Screw number to inch fractions
Type a value in screw to get it in in (fraction) instantly.
≈3/16in (fraction)
That's about the same as a door-hinge screw (#10).
Convert the other way: in (fraction) to screw
What it means
How thick is that screw?
Major (outside) thread diameter. The number gives the thickness only; length and thread pitch are separate (8-32 × 1/2" is a #8, 32 threads per inch, half an inch long).
The math
How to convert screw to in (fraction)
Diameter (in) = 0.060 + 0.013 × number; for #00 use −1, #000 −2. Millimeters = inches × 25.4.
Example: #10 screw = ≈3/16 in (fraction).
Every unit
That screw in every unit
Tables
screw to in (fraction) conversion table
| screw | in (fraction) |
|---|---|
| #0 screw | ≈1/16 in (fraction) |
| #1 screw | ≈5/64 in (fraction) |
| #2 screw | ≈3/32 in (fraction) |
| #3 screw | ≈3/32 in (fraction) |
| #4 screw | ≈7/64 in (fraction) |
| #5 screw | 1/8 in (fraction) |
| #6 screw | ≈9/64 in (fraction) |
| #8 screw | ≈5/32 in (fraction) |
| #10 screw | ≈3/16 in (fraction) |
| #12 screw | ≈7/32 in (fraction) |
| #14 screw | ≈15/64 in (fraction) |
| #16 screw | ≈17/64 in (fraction) |
| #18 screw | ≈19/64 in (fraction) |
| #20 screw | ≈5/16 in (fraction) |
| #24 screw | ≈3/8 in (fraction) |
in (fraction) to screw conversion table
| in (fraction) | screw |
|---|---|
| 1/16 in (fraction) | #0 screw |
| 5/64 in (fraction) | #1 screw |
| 3/32 in (fraction) | #3 screw |
| 7/64 in (fraction) | #4 screw |
| 1/8 in (fraction) | #5 screw |
| 9/64 in (fraction) | #6 screw |
| 5/32 in (fraction) | #7 screw |
| 3/16 in (fraction) | #10 screw |
| 7/32 in (fraction) | #12 screw |
| 15/64 in (fraction) | #13 screw |
| 17/64 in (fraction) | #16 screw |
| 19/64 in (fraction) | #18 screw |
| 5/16 in (fraction) | #19 screw |
Quick answers
Quick answers
- How many in (fraction) is #1 screw?
- #1 screw is ≈5/64 in (fraction).
- How many in (fraction) is #10 screw?
- #10 screw is ≈3/16 in (fraction).
The units
About these units
Screw number (screw)
US machine and wood screw numbers, #0000 to #24.
Inch fractions (in (fraction))
The nearest 64th of an inch.
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