The original screw drive with one slots in the head.

A combination of slotted and Philips drive.

Can be installed with the use of a normal slotted drive but needs special tools for removing.

The most popular X-shaped head drive in use today.

Similar to Philips.

Very common in Europe, looks a lot like a Philips but with 4 more contracts.

Very common in Europe, looks a lot like a Philips but with 4 more contracts.

Also known as Robertson drive and is very resistant to cam-out (the tip of the tool does not slip out and mar the screwhead very easily).

A six pointed star pattern specifically designed to prevent cam-out and stripped heads.

Slotted screw drive combined with a crosshead drive use with either original screw drive or Philips drive.

What type of Screw Drive is Number 1?

What type of Screw Drive is Number 2?

What type of Screw Drive is Number 2?

What type of Screw Drive is this?

What type of Screw Drive is this?

What type of Screw Drive is this?

Can be concealer below the wood surface.

Countersunk screws with a slight domed head protruding from the wood surface.

Head rest on the wood surface; a screw or bolt head having a spherical shape with a flat bearing surface; also called button head screw.

A countersunk head with a flat top.

A countersunk head with a rounded top.

A slightly rounded head with short vertical sides.

A domed head, the most universally used design in the past.

An extra wide, low, large diameter head with a rounded top. Also known as oven head, stove head, and oval binding head.

A standard type of wrench-applied hexagonal head characterized by clean, sharp corners trimmed to closed tolerances, recommended for general commercial applications.

A hexagonal head with built-in washer.

A hexagonal head with built-in washer and a slot.

A small cylindrical head using a socket drive.

A low profile rounded head using socket drive.

A cylindrical screw head having a slightly domed upper surface and a flat bearing surface.

A screw head having a flat upper surface and an underside shaped like the bell of a jungle.

A screw head designed to resist removal with a flat-tipped or Phillips screwdriver.

A truss head on a squre shank which resist rotation when located or driven into place.

Generally used in electrical and radio work with identifying undercut beneath the head which binds and eliminates fraying or stranded wire.

The Helical or Spiral ridge of a screw, nut or bolt.

More Commonly available and have fewer threads per inch. They are tolerant to slight damage or corrosion. It is usually specified as UNC or Unified Coarse.

Slightly stronger because the smaller fine threads take up less of the available area. They provide finer adjustments since they advance less per rotation than coarse threads. It is specified as UNF or Unified Fine.

A heavy, coarse-threaded screw having a square or hexagonal head driven by a wrench, used in areas inaccessible to the placement of a nut or where an exceptionally long bolt would be needed to penetrate a joint fully; also called coach screw, lag bolt.

A screw-threaded screw designed to tap its corresponding female thread as it is driven; also called tapping screw.

A screw having a slotted head and a threaded point that permits it to form its own mating threads when driven into with a screwdriver.

A metal fastener used with a nut or driven into a tapped whole, having a straight, threaded shank and a slotted or Philips head for turning with a screwdriver.

A metal fastener for machine parts, having a straight, threaded shank held by threads tapped in the hole into which it is screwed.

A coarse-threaded screw for fastening sheet metal and other thin material.

A screw, often without a head, threaded through a hole in one part tightly upon or into another part to prevent relative movement.

A screw having a flattened, knurled head designed to be turned by the thumb and forefinger.

A screw having a ring-shaped head.

Use to secure drywall to wood (the coarse thread version) or metal studs (the fine thread version.) The head to shaft junction is more curved to prevent tearing of the drywall. They also come with self-drilling tips.

An anchor having a metal shell with a screw along its central axis (similar to an expansion bolt), where a shell is placed in a hole and a screw is driven into it thereby expaning it and securing tightly the anchor into the hole. It is locally called as tux screw usually provided with a plastic shell.

A kind of screw that is used to fasten metal roofing sheets to the roof purlins.