Xem Studiomeasured geometryLibrary › Hardware › Round and oval head wood screws, inch #2–#14 (ASME B18.6.1): head…
#8 oval-head wood screw envelope
#8 oval-head wood screw envelope: cone from the Ø4.166 mm nominal body to head Ø8.43 mm (A max 0.332 in) over 2.54 mm (H ref 0.100 in), then a spherical cap across A rising to total head height 3.86 mm (O max 0.152 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 # | #8 |
|---|---|
| head | oval |
| nominal body dia (in, computed) | 0.164 |
| head dia A max / min | 0.332 / 0.292 |
| head height H max / min (round) | — |
| oval: side height H ref; total height O max / min | side H ref 0.100; total O 0.152 / 0.126 |
| slot width J max / min | 0.054 / 0.045 |
| slot depth T max / min | 0.088 / 0.072 |
| Phillips recess dia M max / min | 0.205 / 0.192 |
| recess depth G max / min | 0.131 / 0.106 |
| recess width N min | 0.033 |
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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?