PVDF Slotted Countersunk Head Screw
PVDF Slotted Countersunk Head Screw is a precision plastic fastener designed for flush installation in corrosive and electrically sensitive environments. Made from polyvinylidene fluoride, it offers strong chemical resistance, low moisture absorption, and reliable insulation performance. This screw is suitable for equipment where metal fasteners may rust, conduct electricity, or react with chemicals.
Product Overview
The PVDF Slotted Countersunk Head Screw features a flat countersunk head, slotted drive, and metric thread. Once installed, the head sits flush with the mounting surface, helping create a clean and low-profile assembly.
This PVDF Slotted Countersunk Head Screw is widely used in chemical equipment, semiconductor systems, laboratory instruments, water treatment units, marine components, and electronic housings. It is often selected as a plastic screw, PVDF fastener, chemical resistant screw, insulating fastener, non-metallic screw, and OEM fastener for demanding industrial applications.
Product Specifications
| Item | Specification |
|---|---|
| Standard | DIN / ISO / Custom |
| Product Name | PVDF Slotted Countersunk Head Screw |
| Material | PVDF |
| Thread Type | Metric Full Thread |
| Head Type | Countersunk Head / Flat Head |
| Drive Type | Slotted Drive |
| Diameter Range | M2–M12 or Custom |
| Length Range | 4–100 mm or Custom |
| Surface Finish | Natural PVDF |
| Strength Grade | Engineering Plastic Grade |
| Thread Direction | Right-Hand Thread |
| Packaging | Bag, Box, Carton, Pallet |
| Customization | Size, Thread, Head Angle, Length, Packaging |
Technical Parameters
| Parameter | Value |
|---|---|
| Tensile Strength | Approx. 35–55 MPa |
| Yield Strength | Depends on size and structure |
| Hardness | Shore D 75–80 |
| Density | Approx. 1.78 g/cm³ |
| Corrosion Resistance | Excellent |
| Operating Temperature | Approx. -40°C to 150°C |
| Thread Tolerance | Standard Metric or Custom |
| Manufacturing Standard | DIN, ISO, or Customer Drawing |
Materials and Manufacturing Process
Production starts with selected PVDF raw material for stable mechanical strength and chemical resistance. Each material batch is checked before manufacturing to confirm appearance, consistency, and processing suitability.
The screw blank can be produced by precision molding or CNC machining. Then, the countersunk head profile, slotted drive, and thread are formed with controlled dimensions. Thread cutting or rolling is selected according to size and application needs.
After forming, each screw is deburred and cleaned. Inspection includes head angle, slot depth, thread accuracy, length, diameter, and surface quality. Finally, products are packed according to order requirements to protect the screws during storage and transport.
Applications of the Product
PVDF Slotted Countersunk Head Screws are used where flush mounting, corrosion resistance, and insulation are required. In chemical processing equipment, they help prevent corrosion caused by acids, alkalis, salts, and solvents. In semiconductor equipment, they support clean and non-metallic assembly.
They are also suitable for construction systems, machinery, renewable energy equipment, petrochemical equipment, marine assemblies, food equipment, industrial equipment, manufacturing systems, laboratory devices, and electronic products. Therefore, they provide a practical fastening solution for engineering plastic assemblies and harsh environments.
Why Choose This Product
The PVDF Slotted Countersunk Head Screw provides a smooth installed surface, which reduces protrusions and improves assembly appearance. Its PVDF material offers strong chemical stability, good UV resistance, electrical insulation, and long service life.
In addition, the slotted drive allows simple installation with standard tools. The metric full thread design improves fastening engagement. For OEM projects, custom diameter, length, head angle, and packaging can be supplied according to drawings or samples.
Why Choose Flybear
Flybear supplies industrial fasteners and custom fastening components for OEM manufacturers, distributors, equipment builders, and engineering users. We support standard inventory, custom production, engineering consultation, and export packaging.
Our manufacturing capability covers plastic fasteners, stainless steel fasteners, metric bolt products, and special OEM fasteners. With stable supply ability and technical support, Flybear helps customers select reliable fastening solutions for real working conditions.
Quality Inspection and Control
Each PVDF Slotted Countersunk Head Screw is inspected before shipment. Quality control may include chemical composition analysis, tensile testing, hardness testing, salt spray reference testing, thread gauge inspection, dimensional inspection, surface inspection, and packaging inspection.
Key dimensions such as head diameter, countersunk angle, slot width, screw length, and thread profile are checked carefully. Production follows ISO quality system compliance to support stable batch quality and traceability.
Selection Guide
When selecting this screw, confirm the material type, diameter, thread pitch, length, head angle, and countersink hole size. Load requirements should also be reviewed because plastic screws have different mechanical limits from metal screws.
For indoor use, standard PVDF may meet most requirements. For outdoor, marine, petrochemical, or high-corrosion environments, check the chemical media, temperature range, UV exposure, and corrosion level before ordering.
FAQ
What is a PVDF Slotted Countersunk Head Screw?
It is a PVDF plastic screw with a flat countersunk head and slotted drive for flush installation.
Why use a countersunk head screw?
A countersunk head sits flush with the surface, making it useful for low-profile and clean assemblies.
Is PVDF resistant to rust and chemicals?
PVDF does not rust like metal and offers excellent resistance to many acids, alkalis, salts, and solvents.
Can custom sizes be produced?
Yes. Custom diameter, length, thread pitch, head angle, slot size, and packaging can be produced.
How to request quotation?
Please provide size, drawing, quantity, material requirement, and application details for accurate pricing.
For quotation, customization, and technical support, please Contact Us.
We always adhere to the philosophy of quality first and customer first, providing customers with high-quality fastener products and one-stop fastener solutions.
