Question

what is the best type of screw that can fit in a 0.780 inch screw hole? please state the screw size. thank you.

Answer 1

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Answer 2

Calculation (Humanized Explanation):

1. Understand the Hole Size:

• The hole diameter is 0.780 inches. This is likely a clearance hole (for bolts/screws to pass through).

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2. Screw Selection Rule:

• #14 screw: Major diameter = 0.242" (fits comfortably).

• 1/4" bolt: Major diameter = 0.250" (also fits well).

• The screw’s major diameter should be smaller than the hole (allowing wiggle room).

• Common screws close to (but smaller than) 0.780" are:

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3. Length Consideration:

• Choose a length (e.g., 3/4") based on material thickness.

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4. Why Not Larger?

• A 5/16" screw (0.3125") would be too tight; 0.780" is likely for a bolt’s clearance hole, not threads.

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Final Pick:

• #14 screw or 1/4" bolt (both fit safely with room for alignment).

Answer:
For a 0.780-inch screw hole, the best screw size is #14 (0.242" major diameter) with a 3/4" length or a 1/4" bolt (0.250" major diameter).