Specifications
- Machine screws: Phillips pan, flat and truss head, #4-40 to 1/4-20
- Sheet metal screws: Phillips pan, flat and modified truss, and slotted hex washer head, #4 to 3/8 in.
- Self drilling screws: Phillips pan, flat, modified truss and wafer head, hex washer head, and flat head with wings, #6 to 1/4-20
- Wood and masonry: deck, timber, dowel, lag and concrete screws
- Finishes: zinc plated, 1,000 hour salt spray exterior coatings, epoxy coated, black phosphate
Common Uses
- Electrical boxes, panels and enclosures
- HVAC duct, roofing and metal building panels
- Decks, timber framing and trailer floors
- Anchoring to concrete, brick and block
FAQ
Machine screw or sheet metal screw?
A machine screw has a uniform machine thread and goes into a nut or a tapped hole. A sheet metal (self tapping) screw has a sharp point and coarse thread that forms its own thread in a pre-drilled hole in sheet metal, plastic or wood.
What is a self drilling (Tek) screw?
A self drilling screw has a drill bit point, so it drills, taps and fastens in one step with no pilot hole. The point number tells you how thick a metal it can drill: the higher the number, the thicker the metal.
How are screw lengths measured?
Flat head (countersunk) screws are measured overall, from the top of the head to the tip. Pan, truss, round and hex washer head screws are measured from under the head to the tip.
Related: Machine Screws | Sheet Metal Screws | Self Drilling Screws | Concrete Screws | Stainless Steel Screws | Screw Assortments
Free shipping on orders over $100, and orders placed before noon EST ship the same day. Purchase orders are accepted from government agencies, schools, hospitals, municipalities and companies with established credit with The Nutty Company, Inc.