For a 5/16-inch flooring screw, a drill bit size of 3/16 inches is typically recommended for pilot holes. This size allows the screw to grip the wood effectively while reducing the risk of splitting. If you're drilling into harder materials, you might consider a slightly larger bit, such as 7/32 inches, to ensure easier insertion without compromising holding strength. Always check the specific manufacturer's recommendations for the best results.
You should use a bit that is just a little bit smaller, but only drill the depth about 2/3 of the distance. This will allow solid penetration into the undrilled wood. 5/16 lags = 3/16 or 1/4 pilot drill bit.
8mm
To convert 516 to percent multiply by 100:516 × 100 = 51,600 %
516/1
516-434 = 82
It is: 516 = DXVI
516
516 since 516 is a multiple of 4 (129x4=516)
5/516 = 0.00969
2 + 516 = 518
516 of 936 = 55.13%
516 + 505 = 521