four pin spanner socketfour pin spanner socket.

What is a bolt spanner?

Description. Spanners and Wrenches are tools designed to grip screwed together components (mainly nuts, bolts and pipe connectors) to tighten or loosen them.

What is a spanner called?





In North American English, wrench is the standard term. The most common shapes are called open-end wrench and box-end wrench. In American English, spanner refers to a specialized wrench with a series of pins or tabs around the circumference.

What is the function of a socket spanner?

A socket wrench (or socket spanner) is a type of spanner (or wrench in North American English), that uses a closed socket format, rather than a typical open wrench/spanner to turn a fastener, typically in the form of a nut or bolt.

What is a spanner hole?

“Spanner” refers to the unusual shape of the screw head used. Even among spanner screws, however, there are a few variations in shape: Two-hole: The most popular form of spanner screw is a two-hole screw head. Their shape has garnered nicknames such as “snake eyes” and “pig nose” screws.

What are the three types of spanner?

These tend to come in one of three types of spanner:

  • Open ended spanners are the most popular spanners for both DIY and Motoring jobs. …
  • Ring Spanners are the spanners which hold the nut with a ring.
  • Combination Spanners have a ring at one end and are open ended at the other end.




How many different types of spanners are there?

Size of the Spanner

Millimeter spanners are available in variation 7mm similarly inch spanners are available in 1/16 and double-ended and ring spanners are mostly in sets of 6, 8, 12, and 36. In a set of 6 spanners in inch spanners, the double-ended and ring spanners are available in the following sizes.

What does a spanner wrench look like?

There are many types of spanner wrenches, each with a distinctly shaped hook. In addition, some spanners are multi-tools with double-sided hooks. The most common type of spanner wrench is the C spanner. Its head is open in the shape of the letter C, and its jaws are meant to correspond to the similarly sized nut.

What’s a combination spanner?



Combination spanners are double-ended tools and serve the functions of two spanners at once. One end is an open-ended spanner and the other end is a ring spanner. Combination spanners work for only one size of fastener, as both the profile heads are of the same fastener size.

What is double-ended spanner?

Double Open End Spanner – Carbon Steel. A one-piece wrench with a U-shaped opening that grips two opposite faces of the bolt or nut. Double-ended, with a different-sized opening at each end. The ends are generally oriented at an angle of around 15 degrees to the longitudinal axis of the handle.

What does a box end wrench look like?

wrenches. Box-end wrenches have ends that enclose the nut and have 6, 8, 12, or 16 points inside the head. A wrench with 12 points is used on either a hexagonal or a square nut; the 8- and 16-point wrenches are used on square members.

What is a open-ended spanner used for?



Open-ended spanners can turn any fasteners with two parallel flat sides (e.g. fasteners with square, hexagonal or octagonal heads).

What are swan neck spanners used for?

They go by a variety of names – swan neck, offset, cranked, drop end – but whatever you call them, they are a halfway house between a conventional flat spanner and a socket. Unlike the latter, they can tackle recessed fasteners even when there is a long length of thread exposed.

What is a ring spanner with an open gap in the ring called?

Ratcheting Spanners

Our combination ratchet spanners feature both an open end and a ring end.

What is AF spanner size?



The term width across flats (AF) is used for the following forms: 2-socket = round material with two surfaces. 4-socket = profile square section. 6-socket, 8-square = regular polygons.

What are Whitworth spanners?

A whitworth spanner or socket is larger than one marked with the same size in BSF for example a 1/4 inch whit is the same physical size as a 5/16inch BSF. (approx 13.34mm),this occurs throught the sizes so a set of whitworth sockets or spanners will fit an equal number of BSF nuts and bolts.

How do I know my spanner size?

Most spanners do have their size stamped on them, but this is usually the distance across the flats of the nut and can be confusing, so we will help you to determine the size you need, and show why you should not just grab one that seems close enough. There are many thread types, Metric, UNF, BSW, BSP to name a few.