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Softwood Drill Bit Size
Softwood Drill Bit Size Decimal Equivalent
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Hardwood Drill Bit Size Decimal Equivalent
Approximate Threads per Inch
Steel Phillips Flat Head Wood Screws
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Our most popular screws for wood. The flat head sits flush, so you won't need to worry about snags. The Phillips drive handles enough torque to drive into most kinds of wood without slipping.
Drill a pilot hole slightly smaller than the screw to prevent splitting. Length is measured from the top of the head.
Zinc-Plated Steel—A common choice for areas with occasional exposure to moisture.
Head | ||||||||||||||
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Lg. | Dia. | Ht. | Softwood Drill Bit Size | Hardwood Drill Bit Size | Countersink Angle | Flat Head Profile | Approx. Threads per In. | Threading | Tapping Method | Pkg. Qty. | Pkg. | |||
Zinc-Plated Steel | ||||||||||||||
No. 18 | ||||||||||||||
| 2 1/2" | 0.597" | 0.191" | 9/64" | 3/16" | 82° | Standard | 8 | Partially Threaded | Thread Forming | 10 | 90031A410 | 000000 | ||
| 3" | 0.597" | 0.191" | 9/64" | 3/16" | 82° | Standard | 8 | Partially Threaded | Thread Forming | 10 | 90031A430 | 00000 | ||
| 4" | 0.597" | 0.191" | 9/64" | 3/16" | 82° | Standard | 8 | Partially Threaded | Thread Forming | 10 | 90031A450 | 00000 | ||
