Spanner Types Quiz: Learn About Materials and Uses

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Questions and Answers

What is a feature of some ratchet ring spanners?

They are only used for loosening fasteners

They have a switch to reverse the ratchet direction (correct)

They have a fixed jaw design

They are only used for tightening fasteners

What is a precaution to be taken when using open-ended ratchet spanners?

To use them with power tools only

To use them in areas with restricted access

To apply the final tightness to fasteners

Not to use them to apply the final tightness or 'crack' tight fasteners (correct)

What is the primary purpose of special spanners with a limited application?

To be used on any type of thread system

To be used on a specific component or in special tool kits (correct)

To be used on only metric fastening devices

To be used on a variety of fastening devices

What is the purpose of step-up and step-down adaptors?

To allow sockets to be used with different drives Signup and view all the answers

What material are some spanners made from to ensure spark resistance?

Copper alloys Signup and view all the answers

What shape is the socket aperture usually at one end?

Bi-hexagonal Signup and view all the answers

Where is the size of a spanner typically marked?

On the jaw face or on the shank Signup and view all the answers

What are the two main sizing systems used for spanners?

American/Unified and Imperial Signup and view all the answers

What is a common use of socket spanners?

To be used with power tools, such as nut runners Signup and view all the answers

What does the sizing on a BS spanner relate to?

The nominal diameter of the nut, bolt, or stud Signup and view all the answers

What is a potential hazard of using a ratchet ring spanner?

The spanner may trap the fastener Signup and view all the answers

What is indicated by a spanner marked 1/2 BS?

The spanner is used on a 1/2-inch Imperial fastening device Signup and view all the answers

What is a characteristic of the ring/open-ended spanner?

It has a bi-hexagonal end and open end. Signup and view all the answers

What is the purpose of the gap in each ring of a flare nut spanner?

To permit the spanner to be introduced to the hexagon where access is restricted. Signup and view all the answers

What is a common use of box spanners?

In conjunction with a tommy bar to access restricted areas. Signup and view all the answers

What is a characteristic of ratchet ring spanners?

They have a ratchet mechanism for rapid run-down or loosening. Signup and view all the answers

What is a common advantage of flare nut spanners?

They provide a better grip than an open-ended spanner. Signup and view all the answers

What is a requirement for using a box spanner?

The spanner must fit snugly on the nut or bolt head. Signup and view all the answers

What is the main purpose of a crowfoot socket?

To reach nuts in tight spaces Signup and view all the answers

What type of drives are composed of twisted steel wire strands?

Flexible drives Signup and view all the answers

What is the primary advantage of a knuckle or breaker bar?

It enables more force to be applied to crack tight fasteners Signup and view all the answers

What is the main difference between a flex socket and a crowfoot socket?

The type of nuts they can reach Signup and view all the answers

What is a common use for a speed brace?

Screwing down panels quickly Signup and view all the answers

What is a characteristic of some extension drives?

They have a modified drive square Signup and view all the answers

Why should adjustable spanners and wrenches not be used on aircraft components?

Because they may not fit snugly and can cause injury or damage Signup and view all the answers

What is the proper procedure for screwing a fastener into a threaded hole or anchor nut?

Turn the fastener while holding the nut steady Signup and view all the answers

Why should pipe unions always be tightened with two spanners?

To prevent rotation of the union Signup and view all the answers

What is a safety precaution to take when using a spanner?

Ensure your footing is sound and you are protected from falling Signup and view all the answers

What should be done when there are no torque loading instructions?

Do not use excessive loading or additional leverage Signup and view all the answers

Why should spanners and hands be free from oil or grease?

To reduce slipping hazards Signup and view all the answers

Study Notes

Types of Spanners

Ring/Open-Ended Spanner: combines bi-hexagonal end and open end, with same size hexagonal head nut or bolt
Flare Nut Spanner: designed with a gap in each ring, permits introduction to hexagon in restricted access, engagement every 15° of handle movement
Box Spanner: gives full enclosure of nut or bolt head, used with tommy bar, must fit snugly on nut
Ratchet Ring Spanner: bi-hexagonal drive socket with ratchet mechanism, rapid run-down/loose of nuts/bolts without removal

Spanner Materials and Sizing

Spanners made from case-hardened mild steel, hardened and tempered high-carbon steel, or alloy steel
Copper alloys used for spark-resistant tools
Two main sizing systems: British Standard Institution (BS) and British Association (BA) Imperial system, American/Unified (Imperial) and metric system
BS spanner sizing relates to nominal diameter of nut, bolt or stud

Ratchet Spanners and Open-Ended Ratchet Spanners

Ratchet Ring Spanner: different size drive at each end, may or may not be cranked
Open-Ended Ratchet Spanner: modified jaw design, grip when turned in one direction, slip in the other, for rapid run-down/loose in restricted areas

Socket Spanners and Drive Accessories

Socket spanners used with handles, extension pieces, and universal joints
Socket aperture bi-hexagonal at one end, square or hexagonal at the other
Common drive sizes: 1/4 in. and 3/8 in. square
Step-up and step-down adaptors available

Crowfoot Sockets and Handles

Crowfoot sockets reach nuts in inaccessible locations, available with open, box, and flare-nut ends
Handles and adapters: extension drives, tee bars, knuckle or breaker bars, ratchet handles, and speed braces

Safety Precautions and Best Practices

Use spanners of correct type and size, avoid shimming jaws of worn or oversized spanners
Hold bolt head firm with one spanner while moving nut with another
Turn fastener when screwing into threaded hole or anchor nut, otherwise turn nut
Pipe unions must be tightened with two spanners
Ensure footing is sound, hands and spanners are free from oil or grease

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Description

Learn about the different types of spanners, their materials, and sizes. This quiz covers the properties of spanners, including case-hardened mild steel, high-carbon steel, and copper alloys. Discover the various markings on spanners and their units of measurement.

Spanner Types and Materials