PP Socket Head Cap Screw
PP socket head cap screw is a lightweight engineering plastic fastener designed for applications requiring corrosion resistance, electrical insulation, moisture resistance, and economical fastening performance. The PP socket head cap screw is manufactured from polypropylene (PP), a thermoplastic material known for its low density, good chemical resistance, and excellent performance in humid and water-based environments.
The PP socket head cap screw features a cylindrical head with an internal hex (Allen) drive, allowing controlled tightening using hex keys. It is widely used in electrical equipment, water treatment systems, plastic assemblies, household appliances, agricultural machinery, laboratory fixtures, packaging equipment, and OEM manufacturing where metal fasteners are not required.
Product Overview
The PP socket head cap screw is engineered for light-duty fastening applications that require non-corrosive and electrically insulating performance. Its cylindrical head provides a stable bearing surface, while the internal hex drive allows better torque control compared to slotted or Phillips designs.
Compared with metal socket screws, the PP socket head cap screw does not rust, is lightweight, and performs well in humid or mildly corrosive environments. It is especially suitable for plastic enclosures, water-related equipment, and general industrial assemblies.
As a cost-effective industrial fastener, the PP socket head cap screw is widely used in OEM production where economy and corrosion resistance are key requirements.
Product Specifications
| Item | Description |
|---|---|
| Standard | DIN / ISO / Custom |
| Product Name | PP Socket Head Cap Screw |
| Material | PP (Polypropylene) |
| Thread Type | Metric Machine Thread / Custom |
| Head Type | Cylindrical Socket Head |
| Drive Type | Internal Hex / Allen |
| Diameter Range | M3–M12 |
| Length Range | 6mm–100mm |
| Surface Finish | Natural / White / Black / Custom Colors |
| Strength Grade | Engineering Plastic Fastener |
| Thread Direction | Right Hand |
| Packaging | Bag, carton, tray, OEM packaging |
| Customization | Size, length, color, head dimensions, packaging |
Technical Parameters
| Parameter | Value |
|---|---|
| Tensile Strength | 25–35 MPa |
| Yield Strength | Material dependent |
| Hardness | Shore D 60–75 |
| Density | Approx. 0.90 g/cm³ |
| Corrosion Resistance | Good (water, mild acids and alkalis) |
| Operating Temperature | -10°C to 90°C |
| Electrical Insulation | Excellent |
| Manufacturing Standard | DIN / ISO / OEM drawing |
Materials and Manufacturing Process
The PP socket head cap screw is produced using precision injection molding technology to ensure stable quality and dimensional accuracy.
Production starts with high-quality polypropylene resin, selected for its chemical resistance and lightweight characteristics. The material is dried and processed under controlled conditions to ensure stable molding performance.
Injection molding forms the cylindrical head, internal hex socket, threaded shank, and screw body in one step. Controlled cooling ensures dimensional stability and reduces deformation.
After molding, each PP socket head cap screw undergoes trimming, cleaning, and full inspection. Final checks include thread accuracy, socket depth, head diameter, surface quality, and packaging verification.
Applications of the Product
PP socket head cap screws are widely used in:
- Electrical equipment housings
- Water treatment systems
- Household appliances
- Packaging machinery
- Agricultural equipment
- Plastic assemblies
- Laboratory instruments
- Light industrial machinery
- Automotive interior components
- Chemical-resistant assemblies
- OEM manufacturing systems
- General industrial fastening
They are especially suitable for assemblies requiring better torque control and repeated maintenance.
Why Choose This Product
- Lightweight polypropylene material
- Excellent corrosion and moisture resistance
- Good chemical resistance (acids and alkalis)
- Electrical insulation performance
- Internal hex drive for better torque control
- Cost-effective mass production
- Non-metallic and rust-free
- Stable performance in humid environments
- OEM/ODM customization support
- Bulk supply capability
- Fast global delivery
The PP socket head cap screw is an ideal solution for economical, lightweight, and corrosion-resistant fastening applications.
Why Choose Flybear
Flybear specializes in manufacturing industrial fasteners and engineering plastic fastening solutions.
Our advantages include:
- Advanced injection molding technology
- Strong production capacity and inventory
- OEM/ODM customization based on drawings or samples
- Professional engineering support
- Global supply capability
- Strict ISO quality management system
- Extensive export experience
- Fast delivery and responsive service
Flybear provides reliable fastening solutions for OEM manufacturers, distributors, EPC contractors, and industrial buyers worldwide.
Quality Inspection and Control
Every production batch undergoes strict inspection, including:
- Raw material verification
- Dimensional inspection
- Socket (hex) inspection
- Thread gauge inspection
- Surface quality inspection
- Hardness testing
- Packaging inspection
All products are manufactured under ISO quality management standards to ensure consistent quality.
Selection Guide
When selecting PP socket head cap screws, consider:
- Thread size and length
- Load requirements
- Chemical exposure level
- Operating temperature
- Indoor or outdoor use
- Moisture conditions
- Installation torque requirements
For higher strength or temperature resistance, materials such as PA66, PVDF, or PTFE may be more suitable.
FAQ
1. What is PP material?
PP (Polypropylene) is a lightweight plastic with good chemical resistance and moisture resistance.
2. Can PP socket screws handle high torque?
They are suitable for light-duty applications with controlled torque.
3. Are PP screws suitable for outdoor use?
Yes, but long-term UV exposure and high temperatures should be considered.
4. Can custom sizes be produced?
Yes. Flybear supports OEM/ODM customization for size, color, and packaging.
5. How to request a quotation?
Provide size, quantity, application, drawings (if available), and packaging requirements.
The PP socket head cap screw combines lightweight construction, corrosion resistance, and cost efficiency, making it an ideal fastening solution for water systems, electrical equipment, and general industrial applications.
We always adhere to the philosophy of quality first and customer first, providing customers with high-quality fastener products and one-stop fastener solutions.
For quotations, customization, and technical support, please Contact Us.
