer |
Standard | DIN127B,ASME B 18.22.1 |
Size Range | M5-M36 |
Finish | Bright&Clean |
Marking | No marking |
Material | ALLOY926,1.4529,UNS N08926 |
Grade | Grade HV140 |
Certificates | EN10204-3.1B |
Non-standards | OEM is available, according to drawing or samples |
Samples | Samples available |
Package | Bulk in box and then in cartons, then on pallets, or according to customers' requirement. |
Payment | T/T,Western Union |
Incoloy 926 alloy similar brand
| UNS | Trademark | W.Nr |
| N08926 | Incoloy 926 | 1.4529 |
Incoloy 926 Chemical composition
| Alloy | % | Ni | Cd | Fe | C | Mn | Si | Cu | Mo | N | P | S |
| Incoloy 926 | Min. | 24 | 19 | Margin | 0.5 | 6.0 | 0.15 | |||||
| Max. | 26 | 21 | 0.02 | 2 | 0.5 | 1.5 | 7.0 | 0.25 | 0.03 | 0.01 |
Incoloy 926 Physical properties
| Density | 8.1 g/cm³ |
| Melting point | 1320-1390 ºC |
Minimum value of mechanical properties of Incoloy 926 alloy at room temperature
| Tensile strength Rm N/mm² | Yield strength RP0.2 N/mm² | Elongation A 5 % |
| 650 | 295 | 35 |
The 1.4529 DIN127B Spring Lock Washer (also known as Alloy 926 or UNS N08926) is a high-performance locking component designed to prevent fastener loosening under vibration—adhering strictly to the DIN127B and ASME B18.22.1 standards. Crafted from 1.4529 super austenitic stainless steel, this washer stands out for its “king-level” corrosion resistance: it outperforms Alloy 904L (1.4539) with higher molybdenum (6.0–7.0%) and nitrogen (0.15–0.25%) content, making it ideal for extreme chemical and temperature environments. With over 15 years of experience supplying to European markets (passing strict quality inspections) and stock quantities up to 10,000 pieces, we offer both standard (M5–M36) and custom OEM solutions. Whether for pressure vessels, swimming pools, or chemical reactors, this washer ensures long-term fastening stability.
Exceptional Corrosion Resistance: 1.4529 (Alloy 926) resists local corrosion phenomena, including crevice corrosion, pitting, and chloride-induced stress cracking. It performs reliably in environments with sulfuric acid, phosphoric acid, seawater, and salt sprays—critical for industries like chemical processing and marine engineering.
Wide Temperature Tolerance: Approved for use in pressure vessels from -196°C (cryogenic applications, e.g., LNG storage) to 400°C (high-temperature processes, e.g., thermal reactors). This temperature range surpasses most standard stainless steel washers, expanding its application scope.
DIN127B Compliance: Features a single-coil spring design with precise dimensional tolerances (e.g., inner hole diameter, coil thickness) per DIN127B. The spring action creates continuous tension between the bolt and nut, preventing loosening from vibration or thermal expansion.
Certified Quality: All washers come with EN10204-3.1B certification, confirming material composition (Ni:24–26%, Cr:19–21%, Mo:6.0–7.0%), mechanical properties (tensile strength: 650 N/mm², yield strength:295 N/mm²), and manufacturing compliance. It also holds DIBt (German Institute for Building Technology) certification for construction applications.
Fast Custom Production: We fulfill most standard orders within 30 days and offer OEM services for non-standard sizes, shapes, or surface treatments. Whether you need a larger M36 washer for heavy machinery or a specialized coil design, we can deliver per your drawing.
The 1.4529 DIN127B Spring Lock Washer’s unique properties make it a top choice for demanding sectors:
Chemical & Pharmaceutical Industry: Used in reactors, mixing tanks, and pipeline flanges handling corrosive chemicals (e.g., sulfuric acid, chlorides). It prevents washer degradation and maintains seal integrity, avoiding costly leaks or contamination.
