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Library › Hardware › Round and oval head wood screws, inch #2–#14 (ASME B18.6.1): head…

#4 oval-head wood screw envelope

#4 oval-head wood screw envelope: cone from the Ø2.845 mm nominal body to head Ø5.71 mm (A max 0.225 in) over 1.70 mm (H ref 0.067 in), then a spherical cap across A rising to total head height 2.64 mm (O max 0.104 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 ##4
headoval
nominal body dia (in, computed)0.112
head dia A max / min0.225 / 0.195
head height H max / min (round)—
oval: side height H ref; total height O max / minside H ref 0.067; total O 0.104 / 0.084
slot width J max / min0.039 / 0.031
slot depth T max / min0.059 / 0.049
Phillips recess dia M max / min0.136 / 0.123
recess depth G max / min0.094 / 0.077
recess width N min0.019
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From the full sheet

Round and oval head wood screws, inch #2–#14 (ASME B18.6.1): head diameter, head height, slot and Phillips recess + oval-head envelope models: every size, notes, mating features and sources. What is the head diameter and height of a #8 round head or oval head wood screw?

Other sizes