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Library › Hardware › Flat-head wood screws, inch #4–#14 (ASME B18.6.1): body and head…

#14 flat-head wood screw envelope

#14 flat-head wood screw envelope: head Ø12.88 mm (A max .507 in) tapering to the Ø6.147 mm nominal body over 3.89 mm (H ref .153 in); plain body, example overall length 1-1/2 in (38.1 mm, Xem's choice); no thread, slot, recess or point

Exact dimensions. True size, no tolerance added. Threads are plain cylinders at the major diameter.

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Dimensions

screw ##14
TPI10
nominal body dia (in).242
nominal body dia (mm, computed)6.15
body dia max / min (AFT, in).246 / .235
flat head dia A max / min (in).507 / .452
head height H ref (in).153
pilot softwood / hardwood (Albany, in)5/32 / 3/16
clearance (Albany, in)1/4
pilot softwood / hardwood (Fine Power Tools, in)5/32 / 11/64
clearance (Fine Power Tools, in)1/4
pilot hardwood / softwood (Engineers Edge, in)9/64 / 1/8
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From the full sheet

Flat-head wood screws, inch #4–#14 (ASME B18.6.1): body and head diameter, pilot and clearance holes from three sources + envelope models: every size, notes, mating features and sources. What drill size for a #8 wood screw pilot and clearance hole, and what are the body and head diameters?

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