Ratchet Spanners

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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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    รายละเอียดสินค้า / Description ราคา / Price Size Special Features Model Shape Handle Type Overall Length VDE/1000V Approved Finish Height Safe Material
    RS Stock No. 487-034
    Brand :RS PRO
    THB320.98
    Each
    Units
    13 mm Combination - - - 180 mm - Chrome - Chrome Vanadium Steel
    RS Stock No. 487-208
    Brand :RS PRO
    THB294.29
    Each
    Units
    8 mm Combination - - - 136 mm - Chrome - Chrome Vanadium Steel
    RS Stock No. 487-038
    Brand :RS PRO
    THB403.20
    Each
    Units
    17 mm Combination - - - 233 mm - Chrome - Chrome Vanadium Steel
    RS Stock No. 181-783
    Brand :RS PRO
    THB444.30
    Each
    Units
    7 mm, 8 mm Double Ended Ring - Hexagon - - - Black - Chrome Vanadium Steel
    RS Stock No. 181-812
    Brand :RS PRO
    THB563.96
    Each
    Units
    13 mm, 14 mm Double Ended Ring - Hexagon - - - Black - Chrome Vanadium Steel
    RS Stock No. 144-7566
    Brand :RS PRO
    THB3,234.00
    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. 487-218
    Brand :RS PRO
    THB705.39
    Each
    Units
    17 mm Pivot Head; Flexible - - - 233 mm - Chrome - Chrome Vanadium Steel
    RS Stock No. 487-189
    Brand :RS PRO
    THB405.45
    Each
    Units
    8 mm Pivot Head; Flexible - - - 136 mm - Chrome - Chrome Vanadium Steel
    RS Stock No. 487-040
    Brand :RS PRO
    THB441.49
    Each
    Units
    22 mm Combination - - - 285 mm - Chrome - Chrome Vanadium Steel
    RS Stock No. 181-806
    Brand :RS PRO
    THB567.46
    Each
    Units
    11 mm, 12 mm Double Ended Ring - Hexagon - - - Black - Chrome Vanadium Steel
    RS Stock No. 144-7961
    Brand :RS PRO
    THB425.00
    Each
    Units
    13 mm - 72 Tooth Gear Mechanism Open End, Ring Universal Ratchet - - - - CRV
    RS Stock No. 911-1493
    Brand :RS PRO
    THB2,134.54
    Each
    Units
    24 x 30 mm - - - Insulated 295 mm Yes - - Chrome Vanadium Steel
    RS Stock No. 487-056
    Brand :RS PRO
    THB288.74
    Each
    Units
    10 mm Combination - - - 160 mm - Chrome - Chrome Vanadium Steel
    RS Stock No. 911-1487
    Brand :RS PRO
    THB1,660.33
    Each
    Units
    13 x 17 mm - - - Insulated 240 mm Yes - - Chrome Vanadium Steel
    RS Stock No. 668-5786
    Brand :RS PRO
    THB973.46
    Each
    Units
    3/8 in Mini Head; Reversible - Square - - - Black Chrome Plated - Chrome Vanadium Steel
    RS Stock No. 487-028
    Brand :RS PRO
    THB250.68
    Each
    Units
    11 mm Combination - - - 168 mm - Chrome - Chrome Vanadium Steel
    RS Stock No. 487-214
    Brand :RS PRO
    THB759.26
    Each
    Units
    19 mm Pivot Head; Flexible - - - 248 mm - Chrome - Chrome Vanadium Steel
    RS Stock No. 125-3051
    Brand :RS PRO
    THB8,788.87
    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. 487-264
    Brand :RS PRO
    THB617.42
    Each
    Units
    13 mm Pivot Head; Flexible - - - 180 mm - Chrome - Chrome Vanadium Steel
    RS Stock No. 487-220
    Brand :RS PRO
    THB479.30
    Each
    Units
    10 mm Pivot Head; Flexible - - - 160 mm - Chrome - Chrome Vanadium Steel
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