Complete Material Grade Selection Guide For Pin Tamper Torx Screws, Matching Specification For Charging Piles & Security Equipment

Complete Material Grade Selection Guide For Pin Tamper torx screws, Matching Specification For Charging Piles & Security Equipment

Pin tamper torx screws are adopted by outdoor charging piles and security cabinets to prevent unauthorized disassembly. Four mainstream materials including 201, SUS304, SUS316 stainless steel and galvanized carbon steel show huge gaps in salt spray resistance and mechanical strength. 201 steel screws rust severely within half a year in coastal areas.

1. Core Parameter Comparison Of Four Tamper Screw Materials

Material	Neutral Salt Spray Hours	Shear Strength	Applicable Environment	Outdoor Service Life
SUS201	100h no red rust	Medium	Indoor inland cabinets, short-term indoor equipment	Rust within 6-12 months inland outdoor
SUS304	500h no red rust	Good	Inland charging piles, urban security cabinets	No obvious rust for 3-5 years
SUS316	1500h no red rust	Excellent	Coastal charging piles, seaside monitoring, offshore small cabinets	Stable anti-corrosion for 8-10 years
Galvanized Carbon Steel	300h no red rust	Highest	Sealed indoor static cabinets	White rust within 3 months in humid environment

2. Mandatory Selection Rules For Different Outdoor Scenarios

1. Inland urban charging piles & community security cabinets: SUS304 pin torx screws for balanced cost and corrosion resistance; 2. Coastal seaside charging piles & scenic monitoring: SUS316 is mandatory to resist chloride wind erosion; 3. Indoor weak current cabinets & temporary equipment: Galvanized carbon steel TP screws for cost control; 4. SUS201 is not recommended for low-cost outdoor cabinets, after-sales rust maintenance cost is much higher than material price difference.

3. Assembly & Maintenance Notes For Tamper Torx Screws

1. Use dedicated TP pin bits only, standard torx bits cause recess cracking and slipping; 2. Apply dry anti-corrosion lubricant on threads during coastal equipment assembly to slow seawater vapor erosion; 3. Check surface flash rust during annual inspection, clean and re-coat protective oil if white spots appear.