ClipArt ETC

This science ClipArt gallery offers 84 illustrations of a simple machine, screws. Screws are made of a coninuous inclined plane (threads) on a surface, and is used to convert force from rotational to linear, or linear to rotational. The ratio of threads determines the mechanical advantage.

In the screw press, the screw is turned by means of a lever, which gives a great increase of mechanical advantage.

Screw Press

In the screw press, the screw is turned by means of a lever, which gives a great increase of mechanical…

"The power is generally applied by a wheel or a lever, and moves through the circumfrence of a circle. The distance between the two consecutive turns of any on continuous thread, measured in the direction of the axis of the screw, is called the pitch of the screw." -Avery 1895

Screw with Lever Arm

"The power is generally applied by a wheel or a lever, and moves through the circumfrence of a circle.…

Allen headless set screw is a hex socket screw used to fasten two objects.

Allen Headless Set Screw

Allen headless set screw is a hex socket screw used to fasten two objects.

A collar screw is used as mechanical stops, locating components, and bearing faces. The screw is commonly found in machines, usually in power transmission, motors, and gearboxes.

Collar Screw

A collar screw is used as mechanical stops, locating components, and bearing faces. The screw is commonly…

An illustration of the V thread screw. The screw is drawn by connecting the two opposite points of the thread to create the required pitch.

Conventional V Thread Screw

An illustration of the V thread screw. The screw is drawn by connecting the two opposite points of the…

"That the screw is a modified inclined plane, may be shown by winding a triangular piece of paper around a cylinder." — Avery, 1895

Diagram of a screw

"That the screw is a modified inclined plane, may be shown by winding a triangular piece of paper around…

A diagram illlustrating the principal of the screw.

Diagram of a Screw

A diagram illlustrating the principal of the screw.

A double thread screw drawn by drawing diagonal lines in between the pitch. The double thread screw is a screw with threads bunched together between the pitch.

Double Thread Screw

A double thread screw drawn by drawing diagonal lines in between the pitch. The double thread screw…

Drive screw is a threaded fastener used in industrial application. The screw is designed to last long by having a strong and durable head.

Drive Screw

Drive screw is a threaded fastener used in industrial application. The screw is designed to last long…

"Endless screw, a mechanical arrangement consisting of a screw the thread of which gears into a wheel with skew teeth, the obliquity corresponding to the angle of pitch of the screw." -Whitney, 1911

Endless Screw and Wheel

"Endless screw, a mechanical arrangement consisting of a screw the thread of which gears into a wheel…

The lag screw is used in fastening heavy timbers with a square or hexagonal head.

Lag Screw

The lag screw is used in fastening heavy timbers with a square or hexagonal head.

A wood screw with a flat head and slotted drive. Wood screws are unthreaded below the head and designed for attaching two pieces of wood.

Wood Screw

A wood screw with a flat head and slotted drive. Wood screws are unthreaded below the head and designed…

A wood screw with a flat head and slotted drive. Wood screws are unthreaded below the head and designed for attaching two pieces of wood.

Wood Screw

A wood screw with a flat head and slotted drive. Wood screws are unthreaded below the head and designed…

A wood screw with a flat head and slotted drive. Wood screws are unthreaded below the head and designed for attaching two pieces of wood.

Wood Screw

A wood screw with a flat head and slotted drive. Wood screws are unthreaded below the head and designed…

"An apparatus for lifting heavy bodies a short distance." — Williams, 1889

Screw-jack

"An apparatus for lifting heavy bodies a short distance." — Williams, 1889

The Hunter's screw is formed of two screws, a larger and a smaller. The former being screwed internally to allow the latter to screw into it.

Hunter's Screw-press

The Hunter's screw is formed of two screws, a larger and a smaller. The former being screwed internally…

A shoulder screw, also known as stripper bolt, is a fastener where the thread ends at the larger diameter. The screw usually used in machinery.

Shoulder Screw

A shoulder screw, also known as stripper bolt, is a fastener where the thread ends at the larger diameter.…

Single threaded screw.

Single Threaded Screw

Single threaded screw.

"A double nut which has right-hand and left-hand threads for attaching the joint-ends of rods or tubes; a union. a, a1, rods or pipes to be joined, a having a right-hand screw and a1 a left-hand screw, to which screws the right and left sleeve-nut b is fitted." -Whitney, 1889

Sleeve Nut

"A double nut which has right-hand and left-hand threads for attaching the joint-ends of rods or tubes;…

A square threaded tap or screw with three equal lengthed thickness. The stepped tap is used to fasten two materials together with unthreaded top.

Stepped Threaded Tap

A square threaded tap or screw with three equal lengthed thickness. The stepped tap is used to fasten…

Triple threaded screw.

Triple Threaded Screw

Triple threaded screw.

Turnbuckle is a screw device to adjust the tension or length of ropes, cables, tie rods, and other tension system.

Turnbuckles

Turnbuckle is a screw device to adjust the tension or length of ropes, cables, tie rods, and other tension…

The wood screw used to fasten two pieces of wood together. Wood screws usually have unthreaded shank below the head.

Wood Screw

The wood screw used to fasten two pieces of wood together. Wood screws usually have unthreaded shank…

Flat head screw countersunk (set flush) into wood.

Wood Screw Countersunk

Flat head screw countersunk (set flush) into wood.