PVDF Hexagonal bolts
PVDF Hexagonal 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 head bolt
Finish: Natural/Black/Other Colors(Customizable)
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PVDF Hexagonal bolts Overview
PVDF (Polyvinylidene Fluoride) Hexagon Head Bolt is a premium, high-performance fluoropolymer fastener renowned for its exceptional purity, superior chemical resistance (especially to halogens and strong oxidizers), and outstanding UV and weather resistance. The Hexagon Head design allows for external wrench tightening, enabling controlled and secure clamping forces for non-metallic structural assemblies in the harshest environments.
I. Overview and Design
| Feature | Detail | Purpose |
| Material (PVDF) | Polyvinylidene Fluoride. A semicrystalline 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 (Hex Head) | Standard six-sided external head. | Designed for maximum wrench grip, allowing for the highest controlled torque and clamping force achievable with PVDF. |
Product Parameters
PVDF Hexagon Head Bolts typically follow established metric standards for hexagon head bolts, such as ISO 4014 (partially threaded) or ISO 4017 (fully threaded).
| Nominal Diameter (d) | Thread Pitch (P) | Across Flats (s) | Head Height (k) |
| M5 | 0.8 mm | 8.0 mm | 3.5 mm |
| M6 | 1.0 mm | 10.0 mm | 4.0 mm |
| M8 | 1.25 mm | 13.0 mm | 5.3 mm |
| M10 | 1.5 mm | 16.0 mm | 6.4 mm |
| M12 | 1.75 mm | 18.0 mm | 7.5 mm |
| M16 | 2.0 mm | 24.0 mm | 10.0 mm |
Key Features
PVDF Hexagon Head Bolts are selected for their combination of purity, toughness, and extreme environmental resilience:
Exceptional Chemical Resistance: Resists halogens (chlorine, fluorine), strong oxidizers (like nitric acid), and many solvents that attack other plastics.
Superior UV and Weather Resistance: Maintains color and mechanical properties indefinitely under direct sunlight and outdoor exposure, ideal for long-term external use.
High Purity: Does not leach contaminants, making it vital for ultrapure water (UPW) systems and semiconductor manufacturing.
Good Mechanical Strength: High stiffness, high abrasion resistance, and excellent resistance to creep (deformation under sustained load).
Thermal Stability: Service temperature up to 150°C.
Key Polyether Ether Ketone (PEEK) Properties
Applications
PVDF Hexagon Head Bolts are critical in demanding applications where secured, non-contaminating, and chemical-resistant fastening is paramount:
Semiconductor Manufacturing: Structural fastening of components, manifolds, and piping in highly corrosive wet benches and ultrapure water (UPW) systems.
Chemical Processing: Securing high-purity flanges, vessels, and filters exposed to halogens, strong oxidizers, and various aggressive media.
Outdoor Chemical Storage: Used for external mounting and securing fittings where long-term UV resistance and chemical immunity are 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 among engineering plastics. High abrasion resistance. | High Cost: Significantly more expensive than standard engineering plastics (Nylon, PP) and PVC. |
| Design | Hex Head allows for the highest controlled tightening and clamping force achievable with PVDF. | Mechanical Strength: Lower tensile strength and thermal limit compared to PEEK (260°C). |
| Environmental | Long-term outdoor durability. Non-corrosive, non-magnetic, and non-conductive. | Requires controlled installation torque to prevent thread damage. |
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.