Products for bench top machinists | LittleMachineShop.com

Cap Screw, M4x20, Socket Head

Cap Screw, M4x20, Socket Head - Main image
$0.31 $0.49 In stock

Socket head cap screw, M4x20, supplied by McMaster-Carr. This is Part #16 on the SC4 parts diagram (SC4-16).

  • M4x20 socket head cap screw
  • Brand: McMaster-Carr
  • Listed as Part #16 on the SC4 parts diagram (SC4-16)
  • Standard SKU code: 2076
  • Category: fasteners, cap screws
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Customer Reviews (4.6 / 5 · 5 reviews)

Ruby ★★★★★

The head is deep enough for a hex key to really bite, and the threads cut smoothly into aluminum without any binding. Fit perfectly where I needed it on my SC4 build.

William ★★★★★

It was the exact M4x20 socket head I needed for the SC4-16 slot, and the threads were clean with no burrs. The 20mm length seated perfectly flush in the countersink, so it's done its job without any fuss.

Evelyn ★★★★★

I was worried about thread quality, but these M4x20 socket heads threaded smoothly into my SC4 frame without any binding.