PVDF Hexagon socket bolts
PVDF Hexagon socket bolts is a polymer engineering plastic with excellent chemical and weather resistance, and excellent UV resistance and aging resistance.
M Size: M3-M8
peek plastic material: PVDF Polyvinylidene fluoride
product Type: Hexagon socket head bolt
Finish: Natural/Black/Other Colors(Customizable)
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PVDF Hexagon socket bolts Overview
PVDF (Polyvinylidene Fluoride) Hexagon Socket Head Bolt (or Socket Head Cap Screw) is a premium, high-performance fluoropolymer fastener that combines exceptional purity and chemical resistance with a drive system that allows for controlled, high-torque installation. The Hexagon Socket (Allen drive) minimizes recess damage and is ideal for secure, compact assemblies in the most aggressive environments.
I. Overview and Design
| Feature | Detail | Purpose |
| Material (PVDF) | Polyvinylidene Fluoride. A high-performance fluoropolymer with high stiffness, abrasion resistance, and excellent resistance to UV, chemicals, and radiation. | Ensures chemical inertness, UV stability, and minimal contamination in highly critical systems. |
| Head Style (Cylindrical Socket Head) | A tall, cylindrical head with a flat top. | Provides a large bearing surface and maximum shear resistance for a PVDF screw. |
| Drive Style (Hexagon Socket) | The Allen drive recess. | Allows for the maximum installation torque achievable with PVDF, minimizing the risk of recess damage during installation. |
Product Parameters
PVDF Hexagon Socket Head Bolts 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
PVDF Socket Head Bolts are selected for their combination of purity, toughness, and enhanced drive system:
Exceptional Chemical Resistance: Highly inert and resistant to halogens (chlorine), strong acids, and oxidizers.
Superior UV and Weather Resistance: Maintains color and mechanical properties indefinitely under direct sunlight.
Highest Torque for PVDF: The socket drive allows for the strongest, most controlled tightening possible, optimizing the material’s mechanical limit.
High Purity: Does not leach contaminants, vital for ultrapure water (UPW) systems and sensitive processes.
Good Mechanical Strength: High stiffness and abrasion resistance, with excellent resistance to creep (deformation under sustained load).
Key Polyether Ether Ketone (PEEK) Properties
Applications
PVDF Hexagon Socket Head Bolts are critical in demanding applications where secured, non-contaminating, and chemical-resistant fastening is paramount, especially where space is constrained:
Semiconductor Manufacturing: Structural fastening of components, manifolds, and piping within wet benches and ultrapure water (UPW) systems.
Chemical Processing: Securing high-purity flanges, vessel lids, and filters exposed to strong chemicals in limited access areas.
Aerospace/Aviation: Used for weight-sensitive, non-metallic fastening where superior chemical and weather resistance is required.
Pharmaceutical and Biotech: Fastening equipment components that require high purity and must withstand aggressive cleaning agents and sanitizers.
Advantages
| Category | Advantage (Pro) | Disadvantage (Con) |
| Performance | Best-in-class UV, chemical, and purity profile. Socket drive allows for high, controlled torque. | High Cost: Significantly more expensive than standard engineering plastics. |
| Design | Allows for compact assembly as no external wrench clearance is required. High shear resistance. | Lower Thermal Limit: Max service temperature (150°C) is lower than PEEK (260°C). |
| Environmental | Long-term outdoor durability. Non-corrosive, non-magnetic, and non-conductive. | Requires specialized tools (Allen key) for installation. |
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.