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PPS/LC ｜ PPS Hexagon Socket Low Head Cap Screw for Space-Constrained Applications
🌟 Key Takeaways
- PPS/LC is a hexagon socket low head cap screw manufactured from Polyphenylene Sulfide (PPS)
- Supports continuous operating temperatures up to 200°C (392°F) and complies with UL94 V-0
- Low-head structure reduces protrusion above the surface, ideal for space-limited designs
- Electrically insulating, non-magnetic, and chemical-resistant, suitable for high-density engineering applications
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In electronics, high-density machinery, and compact industrial modules, screw head height often becomes a critical design and assembly constraint.
Standard socket head screws may interfere with surrounding components or require excessive clearance.
PPS/LC was developed to reduce screw head height while maintaining the fastening performance and material durability of PPS.
Reducing mechanical dimensions should not compromise functionality.
PPS/LC enables designers to achieve more compact structures without sacrificing stability or operational safety.
PPS/LC is a hexagon socket low head cap screw tightened using an internal hex key.
The screw head is designed with a reduced height (H) compared to standard socket head screws, minimizing interference with adjacent components.
The PPS material provides high mechanical strength, low moisture absorption, and excellent dimensional stability at elevated temperatures, making PPS/LC suitable for applications requiring minimal clearance and continuous operation.
🔷 Thread Pitch (Metric Coarse)
PPS/LC uses standard metric coarse threads for compatibility with common fastening systems.
- M3 = 0.50 mm
- M4 = 0.70 mm
- M5 = 0.80 mm
- M6 = 1.00 mm
🔷 Head Dimensions (Low Head : D × H)
The head dimensions are defined to be lower than standard socket heads to save installation space.
- M3: 5.5 × 2.0 mm
- M4: 7.0 × 2.8 mm
- M5: 8.5 × 3.5 mm
- M6: 10.0 × 4.0 mm
The reduced H minimizes head protrusion above the surface, while D remains sufficient for proper load distribution.
🔷 Hex Socket Size (B)
- M3: 2.0 mm
- M4: 2.5 mm
- M5: 3.0 mm
- M6: 4.0 mm
Selecting the correct B size ensures consistent torque transmission even with a reduced head height.
🔷 Engineering Advantages
- Extra-low head design for space-constrained applications
- 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
- Suitable for precision assemblies and clean design concepts
🔷 Typical Applications
PPS/LC is suitable for high-density electronic modules, electrical equipment near heat sources, machinery components requiring reduced screw head height, and non-metal fastener systems with limited installation space.
📘 Summary
PPS/LC is a hexagon socket low head cap screw designed for technical applications requiring compact design, heat resistance, and electrical safety.
It is ideal for space-constrained engineering designs where fastening stability remains essential.
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❓ FAQ
Q1: What is the difference between PPS/LC and PPS/CB?
A1: PPS/LC has a lower head height for space-limited applications, while PPS/CB uses a standard head and supports higher tightening torque.
Q2: Can PPS/LC be tightened to the same torque as standard socket head screws?
A2: Low head designs have torque limitations. PPS/LC should be used within the recommended torque range specified in technical documentation.
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📚 Glossary (Key Terms)
- PPS (Polyphenylene Sulfide): An engineering plastic offering high mechanical strength and heat resistance
- Hexagon Socket Low Head Cap Screw: A socket head screw designed with reduced head height to minimize installation space
- 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.
#PPSscrew #LowHeadScrew #SpaceConstrainedDesign #EngineeringComponents #ElectronicsIndustry
#PlasticScrew #PPS #LowHeadBolt #EngineeringFastener #UL94V0
📆 Updated: 2026-01-07
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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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