Swimming Pool & Water Treatment: Mandatory for attaching structural components (e.g., ladder brackets, filter mounts) in public swimming pools. 1.4529’s resistance to chlorine-induced stress corrosion eliminates past accidents caused by washer failure in chlorinated water.
Pressure Vessel & Cryogenic Engineering: Integrated into LNG storage tanks (-196°C) and high-temperature pressure vessels (400°C) in power plants or refineries. Its temperature stability ensures the washer retains its spring action and locking ability in extreme conditions.
Marine & Offshore: Applied in offshore wind turbines, oil platforms, and ship hulls. It secures bolted connections (e.g., propeller shafts, deck equipment) against saltwater corrosion and constant vibration, reducing maintenance frequency.
A1: 1.4529 is an upgrade over 904L: it has higher molybdenum (6.0–7.0% vs. 4.0–5.0% in 904L) and added nitrogen, boosting resistance to pitting and stress corrosion. For environments with high chlorides (e.g., swimming pools, seawater), 1.4529 is more durable and longer-lasting than 904L.
A2: Yes. It holds DIBt certification (Germany’s technical authority for construction), confirming compliance with European building codes. This makes it suitable for use in European construction projects (e.g., bridges, commercial buildings) that require strict safety validation.
A3: While Bright&Clean is standard (optimizing corrosion resistance), we offer passivation (to enhance oxide layer protection) and electropolishing (for ultra-smooth surfaces, ideal for pharmaceutical or semiconductor cleanrooms) upon request. These finishes add 3–5 days to production time but do not compromise the washer’s performance.
A4: For custom sizes or designs, the MOQ is 500 pieces. This allows us to optimize production efficiency while keeping costs competitive. For smaller custom orders (e.g., 100–200 pieces), we can provide a quoted price based on your specific requirements.
A5: Yes. We supply detailed 2D/3D drawings (per DIN127B:1987-10) upon request, including dimensions (inner hole diameter, coil height, thickness), material specifications, and mechanical properties. These drawings help verify compatibility with your bolts and application.
1.4529 Spring lock washerDIN127-1987-10.pdf
Name | 1.4529 Spring Lock Washer |
Standard | DIN127B,ASME B 18.22.1 |
Size Range | M5-M36 |
Finish | Bright&Clean |
Marking | No marking |
Material | ALLOY926,1.4529,UNS N08926 |
Grade | Grade HV140 |
Certificates | EN10204-3.1B |
Non-standards | OEM is available, according to drawing or samples |
Samples | Samples available |
Package | Bulk in box and then in cartons, then on pallets, or according to customers' requirement. |
Payment | T/T,Western Union |
Incoloy 926 alloy similar brand
| UNS | Trademark | W.Nr |
| N08926 | Incoloy 926 | 1.4529 |
Incoloy 926 Chemical composition
| Alloy | % | Ni | Cd | Fe | C | Mn | Si | Cu | Mo | N | P | S |
| Incoloy 926 | Min. | 24 | 19 | Margin | 0.5 | 6.0 | 0.15 | |||||
| Max. | 26 | 21 | 0.02 | 2 | 0.5 | 1.5 | 7.0 | 0.25 | 0.03 | 0.01 |
Incoloy 926 Physical properties
| Density | 8.1 g/cm³ |
| Melting point | 1320-1390 ºC |
Minimum value of mechanical properties of Incoloy 926 alloy at room temperature
| Tensile strength Rm N/mm² | Yield strength RP0.2 N/mm² | Elongation A 5 % |
| 650 | 295 | 35 |
The 1.4529 DIN127B Spring Lock Washer (also known as Alloy 926 or UNS N08926) is a high-performance locking component designed to prevent fastener loosening under vibration—adhering strictly to the DIN127B and ASME B18.22.1 standards. Crafted from 1.4529 super austenitic stainless steel, this washer stands out for its “king-level” corrosion resistance: it outperforms Alloy 904L (1.4539) with higher molybdenum (6.0–7.0%) and nitrogen (0.15–0.25%) content, making it ideal for extreme chemical and temperature environments. With over 15 years of experience supplying to European markets (passing strict quality inspections) and stock quantities up to 10,000 pieces, we offer both standard (M5–M36) and custom OEM solutions. Whether for pressure vessels, swimming pools, or chemical reactors, this washer ensures long-term fastening stability.
