What size hole to drill for a #10 sheet metal screw?

Your pilot-hole drill-bit size will depend on the size of your sheet-metal screw. A size-4 screw should have a pilot-hole drill size of 3/32 inches; size 6, 7/64 inches; size 8, 1/8 inches; size 10, 9/64 inches; size 12, 5/32 inches; size 14-1/4 inches, 3/16 inches; and 5/16 inches, 1/4 inches.
A.

What size is a #10 screw?

US Machine Screw Diameters
SizeThread Diameter
DecimalNearest Fractional
#60.13"9/64"
#80.16"5/32"
#100.19"3/16"
  • How are screws sized?

    Screws have three basic measurements: gauge, threads per inch, and shaft length in inches. So, you may also see a measurement like 6-32 x 1 1/2". This means it's a #6 diameter, with 32 threads per inch (almost double the normal thread count as a standard wood screw) and an inch and a half long.
  • What does the M stand for in screw sizes?

    They were one of the first international standards agreed when the International Organization for Standardization was set up in 1947. The "M" designation for metric screws indicates the nominal outer diameter of the screw, in millimeters (e.g., an M6 screw has a nominal outer diameter of 6 millimeters).
  • How do you measure a screw?

    For fasteners where the head usually sits above the surface, the measurement is from directly under the head to the end of the fastener. For fasteners that are designed to be countersunk, the measurement is made from the point on the head where the surface of the material is, to the end of the fastener.
B.

What size drill bit to use for #10 wood screw?

Drill bit sizes for pre-drilling (most commonly used sizes in bold)
Screw SizePilot hole size for hardwoods*Pilot hole size for softwood**
#91/83/32
#101/87/64
#115/329/64
#129/641/8
  • Do I need to drill holes for wood screws?

    First, drill a pilot hole through both boards. Pilot holes guarantee that your screw won't break off and your wood won't crack. For most hardwoods, the pilot hole should be at least as large as the screw's minor diameter. If the screw has deep threads, or the wood is very hard, the pilot hole should be another 1/64-in.
  • Can you use drywall screws for wood?

    Predrill holes for screws with countersink bits to avoid splitting the wood or snapping the screw. Wood screws are better than drywall screws for woodworking projects. Drywall screws are made of hardened, brittle steel, and the shaft will often snap during installation, especially if they're screwed into hardwoods.
  • What size drill bit to use for #10 wood screw?

    Drill bit sizes for pre-drilling (most commonly used sizes in bold)
    Screw SizePilot hole size for hardwoods*Pilot hole size for softwood**
    #91/83/32
    #101/87/64
    #115/329/64
    #129/641/8
C.

What size drill bit do I need for a number 10 screw?

Wood Screw Pilot Hole Sizes
Screw SizeHard Wood
Tapered BitStraight Bit
#93/16"9/64"
#1013/64"9/64"
#127/32"5/32"

Updated: 22nd September 2018

Rate This Answer

5 / 5 based on 3 votes.