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topic 8418

Specifying Low-Embrittlement Cadmium


I'm working with the Navy and need to incorporate the use of cadmium plated grade 8 fasteners (#10-24, and °- 28). What are the proper call-outs I should use to ensure that the fasteners have the smallest amount of embrittlement possible? Is QQ-P-416 [link by ed. to spec at Defense Logistics Agency,] good enough? Do I need to specify post plate processing?

Any suggestions where I can find fasteners processed in this manner.

Patrick Fischer-Carne
- DeLand, Florida


At United Airlines, low embrittlement cad is critical. We use a low embrittlement chemistry (unbright), check for contaminants that would influence the hydrogen entrapment weekly (Lawrence Gauge) and bake after plating. There are few cad platers left and fewer still that could comply with your embrittlement request.

Jeanne Kitazaki
United Airlines - San Francisco, California

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