PPS Slotted cheese head screw
PPS Slotted cheese head screw are made of a hard, highly rigid material with excellent heat resistance, chemical resistance, and dimensional stability.
M Size: M2-M10
peek plastic material: Polyetherether ketone(PPS)
product type: Cylinder head bolts
color: Natural/Black/Other Colors(Customizable)
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PPS Slotted cheese head screw Overview
PPS (Polyphenylene Sulfide) Slotted Cheese Head Screw is a high-performance plastic screw known for its exceptional chemical and thermal resistance combined with high mechanical stiffness. The Cheese Head (Cylindrical Head) design provides maximum material volume in the head for superior shear strength, while the Slotted Drive allows for conventional installation.
I. Overview and Design
| Feature | Detail | Purpose |
| Material (PPS) | Polyphenylene Sulfide. A semicrystalline polymer with high mechanical strength, dimensional stability, and service temperature up to 220°C. | Ensures the fastener maintains structural integrity and chemical immunity under extreme conditions. |
| Head Style (Cheese/Cylindrical Head) | A tall, cylindrical head with a large diameter. | Maximizes the head’s material volume and bearing surface, providing excellent shear strength and resistance to lateral forces. |
| Drive Style (Slotted) | A simple single slot on the top surface. | Allows for easy installation and removal using a flat-blade screwdriver; suitable for low-to-moderate torque applications. |
Product Parameters
PPS Slotted Cheese Head Screws typically follow metric standards for slotted cheese head screws, such as ISO 1207 (Slotted Cheese Head Screws) or similar industry specifications.
| Nominal Diameter (d) | Thread Pitch (P) | Head Diameter (D) | Head Height (K) | Slot Width (N) |
| M3 | 0.5 mm | 5.5 mm | 2.4 mm | 0.8 mm |
| M4 | 0.7 mm | 7.0 mm | 3.2 mm | 1.0 mm |
| M5 | 0.8 mm | 8.5 mm | 4.0 mm | 1.2 mm |
| M6 | 1.0 mm | 10.0 mm | 5.0 mm | 1.6 mm |
| M8 | 1.25 mm | 13.0 mm | 6.0 mm | 2.0 mm |
| M10 | 1.5 mm | 16.0 mm | 8.0 mm | 2.5 mm |
Key Features
The combination of the Cheese Head design and PPS material provides a high-performing fastener:
Superior Environmental Resistance: Maintains integrity at continuous temperatures up to 220°C and resists a vast range of aggressive chemicals, solvents, and fuels.
High Shear Strength: The robust cylindrical head profile offers excellent resistance to lateral (shear) forces for a polymer fastener.
High Rigidity and Creep Resistance: Highly dimensionally stable, maintaining thread engagement and clamping force even under sustained load at high heat.
Non-Conductive & Non-Magnetic: Essential for electrical and sensitive instrumentation assemblies.
Hydrolysis Resistance: Excellent performance when exposed to hot water or steam.
Key Polypropylene (PP) Properties
Applications
PPS Slotted Cheese Head Screws are critical in industrial applications exposed to severe environments:
Chemical Processing: Structural fastening in pumps, filters, and fluid systems handling hot or corrosive chemicals.
High-Heat Electronics: Mounting insulators, sensors, and components in environments subject to prolonged temperatures up to 220°C.
Industrial Controls: Securing enclosures and internal components in machinery exposed to aggressive fluids, oils, or solvents.
Ovens and Drying Equipment: Used for internal fixtures and access panels that must withstand heat and steam.
Advantages
| Category | Advantage (Pro) | Disadvantage (Con) |
| Performance | Best-in-class chemical and thermal resistance for this price point. Robust head provides high shear resistance. | Lower Impact Strength: More brittle than Nylon or PC; risk of fracture under high-impact loading. |
| Material | High stiffness, excellent dimensional stability, and non-corrosive. | Slotted Drive Limitation: Provides low torque transmission; easily stripped if over-torqued. |
| Cost | More economical than PEEK for similar performance requirements. | Higher cost than standard engineering plastics (Nylon, PVC). |
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.