3/8"-16 Thread-Cutting Screws

133 products

3/8-16 Thread-Cutting Screws in all available lengths, grades, materials, and finishes. This collection covers every 3/8-16 option in stock — use the filters to narrow by length, grade, material, and finish.

3/8-16 Thread Specifications

  • Nominal diameter: 0.375"
  • Threads per inch: 16
  • Tap drill (75% thread): 5/16" (0.3125")
  • Clearance hole (close fit): 25/64" (0.391")
  • Clearance hole (free fit): 13/32" (0.406")

Pair 3/8-16 thread-cutting screws with a matching 3/8-16 nut. Use 25/64" (0.391") for a close-fit clearance hole or 13/32" (0.406") for free fit.

Orders before 12 PM ET ship same day.

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