CPVC Slotted knurled screw
CPVC Slotted knurled screw material is heat resistant, resistant to corrosion from acids, alkalis, salts, oxidants, etc. The maximum continuous use temperature can reach 90-100°C
M Size: M3-M8
peek plastic material: chlorinatedpolyvinylchloride (CPVC)
product type: Pan head bolts
color: Natural/Black/Other Colors(Customizable)
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CPVC Slotted knurled screw Overview
CPVC (Chlorinated Polyvinyl Chloride) Slotted Knurled Screw is a specialized plastic screw designed for low-torque applications where manual adjustment or frequent removal is necessary. The defining feature is the knurled head, which allows for hand-tightening, combined with the material’s excellent chemical and thermal resistance.
Overview and Design
| Feature | Detail | Purpose |
| Material | CPVC (Chlorinated Polyvinyl Chloride) | Provides chemical resistance, electrical insulation, and better temperature stability than standard PVC. |
| Head Style | Knurled Head | Features vertical or diagonal ridges around the circumference, enabling easy finger-tightening and adjustment without the need for tools. |
| Drive Style | Slotted Drive | Includes a simple single slot on the top surface. While primarily designed for manual use, the slot allows for tool adjustment or final securing with a flat-blade screwdriver if needed. |
| Application | Low-stress fastening and quick-release access panels in corrosive environments. | Ideal for laboratory equipment and fluid control systems requiring frequent, tool-free access. |
Product Parameters
Below is a table illustrating the nominal thread dimensions and typical head proportionality for common market sizes of CPVC Slotted Knurled Screws:
| Nominal Diameter (d) | Thread Pitch (P) | Typical Head Diameter (D) | Typical Head Height (K) | Typical Application Scene |
| M3 | 0.5 mm | 8 mm | 6 mm | Sensor adjustment, Electronic panels |
| M4 | 0.7 mm | 10 mm | 7 mm | Laboratory equipment, Filter housing access |
| M5 | 0.8 mm | 12 mm | 8 mm | Valve locking, Fluid control systems |
| M6 | 1.0 mm | 14 mm | 9 mm | Industrial control cabinets, Inspection windows |
| M8 | 1.25 mm | 18 mm | 12 mm | Pump covers, Large flow control piping |
Key Features
CPVC knurled screws offer a unique combination of manual usability and environmental durability:
Tool-Free Adjustment: The knurled head design is the key feature, allowing for fast, convenient assembly and disassembly by hand.
Chemical Resistance: Excellent stability against most mineral acids, bases, and salts, crucial for chemical storage or processing applications.
Thermal Tolerance: Offers reliable performance at service temperatures higher than standard PVC.
Non-Conductive: Inherently an electrical insulator, making it safe for use near electrical components.
Corrosion Immunity: Immune to rust and galvanic corrosion, which is a significant advantage over metal fasteners.
Applications
- Automotive parts: engine covers, fans, gears
- Mechanical parts: bearings, gears, pulleys.
- Electronic and electronic components: switches, terminal blocks.
- Consumer goods: tool handles, sports equipment.
Advantages and Disadvantages
| Category | Advantage (Pro) | Disadvantage (Con) |
| Design/Usability | Tool-free installation/removal (Hand-tightening). Slotted drive offers backup tool capability. | Knurling limits clamping force; unsuitable for high-load or high-vibration structural applications. |
| Performance | Excellent chemical resistance; Good temperature stability relative to PVC. | Low Mechanical Strength and shear capacity compared to CPVC bolts with hexagon or socket heads. |
| Material | Cost-effective corrosion resistance; Lightweight and non-contaminating. | Slotted drive is prone to cam-out if over-torqued with a tool. |
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.