PP Hexagon socket head screw
PP Hexagon socket head screw has a specific gravity of 0.9, which is the lightest among plastics; it has excellent mechanical properties, good chemical stability; excellent electrical properties, and is resistant to high-frequency electrical insulation.
M Size: M3-M12
peek plastic material: PP Polypropylene
product type: Hexagon socket head bolt
color: Natural/Black/Other Colors(Customizable)
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PP Hexagon socket head screw Overview
PP (Polypropylene) Hexagon Socket Head Screw is a highly versatile and economical plastic screw primarily known for its exceptional chemical resistance to a wide array of acids, bases, and organic solvents. The Hexagon Socket (Allen drive) allows for more controlled and higher tightening forces than simple slotted drives, maximizing the secure assembly of non-metallic joints in corrosive environments.
I. Overview and Design
| Feature | Detail | Purpose |
| Material (PP) | Polypropylene. A semicrystalline thermoplastic known for its rigidity, toughness, and superior chemical resistance. | Provides a cost-effective fastener that is immune to rust, corrosion, and many aggressive chemicals. |
| Head Style (Cylindrical Socket Head) | A tall, cylindrical head with a flat top. | Provides a large bearing surface and maximum shear resistance for a PP screw. |
| Drive Style (Hexagon Socket) | The Allen drive recess. | Allows for the maximum installation torque achievable with PP, minimizing the risk of recess damage during installation. |
Product Parameters
PP Hexagon Socket Head Screws typically follow metric standards for socket head cap screws, such as ISO 4762 (equivalent to DIN 912).
| Nominal Diameter (d) | Thread Pitch (P) | Head Diameter (D) | Head Height (K) | Socket Size (S) |
| M4 | 0.7 mm | 7.0 mm | 4.0 mm | 3.0 mm |
| M5 | 0.8 mm | 8.5 mm | 5.0 mm | 4.0 mm |
| M6 | 1.0 mm | 10.0 mm | 6.0 mm | 5.0 mm |
| M8 | 1.25 mm | 13.0 mm | 8.0 mm | 6.0 mm |
| M10 | 1.5 mm | 16.0 mm | 10.0 mm | 8.0 mm |
| M12 | 1.75 mm | 18.0 mm | 12.0 mm | 10.0 mm |
Key Features
PP Hexagon Socket Head Screws are primarily defined by their chemical resistance and enhanced drive system:
Excellent Chemical Resistance: Offers superior resistance to a vast range of inorganic and organic chemicals, acids, and alkalis.
Corrosion Immunity: Will not rust or cause galvanic corrosion, lasting indefinitely in chemical or wet atmospheres.
Highest Torque for PP: The Hexagon Socket drive allows the screw to be tightened to the material’s maximum strength limit without damaging the recess.
Cost-Effective: One of the most economical corrosion-resistant fasteners available.
Non-Conductive: Provides reliable electrical insulation.
Key Polypropylene (PP) Properties
Applications
PP Hexagon Socket Head Screws are commonly used in applications prioritizing chemical resistance, cost, and a secure, tamper-resistant drive over high mechanical strength:
Chemical Processing: Securing components and access points in tanks, filters, and piping systems handling corrosive liquids at ambient temperatures.
Water Treatment: Fastening components in water purification, deionization, and pool systems.
Laboratory Equipment: Assembling non-critical fixtures, racks, and enclosures in damp or chemical lab environments where corrosion is a major concern.
Electrical Assemblies: Used to mount non-critical electrical components where non-conductivity is required.
Advantages
| Category | Advantage (Pro) | Disadvantage (Con) |
| Performance | Superior chemical resistance to a broad range of substances. High rigidity and cost-effectiveness. | Low Mechanical Strength: Cannot withstand high tensile loads; threads are easily stripped if over-torqued. |
| Material | Lightweight, non-contaminating, and non-corrosive. | Low Temperature Limit: Maximum continuous service temperature is typically low (80°C). |
| Design | Socket drive allows for controlled tightening and reduced head profile compared to a hex bolt. | Poor UV Resistance: Prone to degradation and becoming brittle when exposed to direct sunlight. |
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.