Exceptional Corrosion Resistance: 1.4529 (Alloy 926) resists local corrosion phenomena, including crevice corrosion, pitting, and chloride-induced stress cracking. It performs reliably in environments with sulfuric acid, phosphoric acid, seawater, and salt sprays—critical for industries like chemical processing and marine engineering.
Wide Temperature Tolerance: Approved for use in pressure vessels from -196°C (cryogenic applications, e.g., LNG storage) to 400°C (high-temperature processes, e.g., thermal reactors). This temperature range surpasses most standard stainless steel washers, expanding its application scope.
DIN127B Compliance: Features a single-coil spring design with precise dimensional tolerances (e.g., inner hole diameter, coil thickness) per DIN127B. The spring action creates continuous tension between the bolt and nut, preventing loosening from vibration or thermal expansion.
Certified Quality: All washers come with EN10204-3.1B certification, confirming material composition (Ni:24–26%, Cr:19–21%, Mo:6.0–7.0%), mechanical properties (tensile strength: 650 N/mm², yield strength:295 N/mm²), and manufacturing compliance. It also holds DIBt (German Institute for Building Technology) certification for construction applications.
Fast Custom Production: We fulfill most standard orders within 30 days and offer OEM services for non-standard sizes, shapes, or surface treatments. Whether you need a larger M36 washer for heavy machinery or a specialized coil design, we can deliver per your drawing.
The 1.4529 DIN127B Spring Lock Washer’s unique properties make it a top choice for demanding sectors:
Chemical & Pharmaceutical Industry: Used in reactors, mixing tanks, and pipeline flanges handling corrosive chemicals (e.g., sulfuric acid, chlorides). It prevents washer degradation and maintains seal integrity, avoiding costly leaks or contamination.
Swimming Pool & Water Treatment: Mandatory for attaching structural components (e.g., ladder brackets, filter mounts) in public swimming pools. 1.4529’s resistance to chlorine-induced stress corrosion eliminates past accidents caused by washer failure in chlorinated water.
Pressure Vessel & Cryogenic Engineering: Integrated into LNG storage tanks (-196°C) and high-temperature pressure vessels (400°C) in power plants or refineries. Its temperature stability ensures the washer retains its spring action and locking ability in extreme conditions.
Marine & Offshore: Applied in offshore wind turbines, oil platforms, and ship hulls. It secures bolted connections (e.g., propeller shafts, deck equipment) against saltwater corrosion and constant vibration, reducing maintenance frequency.
A1: 1.4529 is an upgrade over 904L: it has higher molybdenum (6.0–7.0% vs. 4.0–5.0% in 904L) and added nitrogen, boosting resistance to pitting and stress corrosion. For environments with high chlorides (e.g., swimming pools, seawater), 1.4529 is more durable and longer-lasting than 904L.
A2: Yes. It holds DIBt certification (Germany’s technical authority for construction), confirming compliance with European building codes. This makes it suitable for use in European construction projects (e.g., bridges, commercial buildings) that require strict safety validation.
A3: While Bright&Clean is standard (optimizing corrosion resistance), we offer passivation (to enhance oxide layer protection) and electropolishing (for ultra-smooth surfaces, ideal for pharmaceutical or semiconductor cleanrooms) upon request. These finishes add 3–5 days to production time but do not compromise the washer’s performance.
A4: For custom sizes or designs, the MOQ is 500 pieces. This allows us to optimize production efficiency while keeping costs competitive. For smaller custom orders (e.g., 100–200 pieces), we can provide a quoted price based on your specific requirements.
A5: Yes. We supply detailed 2D/3D drawings (per DIN127B:1987-10) upon request, including dimensions (inner hole diameter, coil height, thickness), material specifications, and mechanical properties. These drawings help verify compatibility with your bolts and application.
