Ratchet Spanners

A ratchet spanner or wrench uses a mechanism which allows an open-ended, flare or ring head to turn a fastener in one direction but not the other while remaining fitted to the fastener head. By turning the spanner over or flicking a lever, it changes the direction of movement.


This piece of equipment is essential to any toolbox as it can tighten and loosen a nut or bolt, and by applying the correct amount of torque to the fastening, it can save time and effort. Some manufacturers choose to etch the arrows of the torque direction near the lever, making it easier for the user to identify the direction to tighten or loosen in.


Combination spanners only have one ratchet head, with a non-ratcheted head on the other end. They combine a 2 in 1 use where the non-ratcheted end can start or finish the fastening and the ratcheted end can do the hard work, giving the benefit of minimal effort for the end user.


Common ratchet spanner head types:


  • Ring Head: The most frequently used type of ratchet head. They are especially useful as they apply force to all sides of the fastener, offering additional grip to avoid coming off the nut or bolt whilst the tool is in use.

  • Reversible: The simple reversing mechanism allows to user to adjust the direction of the ratchet simply by moving the lever across on the tool.

  • Flare Nut Spanner: Also known as a 'crow's foot' spanner or a 'brake nut' spanner, it provides contact at six points on the fastener, allowing a secure grip.

  • Open Ended Spanner: An essential spanner for any tool box, it can also come with a ratchet mechanism meaning this versatile tool can be used across various settings.

  • Open Ended Ratchet: This ratchet has an altered profile which can catch the fastening in one direction to apply the torque to loosen or tighten it. It can only move in one direction and can be turned over to change the direction of the torque application.

  • What are ratchet spanners made of?


    Most spanners are made with Chrome Vanadium steel which is structurally strong. It's toughness enables it to withstand high fatigue and wear, with the added benefit of being resistant to corrosion and oxidisation, improving the life of the tool.


    What size do ratchet spanners come in?


    Ratchet spanners are available in a variety of metric and imperial sizes which makes them a flexible tool for any setting that they are required to be used in.


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    Description Price Size Special Features Model Shape Handle Type Overall Length VDE/1000V Approved Finish Height Safe Material
    RS Stock No. 911-1496
    BrandRS PRO
    £43.06
    Each
    Units
    17 x 19 mm - - - Insulated 250 mm Yes - - Chrome Vanadium Steel
    RS Stock No. 911-1487
    BrandRS PRO
    £42.38
    Each
    Units
    13 x 17 mm - - - Insulated 240 mm Yes - - Chrome Vanadium Steel
    RS Stock No. 181-828
    BrandRS PRO
    £12.69
    Each
    Units
    15 x 17 mm Double Ended Ring - Hexagon - - - Black - Chrome Vanadium Steel
    RS Stock No. 181-806
    BrandRS PRO
    £7.60
    Each
    Units
    11 x 12 mm Double Ended Ring - Hexagon - - - Black - Chrome Vanadium Steel
    RS Stock No. 911-1499
    BrandRS PRO
    £25.04
    Each
    Units
    21 x 26 mm - - - Insulated 295 mm Yes - - Chrome Vanadium Steel
    RS Stock No. 911-1493
    BrandRS PRO
    £57.15
    Each
    Units
    24 x 30 mm - - - Insulated 295 mm Yes - - Chrome Vanadium Steel
    RS Stock No. 144-7961
    BrandRS PRO
    £8.36
    Each
    Units
    13 mm - 72 Tooth Gear Mechanism Open End, Ring Universal Ratchet - - - - CRV
    RS Stock No. 144-7566
    BrandRS PRO
    £61.77
    Each
    Units
    10 mm, 11 mm, 13 mm, 15 mm, 17 mm, 19 mm - Reversible Gear Wrench Ring - - - Chrome - Chrome Vanadium Steel
    RS Stock No. 144-7960
    BrandRS PRO
    £8.11
    Each
    Units
    12 mm - - Hexagon, Square - - - - - Chrome Vanadium Steel
    RS Stock No. 125-3051
    BrandRS PRO
    £192.34
    1 Set
    Set(s)
    8 → 19 mm - C-Gear Hexagon, Square - 160 (B06-10) mm, 175 (B06-11) mm, 175 (B06-12) mm, 185 (B06-13) mm, 195 (B06-14) mm, 21.2 (B05-38S) mm, 230 (B06-17) mm, 230 (B06-19) mm, 28.5 (B05-12S) mm, Bit Adapter: 16.4 (B05-14B) mm, Ratcheting Combination Wrench: 135 (B06-08) mm, Socket Adapter: 16.4 (B05-14S) mm - Mirror Chrome (Wrench) - Steel
    RS Stock No. 144-7959
    BrandRS PRO
    £7.22
    Each
    Units
    10 mm - 72 Tooth Gear Mechanism Open End, Ring Universal Ratchet - - - - CRV
    RS Stock No. 177-999
    Mfr. Part No.FR28SWEU
    £36.41
    Each
    Units
    1 in Adjustable - - Rubberized Comfort Grip 203 mm - - - -
    RS Stock No. 876-4913
    Mfr. Part No.64C.S1
    BrandFacom
    £23.39
    Each
    Units
    12 x 13 mm, 8 x 10 mm - - - - 150 mm - Satin Chrome - -
    RS Stock No. 382-9400
    Mfr. Part No.9110D
    £15.90
    Each
    Units
    10 mm Combination - - - 159 mm - Nickel Chrome Plated - Hardened Steel
    RS Stock No. 382-9444
    Mfr. Part No.9113D
    £18.72
    Each
    Units
    13 mm Combination - - - 178 mm - Nickel Chrome Plated - Hardened Steel
    RS Stock No. 123-1805
    Mfr. Part No.073295
    BrandWera
    £90.25
    Each
    Units
    1/2 in, 3/4 in, 7/16 in, 9/16 in - Joker Bi-Hexagon, Hexagon - 165 mm, 177 mm, 188 mm, 246 mm - - - -
    RS Stock No. 382-9488
    Mfr. Part No.9117D
    £22.30
    Each
    Units
    17 mm Combination - - - 225 mm - Nickel Chrome Plated - Hardened Steel
    RS Stock No. 123-0464
    Mfr. Part No.003660
    BrandWera
    £34.82
    Each
    Units
    1/4 in Fine Tooth Mechanism, Forward & Reverse Drive Switch Zyklop Mini 2 Bi-Hexagon Ergonomic, Kraftform 107 mm - - - Steel
    RS Stock No. 829-2844
    Mfr. Part No.467R.13
    BrandFacom
    £19.66
    Each
    Units
    13 mm 2-in-1 Open End, Double Ratchet, Durable Open End, Fast Work, Secure Work, Versatile 467R.13 - - 178 mm - Chrome - Chrome Vanadium Steel
    RS Stock No. 774-6716
    Mfr. Part No.073273
    BrandWera
    £18.86
    Each
    Units
    13 mm Combination, Double Ended Joker Hexagon - 177 mm - Nickel Chrome Plated - Chrome Molybdenum Steel
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