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Black Oxide Fasteners

1589 products
Black Oxide Fasteners

Black oxide is a conversion coating about 1–2 µm thick, usually oiled. It adds mild corrosion resistance and keeps dimensions exact, which matters on 10.9 and 12.9 parts — there is no hydrogen embrittlement risk.

In stock now: 1,589 lines; covering Screws (700), Washers & Retaining Rings (381), Set Screws (331), Socket Head Screws (327), DIN916 (309); priced from $0.0015 per piece. Every line is sold by the piece — one piece is a valid order.

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Frequently asked

What is Black Oxide?
Black oxide is a conversion coating about 1–2 µm thick, usually oiled. It adds mild corrosion resistance and keeps dimensions exact, which matters on 10.9 and 12.9 parts — there is no hydrogen embrittlement risk.
How much do Black Oxide fasteners cost?
Prices in our catalogue for Black Oxide run from $0.0015 to $17.6615 per piece, depending on diameter, length and material. There is no minimum order.
Is there a minimum order quantity for Black Oxide?
No. Every line is sold by the piece, so you can order a single piece to check the fit and the finish before committing to a production quantity. Your order total is confirmed in the cart, before payment.
What do you stock in Black Oxide?
Black Oxide Fasteners currently covers 1,589 lines across Screws, Washers & Retaining Rings, Set Screws, Socket Head Screws, DIN916, Self-Tapping & Drilling Screws. The full list of sizes, materials and finishes on this page is live — use the filters at the top to narrow it down.
How quickly do you ship Black Oxide fasteners, and can you send them to the EU or Russia?
In-stock lines leave our Foshan warehouse within 24–48 hours. We ship worldwide, including the EU and Russia. For the EU we are appointing a responsible person under Regulation (EU) 2023/988 (GPSR); for EAEU orders the conformity documents are handled with the importing party, who is the applicant of record. We can supply an EN 10204 3.1 mill test certificate, a full technical specification and a packing list with weights on request.
Product Diameter × Length Material Stock Unit price
DIN 9250 Double Sided Lock Washer M27x39 65Mn Spring Steel DIN 9250 Double Sided Lock Washer M27x39 65Mn Spring Steel
Black Oxide
M27 × 39 65Mn Spring Steel In stock Log in to see prices Log in to order
DIN 9250 Double Sided Lock Washer M24x36 65Mn Spring Steel DIN 9250 Double Sided Lock Washer M24x36 65Mn Spring Steel
Black Oxide
M24 × 36 65Mn Spring Steel In stock Log in to see prices Log in to order
DIN 9250 Double Sided Lock Washer M22x33 65Mn Spring Steel DIN 9250 Double Sided Lock Washer M22x33 65Mn Spring Steel
Black Oxide
M22 × 33 65Mn Spring Steel In stock Log in to see prices Log in to order
DIN 9250 Double Sided Lock Washer M20x30 65Mn Spring Steel DIN 9250 Double Sided Lock Washer M20x30 65Mn Spring Steel
Black Oxide
M20 × 30 65Mn Spring Steel In stock Log in to see prices Log in to order
DIN 9250 Double Sided Lock Washer M18x27 65Mn Spring Steel DIN 9250 Double Sided Lock Washer M18x27 65Mn Spring Steel
Black Oxide
M18 × 27 65Mn Spring Steel In stock Log in to see prices Log in to order
DIN 9250 Double Sided Lock Washer M16x24 65Mn Spring Steel DIN 9250 Double Sided Lock Washer M16x24 65Mn Spring Steel
Black Oxide
M16 × 24 65Mn Spring Steel In stock Log in to see prices Log in to order
DIN 9250 Double Sided Lock Washer M14x22 65Mn Spring Steel DIN 9250 Double Sided Lock Washer M14x22 65Mn Spring Steel
Black Oxide
M14 × 22 65Mn Spring Steel In stock Log in to see prices Log in to order
DIN 9250 Double Sided Lock Washer M12x18 65Mn Spring Steel DIN 9250 Double Sided Lock Washer M12x18 65Mn Spring Steel
Black Oxide
M12 × 18 65Mn Spring Steel In stock Log in to see prices Log in to order
DIN 9250 Double Sided Lock Washer M10x16 65Mn Spring Steel DIN 9250 Double Sided Lock Washer M10x16 65Mn Spring Steel
Black Oxide
M10 × 16 65Mn Spring Steel In stock Log in to see prices Log in to order
DIN 9250 Double Sided Lock Washer M8x13 65Mn Spring Steel DIN 9250 Double Sided Lock Washer M8x13 65Mn Spring Steel
Black Oxide
M8 × 13 65Mn Spring Steel In stock Log in to see prices Log in to order
DIN 9250 Double Sided Lock Washer M6x10 65Mn Spring Steel DIN 9250 Double Sided Lock Washer M6x10 65Mn Spring Steel
Black Oxide
M6 × 10 65Mn Spring Steel In stock Log in to see prices Log in to order
DIN 9250 Double Sided Lock Washer M5x9 65Mn Spring Steel DIN 9250 Double Sided Lock Washer M5x9 65Mn Spring Steel
Black Oxide
M5 × 9 65Mn Spring Steel In stock Log in to see prices Log in to order
DIN 9250 Double Sided Lock Washer M4x7 65Mn Spring Steel DIN 9250 Double Sided Lock Washer M4x7 65Mn Spring Steel
Black Oxide
M4 × 7 65Mn Spring Steel In stock Log in to see prices Log in to order
DIN 9250 Double Sided Lock Washer M3x5.5 65Mn Spring Steel DIN 9250 Double Sided Lock Washer M3x5.5 65Mn Spring Steel
Black Oxide
M3 × 5.5 65Mn Spring Steel In stock Log in to see prices Log in to order
GB 858 Tab Washer for Round Nut M14 A3 Carbon Steel GB 858 Tab Washer for Round Nut M14 A3 Carbon Steel
Black Oxide
M14 A3 Carbon Steel In stock Log in to see prices Log in to order
GB 858 Tab Washer for Round Nut M12 A3 Carbon Steel GB 858 Tab Washer for Round Nut M12 A3 Carbon Steel
Black Oxide
M12 A3 Carbon Steel In stock Log in to see prices Log in to order
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