Spanners

Spanners are one of the most common hand tools found in any tool bag, box or kit and are used for fastening and loosening nuts or bolt heads with a hexagonal shape. They are typically made from hardened chrome vanadium steel or beryllium copper, and the most common types can comprise of a ring-style spanner on one end and an open jaw spanner on the other (a combination spanner), or two open jaw ends (an open-ended spanner).

The ring end recess, if present, is generally a six-point or twelve-point opening and sometimes offers a ratchet mechanism that helps apply maximum force with minimal user effort. This will most likely match the size of the open jaw end, but always check each tool. The open jaw is typically offset by 15 degrees to allow for a greater freedom of movement during operation, which also allows a higher torque force to be applied to help turn the chosen fastening.

Spanners are available in a variety of metric (mm) and imperial (in) sizes to allow for greater functionality across a wider range of applications. Our range includes products from leading brands such as Bahco, Facom, Ega-Master, Stanley, Wera & RS PRO.

How do spanners work?

In the case of open jaw spanners, these tools work by holding the opposite sides of a nut or bolt to channel the physical movement of the user, applying torque force to the fastening so that it can be turned. The same rules apply to ring-style spanners, the only difference being that the ring fully encases the fastening rather than applying force to opposite sides. Depending on the material they are made from, spanners can often withstand large amounts of torque being applied to stubborn fasteners.

Type of spanners

  • C Spanners - Also known as hook spanners, these are high-quality tools designed to loosen retaining rings and adjusting chains. View our range of C Spanners here.
  • Combination Spanners - A combination spanner will have the open jaw spanner on one end and the ring-style spanner on the other. View our range of Hook Spanners here.
  • Hook Spanners - These tools have one or several pins or 'hooks' that are designed to drive spanner-head screws, threaded collars and retainer rings, shafts, and so on.
  • Open Ended Spanners - As the name suggests, these tools have an open jaw at each end, however they often differ in size.
  • Ratchet Spanners - Ratchet spanners allow the angle of the tool to be adjusted by the user without removing it from the fastening. Also known as socket wrenches: view our range in our socket wrenches section.
  • Ring Spanners - Ring-style spanners have enclosed openings to grip the complete fastening rather than just opposite sides. Double ended ring spanners often have offset handles to improve access to nuts and bolts.

Who uses spanners?

Spanners are used across many industries, including:

  • Mechanics
  • Electricians
  • Network Engineers
  • DIY Enthusiasts

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Viewing 1 - 20 of 35 products
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Description Price Spanner Type Imperial Size Imperial or Metric Metric Size Overall Length VDE/1000V Approved Double Ended Material Height Safe Offset Finish Non Sparking Size
RS Stock No. 778-2024
Mfr. Part No.40481212
BrandSTAHLWILLE
$25.24
Each
units
Combination Spanner 3/16in Imperial - 95 mm - Yes Chrome Alloy Steel - - Chrome - 3/16 in
RS Stock No. 737-0126
Mfr. Part No.41561620
BrandSTAHLWILLE
$54.68
Each
units
Ratchet Spanner 1/4 in, 5/16in Imperial - 109 mm - Yes Steel - - Chrome - 1/4 x 5/16 in
RS Stock No. 737-0090
Mfr. Part No.41041617
BrandSTAHLWILLE
$31.40
Each
units
Ring Spanner - Metric 16 mm, 17mm 255 mm - Yes Alloy Steel - Yes Chrome - 16 x 17 mm
RS Stock No. 778-2291
Mfr. Part No.58250065
BrandSTAHLWILLE
$316.07
Each
units
- - - - - - - - - - - - 3/4 in
RS Stock No. 737-0047
Mfr. Part No.40081010
BrandSTAHLWILLE
$27.23
Each
units
Combination Spanner - Metric 10mm 125 mm - Yes Alloy Steel - - Chrome - 10 mm
RS Stock No. 778-2033
Mfr. Part No.40481616
BrandSTAHLWILLE
$18.35
Each
units
Combination Spanner 1/4in Imperial - 105 mm - Yes Chrome Alloy Steel - - Chrome - 1/4 in
RS Stock No. 737-0031
Mfr. Part No.40033641
BrandSTAHLWILLE
$118.61
Each
units
Open Ended Spanner - Metric 36 mm, 41mm 375 mm - Yes Alloy Steel - - Chrome - 36 x 41 mm
RS Stock No. 737-0123
Mfr. Part No.41564044
BrandSTAHLWILLE
$68.10
Each
units
Ratchet Spanner 3/4 in, 7/8in Imperial - 235 mm - Yes Steel - - Chrome - 3/4 x 7/8 in
RS Stock No. 778-1977
Mfr. Part No.40031415
BrandSTAHLWILLE
$17.36
Each
units
Open Ended Spanner - Metric 14 mm, 15mm 190 mm - Yes Alloy Steel - - Chrome - 14 x 15 mm
RS Stock No. 778-2471
Mfr. Part No.40085500
BrandSTAHLWILLE
$24.08
Each
units
Combination Spanner - Metric 5.5mm 100 mm - Yes Chrome Alloy Steel - - Chrome - 5.5 mm
RS Stock No. 737-0056
Mfr. Part No.40081414
BrandSTAHLWILLE
$25.14
Each
units
Combination Spanner - Metric 14mm 165 mm - Yes Alloy Steel - - Chrome - 14 mm
RS Stock No. 778-2093
Mfr. Part No.40485454
BrandSTAHLWILLE
$92.83
Each
units
Combination Spanner 1-3/16in Imperial - 335 mm - Yes Chrome Alloy Steel - - Chrome - 1 3/16 in
RS Stock No. 778-2254
Mfr. Part No.96151117
BrandSTAHLWILLE
$410.15
Each
units
- - - - 165 mm - - Steel - - Chrome - 3/4 in
RS Stock No. 737-0117
Mfr. Part No.41563234
BrandSTAHLWILLE
$77.38
Each
units
Ratchet Spanner 1/2 in, 9/16in Imperial - 174 mm - Yes Steel - - Chrome - 1/2 x 9/16 in
RS Stock No. 737-0025
Mfr. Part No.40032022
BrandSTAHLWILLE
$29.86
Each
units
Open Ended Spanner - Metric 20 mm, 22mm 235 mm - Yes Alloy Steel - - Chrome - 20 x 22 mm
RS Stock No. 737-0012
Mfr. Part No.40031213
BrandSTAHLWILLE
$17.04
Each
units
Open Ended Spanner - Metric 12 mm, 13mm 170 mm - Yes Alloy Steel - - Chrome - 12 x 13 mm
RS Stock No. 778-2059
Mfr. Part No.40483434
BrandSTAHLWILLE
$34.50
Each
units
Combination Spanner 9/16in Imperial - 165 mm - Yes Chrome Alloy Steel - - Chrome - 9/16 in
RS Stock No. 778-2478
Mfr. Part No.40080707
BrandSTAHLWILLE
$18.32
Each
units
Combination Spanner - Metric 7mm 110 mm - Yes Chrome Alloy Steel - - Chrome - 7 mm
RS Stock No. 778-1983
Mfr. Part No.40082626
BrandSTAHLWILLE
$64.24
Each
units
Combination Spanner - Metric 26mm 300 mm - Yes Chrome Alloy Steel - - Chrome - 26 mm
RS Stock No. 737-0019
Mfr. Part No.40031011
BrandSTAHLWILLE
$14.11
Each
units
Open Ended Spanner - Metric 10 mm, 11mm 155 mm - Yes Alloy Steel - - Chrome - 10 x 11 mm