NIPPON CHEMICAL SCREW CO., LTD.
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PPS/W ｜ PPS Flat Washer for High-Temperature Applications and Stable Load Distribution
🌟 Key Takeaways
- PPS/W is a flat washer manufactured from Polyphenylene Sulfide (PPS)
- Supports continuous operating temperatures up to 200°C (392°F) and complies with UL94 V-0
- Distributes clamping load, reduces surface damage, and improves fastening stability
- Electrically insulating, non-magnetic, and chemical-resistant, ideal for non-metal fastener systems
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In electronics, machinery, and industrial equipment, tightening screws or bolts directly against component surfaces can create localized stress.
Over time, this may cause resin materials to crack or fastening points to loosen.
PPS/W was developed to act as an intermediary component that evenly distributes clamping force while maintaining heat resistance and electrical safety.
Although small in size, the correct washer plays a critical role in overall fastening system durability.
PPS/W helps reduce cumulative surface damage, improves tightening stability, and enables reliable long-term operation in demanding engineering environments.
PPS/W is a flat washer for metric fastening systems, compatible with both PPS and metal screws and nuts.
The PPS material provides high mechanical strength, low moisture absorption, and excellent dimensional stability at elevated temperatures.
When placed between the screw head or nut and the mating surface, PPS/W distributes compressive load, reduces embedding of the fastener head, and minimizes deformation of resin components or insulating panels.
🔷 Dimensions (d × D × t)
PPS/W is available in multiple sizes based on screw diameter, defined by the following parameters:
- d = inner diameter
- D = outer diameter
- t = washer thickness
Available sizes include:
- DN 3: d×D = 3.2×7 mm, t = 0.5 mm
- DN 4: 4.3×9 mm, t = 0.8 mm
- DN 5: 5.3×10 mm, t = 1.0 mm
- DN 6: 6.4×12.5 mm, t = 1.6 mm
- DN 8: 8.4×17 mm, t = 1.6 mm
- DN 10: 10.5×21 mm, t = 2.0 mm
- DN 12: 13×24 mm, t = 2.5 mm
These dimensions are optimized for effective load distribution and allow stable use with both PPS and metal fasteners within the same system.
🔷 Engineering Advantages
- Distributes clamping force and reduces surface damage
- Continuous heat resistance up to 200°C (392°F)
- Flame-retardant rating UL94 V-0
- Electrically insulating and non-magnetic
- Resistant to corrosion and chemical exposure
- Lightweight, suitable for precision assemblies and clean environments
🔷 Typical Applications
PPS/W is commonly used with PPS/BT, PPS/CB, PPS/PH, and PPS/NT in electrical equipment, electronic modules, machinery near heat sources, and systems requiring non-metal fastener solutions.
📘 Summary
PPS/W is a washer designed for technical applications requiring stable load distribution, heat resistance, and electrical safety.
It helps extend fastening service life and improves the overall reliability of engineering systems.
For further details, please contact the sales department or download the relevant technical documentation through the designated channels.
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❓ FAQ
Q1: Is PPS/W required to be used only with PPS screws?
A1: No. PPS/W can also be used with metal screws when electrical insulation or corrosion reduction is required.
Q2: How should washer thickness (t) be selected?
A2: Thickness should be selected based on the required load distribution and the strength of the mating surface.
📚 Glossary (Key Terms)
- PPS (Polyphenylene Sulfide): An engineering plastic offering high mechanical strength and heat resistance
- Flat Washer: A flat washer used to distribute compressive load between a screw/nut and the mating surface
- UL94 V-0: Flame-retardancy standard for materials (detailed specifications not provided)
📖 Reference
[1] Latest General Catalog 2024- – Nippon Chemical Screw Co., Ltd. –
🔒 Trust
All information in this article is based on technical documentation and manufacturing quality control processes of Nippon Chemical Screw Co., Ltd., ensuring engineering accuracy.
#PPSWasher #PlasticWasher #HighTemperatureApplication #NonMetalFastener #EngineeringComponents
#PPS #EngineeringFastener #UL94V0 #IndustrialDesign #PrecisionAssembly
📆 Updated: 2026-01-06
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Measuring machinery / Industrial machinery / Medical equipment
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Plastic Screw / Resin Screw / Plastic Spring / Resin Spring / Resin Molded Product
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Nippon Chemical Screw Co., Ltd. specializes in the development and production of plastic fasteners made from high-performance resins. Our products are designed for environments that demand insulation, ...
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