Products for bench top machinists | LittleMachineShop.com

Cap Screw, M3x20, Socket Head

Cap Screw, M3x20, Socket Head - Main image
$0.24 $0.35 In stock

Cap Screw, M3x20, Socket Head is a socket head cap screw sized M3x20. It is listed under fasteners, cap screws, and is branded McMaster-Carr.

  • Socket head cap screw
  • Size: M3x20
  • Brand: McMaster-Carr
  • Category: fasteners, cap screws
  • SKU: Standard, code 4178
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Express Shipping · United States: $3.99

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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)

Elizabeth ★★★★★

The threads were clean and started easily into the aluminum bracket I was assembling, which saved me a lot of frustration. I've already ordered more for the next project.

Robert W. ★★★★★

The 3mm socket fit perfectly on my driver, and all 20mm of thread grabbed cleanly. No stripped heads or sharp burrs, exactly what I needed for a snug bracket mount.

Grace A. ★★★★★

The hex drive on these M3x20s bites perfectly with a 2.5mm Allen key, and the 20mm length fits exactly where I needed it. They threaded in smoothly without any cross-threading fuss.