Mutual Screw & Supply

M3-0.5 X 20mm Hex Head Cap Screws | 18/8 Stainless Steel | Fully Threaded (600 / Pkg.)

M3-0.5 X 20mm Hex Head Cap Screws | 18/8 Stainless Steel | Fully Threaded (600 - Main image
$21.74 $31.5 In stock

M3-0.5 x 20mm hex head cap screws for machinery, equipment assembly and general industrial fastening.

  • 18/8 Stainless Steel construction
  • Fully Threaded
  • Hex head for wrench or socket drive
  • Sold in packs of 600

Specifications

  • Thread Size: M3-0.5
  • Length: 20mm
  • Thread Pitch: 0.5mm
  • Material: 18/8 Stainless Steel
  • Grade: 18/8
  • Finish: Plain
  • Thread Style: Fully Threaded
  • Pack Quantity: 600
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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 (4.6 / 5 · 5 reviews)

David ★★★★★

These feel solid in the hand, and the hex head makes them much easier to drive than Phillips-head screws. I'm using them for a jig on my drill press and the 18/8 stainless gives me confidence they won't rust. The 600-count pack should last me through several projects.

Adam X. ★★★★★

I needed a bulk supply of M3 screws for some custom 3D-printed enclosures, and these hex head ones from this pack drive in smoothly without stripping. The 18/8 stainless steel gives me confidence they won't rust in my workshop environment.

Victoria ★★★★★

Installed these in a few jig fixtures and the fully threaded design made it easy to get a solid bite at any depth. The 18/8 stainless steel finish is bright and clean, no burrs on the threads out of the bag.