Mutual Screw & Supply

4711 | Keystone Shoulder Washer | 1/4" ID | Black Fibre (50 / Pkg.)

4711 | Keystone Shoulder Washer | 1/4" ID | Black Fibre (50 / Pkg.) - Main image
$7.5 $10 In stock

A 1/4" insulating fibre shoulder washer roughly 0.093" thick used to electrically isolate and align fasteners passing through a panel or printed circuit board.

Specifications

  • Product type: Shoulder Washer
  • Brand: Keystone
  • Material: Black Fibre
  • Key dimension: 1/4" ID
  • Pack quantity: 10 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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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 (4.6 / 5 · 5 reviews)

Ellie ★★★★★

The shoulder on these fibre washers is just the right thickness to keep my standoffs from shorting against the chassis. Installed a batch of 50 on a new control board and every one seated cleanly without splitting. Exactly what I needed for clean electrical isolation on those through-hole mounts.

Miles ★★★★★

Perfect fit for isolating those board standoffs I was replacing, and the black fibre material feels sturdy enough for repeated assembly. The 1/4" inner diameter held snug on the screw threads without any wobble.

Abigail W. ★★★★★

Exactly what I needed for isolating a couple of power transistor mounting holes on a PCB. The 1/4" ID fit perfectly over the screw shaft, and the 0.093" thickness provides just enough standoff. Good to have a 50-pack on hand for future builds.