PPS Hexagon head bolt
PPS Hexagon head bolts are made of a hard, highly rigid material with excellent heat resistance, chemical resistance, and dimensional stability.
M Size: M3-M8
peek plastic material: Polyetherether ketone(PPS)
product type: Hexagon head bolt
Finish: Natural/Black/Other Colors(Customizable)
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PPS Hexagon head bolt Overview
PPS (Polyphenylene Sulfide) Hexagon Head Bolt is a high-performance, structural plastic fastener known for its exceptional chemical resistance, high mechanical stiffness, and excellent thermal stability (up to 220°C). The Hexagon Head design allows for high, controlled tightening, making it suitable for secure, load-bearing assemblies in extremely harsh environments where conventional plastics or metals would fail.
I. Overview and Design
| Feature | Detail | Purpose |
| Material (PPS) | Polyphenylene Sulfide. A semicrystalline polymer known for its high mechanical strength, high dimensional stability, and superior thermal performance. | Ensures the fastener maintains structural integrity and chemical immunity in extreme operating conditions. |
| Head Style (Hex Head) | Standard six-sided external head. | Designed for maximum wrench grip, allowing for the highest installation torque achievable with PPS, enabling secure clamping. |
Product Parameters
PPS Hexagon Head Bolts typically follow established metric standards for hexagon head bolts, such as ISO 4014 (partially threaded) or ISO 4017 (fully threaded).
| Nominal Diameter (d) | Thread Pitch (P) | Across Flats (s) | Head Height (k) |
| M5 | 0.8 mm | 8.0 mm | 3.5 mm |
| M6 | 1.0 mm | 10.0 mm | 4.0 mm |
| M8 | 1.25 mm | 13.0 mm | 5.3 mm |
| M10 | 1.5 mm | 16.0 mm | 6.4 mm |
| M12 | 1.75 mm | 18.0 mm | 7.5 mm |
| M16 | 2.0 mm | 24.0 mm | 10.0 mm |
Key Features
PPS fasteners are selected for their combination of high stiffness, strength, and superior environmental performance:
High Thermal Stability: Maintains strong mechanical properties at continuous operating temperatures up to 220°C (428°C).
Exceptional Chemical Resistance: Highly resistant to a vast range of aggressive solvents, fuels, and acids, offering near-universal chemical immunity.
High Mechanical Stiffness: Very rigid, offering excellent resistance to creep (deformation under sustained load) and maintaining thread engagement at high temperatures.
Dimensional Stability: Low thermal expansion and minimal moisture absorption compared to materials like Nylon.
Non-Conductive & Non-Magnetic: Essential for electrical and sensitive instrumentation assemblies.
Key Polypropylene (PP) Properties
Applications
PPS Hexagon Head Bolts are critical in industrial applications exposed to severe environments:
Automotive: Securing engine components, transmission parts, and fluid systems where high heat, engine oil, and fuels are present.
Chemical Processing: Structural fastening of pumps, valves, and piping in systems handling aggressive chemicals at elevated temperatures.
Electrical Equipment: Mounting heavy electrical components, busbars, and insulators in high-heat environments.
Ovens and Sterilizers: Used in internal fixtures requiring long-term resistance to heat, steam, and hot water.
Advantages
| Category | Advantage (Pro) | Disadvantage (Con) |
| Performance | Superior chemical and thermal resistance over standard engineering plastics. High rigidity and excellent creep resistance. | Lower Impact Strength: More brittle than Nylon or PC; care must be taken during high-impact loading. |
| Design | Hex Head allows for the maximum installation torque achievable with PPS, enabling strong clamping. | Higher Cost: More expensive than standard polymers, though often more cost-effective than PEEK for similar performance. |
| Material | Lightweight, non-corrosive, excellent dimensional stability. | Limited temperature range compared to PEEK ($260^\circ \text{C}$), but still exceptionally high. |
Packaging & Delivery
Standard packaging includes PE bag, foam cover, and one double-deck corrugated outer carton for safety during transit. Delivery time is 5-15 working days depending on the quantity.