Machine shops with in-house black oxide in California

Black oxide is a thin conversion coating on steel that gives a black finish with mild corrosion resistance and no dimensional change — applied in the shop.

State the material and the spec (MIL-DTL-13924), the oil or wax seal you want, and whether the finish must be uniform on a visible part.

The shops — 2

Each shop's verified black oxide fact is quoted from its own website; open the shop for every other capability on record.

• Mars Engineering

  San Leandro, CABlack oxide (in-house)

  Our specialty lies in providing various types of plating, such as hard chrome, zinc, black oxide, nickel, gold and Teflon. source

• Retana Prototype Machining LLC

  Turlock, CABlack oxide (in-house)

  We offer professional finishes including powder coating, anodizing, black oxide, and hard coatings to meet aerospace, medical, and industrial requirements. source

Fewer than three verified shops here yet — this page grows as more shops in the area are verified.

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All machine shops in California · Plating in California · Passivation in California · Steel in California