Mutual Screw & Supply

#4 Split Light Lock Washers | 18-8 Stainless Steel Black Oxide (1000 / Pkg.)

#4 Split Light Lock Washers | 18-8 Stainless Steel Black Oxide (1000 / Pkg.) - Main image
$25.6 $36.05 In stock

These #4 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: #4
  • Applications: Preventing fastener loosening under vibration

Specifications

  • Product type: Lock Washers
  • Material: 18-8 Stainless Steel
  • Finish: Black Oxide
  • Grade: 18/8
  • Thread size: #4
  • Measurement type: Imperial
  • Pack quantity: 1000 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 (4.2 / 5 · 5 reviews)

Joseph ★★★★★

The black oxide finish gives these a nice matte look and seems to hold up well under my bench grinder setup. Washers are uniform, no sharp burrs, and the 18-8 stainless gives me confidence they won't rust out. A full thousand pack means I won't be reordering anytime soon.

Miles P. ★★★★★

The black oxide finish on these washers looks great and seems durable, holding up well during assembly. I used them on a small electronics project where vibration was a concern, and they keep everything snug.

Scarlett ★★★★☆

Trying these out on a small vibration-heavy assembly; the black oxide finish is holding up well so far without any chipping off. The 18-8 stainless steel feels like it’ll resist corrosion longer than the cheaper zinc ones I used before. Only wish they came in a smaller pack size since a thousand is