In the event that you encounter both exceptions listed above go up two drill bit sizes.
Drill size for number 6 sheet metal screew.
Decimal nearest fractional 4 112 7 64 6 138 9 64 8 164 11 64 10 190.
Drill size hole diameter nominal screw size number of threads per inch 6 18 7 16 8 15 10 12 12 11 14 10 20 9 24 9 32 30 29 21 3 16 5 5mm l 11 32 1160 1285 1360 1590 1875 2165 2900 3438 drill size hole diameter suggested hole sizes for types ab b 25 hole size hole size suggested hole sizes for types a.
The problem was i didn t know how big to drill the holes and when the holes were too small it was quite difficult to drive the screws.
With that being said you may need.
Fmw fasteners world headquarters.
Tap and drill sizes.
Clearance hole chart for inch bolts and screws according to asme b18 2 8.
After a hole has been tapped by a thread cutting screw it can be replaced by a machine screw of the same size diameter and number of threads per inch.
While installing shelving in my home i had to drill pilot holes for 8 and 12 metal screws into studs.
For instance a non tapered brass screw that s size 6 would use 3 32 drill bit for softwood 7 64 drill bit for hardwood.
Self drilling screws also called teks have a tip that resembles a drill and often have spaced threads like sheet metal screws.
Us sheet metal screw diameters.
Us sheet metal screw diameters.
Tap and drill size chart standard and metric included.
That allows for us to accommodate both the softer material and the non tapered screw tip.
Sheet metal screw to drill bit size table screw size drill bit size 2 3 32in 4 1 8in 6 5 32in 8 3 16in 10 13 64in 12 1 4in 1 4in 9 32in 5 16in 21 64in 3 8in.
Print this page.
Print this page.
Screw size hard wood soft.
Eye bolts and eye lags.
Screw to drill bit size chart a reference page for using the correct size pilot drill per screw.
Pilot hole sizes for metal screws and wood screws posted 30 january 2010 at 9 43pm by michael chu.
Sizes of 4 40 to 3 8 16 are common.
1438 north post oak houston texas 77055.
Decimal nearest fractional 4 112 7 64 6 138 9 64 8 164 11 64 10.
Self tapping screws sheet metal.