Outstanding chemical resistance at elevated temperatures
- Virtually inert to most organics, acids and bases
- Usable up to 260°C / 500°F and tougher than PTFE
- Excellent electrical insulator
- High purity for sensitive pharmaceutical and food type applications
- PFA socket head cap screw features and benefits
PFA socket head cap screws made from perfluoroalkoxy alkanes (PFAs) are fluoropolymers with properties similar to polytetrafluoroethylene (PTFE). PFA's are known for being exceptionally corrosion resistant and inert at elevated temperatures. PFA socket head cap screws are inert to most chemical environments including organics, acids, bases, mixed chemicals and hyrdofluoric acid. Additionally PFA socket head cap screws are bio-inert and will not leach into or contaminate sensitive pharmaceuticals or food based products.
Compared to other high performance polymer socket head cap screws like PEEK or PVDF, PFA socket head cap screws offer the best all-around corrosion resistance especially at elevated temperatures. However the trade-off for its extraordinary corrosion resistance is its lower tensile strength compared to PVDF or PEEK socket head cap screws.
When it comes to PFA socket head cap screws, it’s all about clearance. These screws are the best choice for applications with limited installation access or clearance. Yet if you have an application with a lot of debris, you may want to select a PFA hex head bolt or hex head cap screw, as they don’t have a socket drive which could get clogged.
- Ideal for applications with limited access as they require very little clearance around the fastener.
- Socket head cap screws can be used in locations where externally wrenched fasteners aren't desirable.
- Weight reduction on application as PFA socket head cap screws are smaller – being that the cylindrical heads of socket screws need less space than hex heads and require no additional wrench space.
- Also known for safety, reliability and economy.