Are black bolts painted black?

Black BoltMost likely no. Our “black” bolts are unfinished or bare steel. The term “black bolt” is an industry term for plain finish or no finish bolts. These bolts offer no corrosion resistance and will rust over time. If you are looking for a decorative coating that is actually black, you will want to specify that they are actually coated and state which kind of coating is necessary. You will want to contact your local plating company or powder coater for the many different options from black oxide, black zinc, powder coating or even just painting to get the look you are after. Portland Bolt typically does not offer these finishes since we do not perform these services within our facility.

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    In black coating bolt we found rust corrosion then what we need to do for corrosion its acceptable or rejected please give feedback its urgent

    @Mohammed- Rejection based on corrosion is subjective will be up to the project engineer. We are unable to make recommendations in this case.

    @Paul- Apologies but we don’t typically deal in small screws like that. Your local fastener distributor or hardware store should be able to help you with these.

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