Unused box of Self Drilling Screw Hex Washer Head #12 x 3/4 Qty of 5,000. I've 4 boxes of these. The item "Self Drilling Screw Hex Washer Head #12 x 3/4 5,000 pcs" is in sale since Monday, February 12, 2018.This item is in the category "Business & Industrial\Fasteners & Hardware\Screws & Bolts". The seller is "mcclarsa" and is located in Saint Petersburg, Florida. This item can't be shipped, the buyer must pick up the item.