Electroless Nickel
Electroless nickel deposits a uniform nickel-phosphorus alloy without electric current. It coats threads and recesses evenly and gives hardness, wear and corrosion resistance.
Electroless nickel at a glance
| Specifications | ASTM B733; AMS 2404 |
|---|---|
| Phosphorus | Low, medium or high phosphorus types; high-P gives best corrosion |
| Thickness | Uniform, including in threads |
| Hydrogen risk | Yes: relief bake required on high-hardness steel |
Governing standards: ASTM B733; AMS 2404. Editions shown are the latest confirmed as of September 2026. The drawing and the governing standard always take precedence over this sheet.
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Electroless nickel · autocatalytic nickel-phosphorus
What it is
FIELD IDENTIFICATION
Electroless nickel deposits a uniform nickel-phosphorus alloy without electric current. It coats threads
and recesses evenly and gives hardness, wear and corrosion resistance.
ELECTROLESS NI
Uniform nickel-phosphorus layer
Electroless nickel at a glance
Specifications
ASTM B733; AMS 2404
Phosphorus
Low, medium or high phosphorus types; high-P gives best corrosion
Thickness
Uniform, including in threads
Hydrogen risk
Yes: relief bake required on high-hardness steel
Governing standards: ASTM B733; AMS 2404. Editions shown are the latest confirmed as of September 2026. The drawing and the governing standard always take precedence over
this sheet.
torquing any fastener. Verify the current governing standard, project documents, OEM requirements, size, thread, coating and lot certification. To the fullest extent permitted by law, The Fastener App disclaims liability
arising from reliance on this reference.
Fastener Guide reference FG-C543CA · thefastenerapp.com/fastener-guide/plating-coatings-finishes/electroless-nickel · © The Fastener App. Reference only — verify the current governing standard, drawing and manufacturer data before specifying or installing.

























