Xem Studiomeasured geometryLibrary › Hardware › Round and oval head wood screws, inch #2–#14 (ASME B18.6.1): head…
#9 oval-head wood screw envelope
#9 oval-head wood screw envelope: cone from the Ø4.496 mm nominal body to head Ø9.09 mm (A max 0.358 in) over 2.74 mm (H ref 0.108 in), then a spherical cap across A rising to total head height 4.17 mm (O max 0.164 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 # | #9 |
|---|---|
| head | oval |
| nominal body dia (in, computed) | 0.177 |
| head dia A max / min | 0.358 / 0.316 |
| head height H max / min (round) | — |
| oval: side height H ref; total height O max / min | side H ref 0.108; total O 0.164 / 0.137 |
| slot width J max / min | 0.054 / 0.045 |
| slot depth T max / min | 0.095 / 0.078 |
| Phillips recess dia M max / min | 0.216 / 0.203 |
| recess depth G max / min | 0.144 / 0.119 |
| recess width N min | 0.034 |
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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?