Detail & Specs
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Extreme Strength Class 12 Steel / Coarse Thread
General purpose hexagonal nut; high quality fastener with metric threading.
Class 12 metric hex nuts provide a high tensile fastening solution.
Commonly paired with Class 12.9 metric bolts and screws.
Finishes
Zinc Flake: Temperature Resistant up to 150C (permits use in engine compartments), no risk of hydrogen embrittlement, paintable, resistant to fuel/coolant/oil. ISO 10683 480hrs ISO 9227 NSS. Examples: Delta Protekt KL 100, Geomet 321 A.
Black oxide: minimal corrosion resistance, best for indoor, dry environments. This finish is not suitable for outdoor applications, and will rust when exposed to moisture.
