Products for bench top machinists | LittleMachineShop.com

Washer, M4 Flat

Washer, M4 Flat - Main image
$0.11 $0.15 In stock

This M4 flat washer is a small fastener component intended for use with M4-sized hardware. It is supplied as a single standard item under SKU 3874 and is branded by McMaster-Carr.

  • Type: M4 flat washer
  • Outside diameter: 9 mm
  • Thickness: 0.8 to 1.0 mm
  • Complies with ISO 7089 (DIN 125)
  • Brand: McMaster-Carr
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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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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)

Eva ★★★★★

Finally got around to organizing my spare hardware bin, and these M4 washers fit the bolts perfectly without any wobble. The inner hole diameter is exactly right for the fastener, making assembly feel precise and secure.

David ★★★★★

I was pleasantly surprised how snugly this sits against the M4 bolt head with no wobble. The stainless finish has held up well so far against my basic workshop tools.

Richard ★★★★★

The hole lines up perfectly with my M4 bolts, no wobble or filing needed. Surface is smooth on both sides, so it sits flush against the part without scratching anything.