10pc M3 Bolts or steel screws - Various Sizes - 5/7/9/12/14/16/19mm


The standard among high-strength fasteners, these screws are stronger than Grade 8 steel screws. Length is measured from under the head.

Black Oxide—Screws have been heat-treated for hardness, which results in a dark surface color.

  • Thread Length: Full
  • Additional Specifications
    • Metric
    • Black-Oxide Class 12.9 Alloy Steel
    • M3 × 0.5
  • Minimum Rockwell hardness is C38.
  • RoHS Compliant
  • Set of 10 screws