sheet metal screw?

[Ryan Mallett]

I'm drilling in a wrought iron railing with 8-3/4 metal sheet screws.

What size drill bits should I use?

I drilled the holes with the 1/8 bit. The screws are too tight.

Any other recommendations

Thanks.

[Dennis Ford]

"Wrought iron" makes me think of material thicker than sheet metal. Good quality sheet metal screws are OK with 16 ga or thinner; if the metal is thicker than that, you may have to thread it. If it is sheet metal, you may have to experiment with hole size.