What Size Drill Bit Do You Need for a 1/4 Inch Bolt?

Learn the correct drill bit size for a 1/4 inch bolt to ensure a perfect fit and secure fastening.

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For a 1/4 inch bolt, you typically need a #7 drill bit, which is approximately 0.201 inches in diameter. This will ensure a proper fit and secure fastening. Always refer to a drill bit chart for accurate sizes.

FAQs & Answers

  1. What size drill bit should I use for a 3/8 inch bolt? For a 3/8 inch bolt, a #9 drill bit, which is approximately 0.197 inches in diameter, is commonly recommended.
  2. How do I choose the right drill bit for my project? To choose the right drill bit, consider the bolt size, material type, and if a pilot hole is necessary for secure fastening.
  3. What other drill bit sizes are common for bolts? Common drill bit sizes for bolts include #6 for 1/4 inch, #8 for 5/16 inch, and #10 for 3/8 inch bolts.