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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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 Priced to Clear
RS Stock No. 198-2101
Mfr. Part No.600517
BrandTeng Tools
£8.74
Each
Units
- - - - 210 mm - - Chrome Vanadium No - Satin No 17 mm -
RS Stock No. 187-5292
Mfr. Part No.82352
BrandGearWrench
£110.78
Each
Units
Ring Spanner 1-7/8in Imperial - 336 mm - No Alloy Steel - Yes Black Oxidized - 1-7/8 in -
RS Stock No. 191-4046
Mfr. Part No.34.JU13T
BrandFacom
£127.12
Each
Units
- - - - - - - - - - - - 1/2 in, 1/4 in, 11/16 in, 11/32 in, 13/32 in, 3/16 in, 3/8 in, 5/16 in, 5/8 in, 7/16 in, 7/32 in, 9/16 in, 9/32 in -
New
RS Stock No. 221-3079
Mfr. Part No.50-C-8
BrandSAM
£16.02
Each
Units
Combination Ratchet Spanner 5/16" Metric 8mm 139.9 mm - Yes - Yes - - Yes 8 mm -
RS Stock No. 188-3618
Mfr. Part No.467B.32
BrandFacom
£73.66
Each
Units
Combination Ratchet Spanner - Metric 32mm 422 mm - Yes - - - Satin Chrome - 32 mm -
New
RS Stock No. 221-3070
Mfr. Part No.50-C-21
BrandSAM
£32.21
Each
Units
Combination Ratchet Spanner 53/64" Metric 21mm 291.5 mm - Yes - Yes - - Yes 21 mm -
RS Stock No. 127-1193
Mfr. Part No.020070
BrandWera
£36.30
Each
Units
Combination Ratchet Spanner - Metric 15mm 199 mm - Yes - - - - - 15 mm -
New
RS Stock No. 218-1059
Mfr. Part No.E117391
£11.85
Each
Units
Combination Ratchet Spanner - Metric 11 x 13mm 174 mm No Yes - - - - - 11 x 13 mm -
RS Stock No. 187-5275
Mfr. Part No.85987
BrandGearWrench
£245.53
Each
Units
- - - - - - - Alloy Steel - - Polished - 20 mm, 21 mm, 22 mm, 24 mm, 25 mm -
New
RS Stock No. 221-2758
Mfr. Part No.Z-80-8
BrandSAM
£22.57
Each
Units
- - Metric 8mm 94 mm Yes No - - - - - 8 mm -
RS Stock No. 188-3773
Mfr. Part No.44.24X27
BrandFacom
£16.52
Each
Units
Open Ended Spanner - Metric 24 mm, 27mm 270 mm - Yes - - - Satin Chrome - 24 x 27 mm -
RS Stock No. 187-6823
Mfr. Part No.SS011-2427
BrandBahco
£63.02
Each
Units
Ring Spanner - Metric 24 mm, 27mm 340 mm - Yes Stainless Steel - Yes - - 24 x 27 mm -
RS Stock No. 188-3756
Mfr. Part No.440.9/16
BrandFacom
£7.08
Each
Units
Combination Spanner 9/16in Imperial - 180 mm - Yes - - - Satin Chrome - 9/16 in -
RS Stock No. 188-3848
Mfr. Part No.440.JP14
BrandFacom
£99.41
Each
Units
- - - - - - - - - - - - 7 mm, 8 mm, 10 mm, 11 mm, 12 mm, 13 mm, 14 mm, 15 mm, 16 mm, 17 mm, 18 mm, 19 mm -
RS Stock No. 187-5281
Mfr. Part No.81840
BrandGearWrench
£41.24
Each
Units
Combination Spanner - Metric 36mm 507 mm - Yes Alloy Steel - - Satin - 36 mm -
RS Stock No. 198-2094
Mfr. Part No.600511
BrandTeng Tools
£5.86
Each
Units
- - - - 150 mm - - Chrome Vanadium No - Satin No 11 mm -
RS Stock No. 187-6801
Mfr. Part No.SS003-22
BrandBahco
£23.10
Each
Units
Combination Spanner 11/16in Imperial - 195 mm - Yes Stainless Steel - - - - 11/16 in -
RS Stock No. 187-7001
Mfr. Part No.SS002-24
BrandBahco
£32.06
Each
Units
Combination Spanner - Metric 24mm 215 mm - Yes Stainless Steel - - Satin Chrome - 24 mm -
RS Stock No. 127-1189
Mfr. Part No.020066
BrandWera
£32.53
Each
Units
Combination Ratchet Spanner - Metric 11mm 165 mm - Yes - - - - - 11 mm -
RS Stock No. 188-3708
Mfr. Part No.39.3.2H
BrandFacom
£9.04
Each
Units
Combination Spanner - Metric 3.2mm 77 mm - Yes - - - Satin Chrome - 3.2 mm -