Mutual Screw & Supply

M3 Medium Split Lock Washers | 18-8 Stainless Steel Black Oxide (5000 / Pkg.)

M3 Medium Split Lock Washers | 18-8 Stainless Steel Black Oxide (5000 / Pkg.) - Main image
$38.3 $53.2 In stock

These M3 split lock washers are manufactured from 18-8 Stainless Steel with a black oxide finish. They are well suited to preventing fastener loosening under vibration.

  • Material and finish: 18-8 Stainless Steel, Black Oxide finish
  • Thread size: M3
  • Applications: Preventing fastener loosening under vibration

Specifications

  • Product type: Split Lock Washers
  • Material: 18-8 Stainless Steel
  • Finish: Black Oxide
  • Grade: 18/8
  • Thread size: M3
  • Measurement type: Metric
  • Pack quantity: 5000 per package

Please note: This item is excess stock and is sold non-cancelable, non-refundable, and non-returnable. Please call us with any questions about this item before ordering.

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Standard Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

Express Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

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Delivery costs

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Standard Shipping · United States: $0.00

Express Shipping · United States: $3.99

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Returning an item

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United States · Return window (days after delivery): 30. Return method: By mail. Return postage: Seller pays.

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Customer Reviews (5.0 / 5 · 5 reviews)

Hannah X. ★★★★★

I work on electronics that get jostled around, and these M3 washers have kept everything tight through months of vibration. The black oxide finish on the 18-8 stainless steel adds a nice touch without any rust concerns.

Hannah ★★★★★

The black oxide finish looks even better in person than in the photos, and the 18-8 stainless gives me confidence they won't corrode in my shop. All 5000 arrived neatly packed and the sizing is spot-on for M3 bolts—these will hold up fine under the vibration on my drone builds.

Timothy ★★★★★

Bag held up fine through shipping, and these washers are exactly as described—the 18-8 stainless with black oxide finish looks clean and uniform across all five thousand. I’ve used a handful on a vibration-prone assembly and they’ve stayed put so far, which is really all you can ask for.