Mutual Screw & Supply

M3-0.5 X 16mm Hex Head Cap Screws | Class 8.8 Steel Zinc Plated | Fully Threaded (300 / Pkg.)

M3-0.5 X 16mm Hex Head Cap Screws | Class 8.8 Steel Zinc Plated | Fully - Main image
$27.34 $39.62 In stock

M3-0.5 x 16mm hex head cap screws for machinery, equipment assembly and general industrial fastening.

  • Class 8.8 Steel Zinc Plated construction
  • Fully Threaded
  • Hex head for wrench or socket drive
  • Sold in packs of 300

Specifications

  • Thread Size: M3-0.5
  • Length: 16mm
  • Thread Pitch: 0.5mm
  • Material: Steel
  • Grade: Class 8.8
  • Finish: Zinc Plated CR+3
  • Thread Style: Fully Threaded
  • Pack Quantity: 300
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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 (5.0 / 5 · 5 reviews)

Eva J. ★★★★★

Pulled out a few to check the hex head fit — perfect engagement with my 3mm socket, no wobble. The zinc plating looks even and should hold up well inside a metal enclosure I’m building.

Henry M. ★★★★★

I needed M3 x 16mm screws for a small robotics frame, and the zinc plating on these makes them look clean and resist rust. The fully threaded length was perfect for securing the brackets tightly.

Zoe ★★★★★

The hex heads grabbed my 5mm socket perfectly with zero stripping, and the Class 8.8 steel feels solid even under a wrench. Packed in a tidy 300-count box, these fully threaded M3s are exactly what I needed for a frame rebuild.