21 mm Offset Ratchet Ring Spanner YT-02383 YATO
Key information
Availability:Chwilowo niedostępny — zapytaj o termin
Shipping cost:From 3.28 Euro
catalog number:YT-02383
Availability:
EAN code:5906083049934
Product condition:New, originally packaged
Guarantee:24 months of consumer protection
Weight:0,39 kg
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21 mm Offset Ratchet Ring Spanner YT-02383 YATO
Ring spanner with a 72-tooth ratchet mechanism, made from CrV steel. The offset head design allows work in confined assembly spaces, removing the need to lift the spanner off the fastener after every turn.
Features of the ratchet ring spanner
72-tooth ratchet mechanism
72 teeth give a 5-degree working arc – the minimum sweep required to move the pawl onto the next tooth. This allows work in places where a full turn of the spanner is impossible, for example on bolts close to a wall or other structural components.
Chrome vanadium CrV steel
An alloy steel with added chromium and vanadium, which increases resistance to wear and distortion. A hardness of 42-48 HRC provides the right strength while retaining flexibility, minimising the risk of cracking under heavy loads.
Offset ring head design
The ring head is set at an angle to the handle, which increases clearance between the hand and the working surface. A practical solution when tightening fasteners fitted close to flat surfaces, where a standard straight spanner limits freedom of movement.
Direction change lever
A lever for changing the ratchet direction – forward/reverse – allows fast switching between tightening and loosening without removing the spanner from the fastener. The mechanism locks movement in the selected direction.
Technical specification
| Model | YT-02383 |
| Manufacturer | YATO |
| Spanner size | 21 mm |
| Type | Offset ratchet ring spanner |
| Number of ratchet teeth | 72 teeth |
| Working arc | 5° |
| Material | Chrome vanadium steel (CrV) |
| Hardness | 42-48 HRC |
| Direction lever | Yes (forward/reverse) |
Applications of the 21 mm ring spanner
- Removing and fitting road wheels – 21 mm wheel bolts and nuts
- Brake system work – brake calipers, hydraulic lines
- Fitting suspension components – control arm bolts, anti-roll bar links
- Steering system servicing – track rod and track rod end joints
- Exhaust system work – silencer and catalytic converter mountings
- Steel structure assembly – bolts in industrial installations
- Machine and equipment maintenance – M14-M16 fasteners
21 mm size compatibility
A 21 mm spanner fits metric M14 bolts and nuts (21 mm across flats). Before buying, verify the dimension with a vernier calliper or an adjustable spanner – the measurement is the distance between the parallel flats, not the thread diameter.
Use and maintenance
The ratchet mechanism requires periodic lubrication with lithium grease or tool oil. A lack of maintenance leads to pawl wear and reduced precision. After working in a damp environment or in contact with chemicals, clean the spanner and protect it against corrosion.
A ratchet ring spanner is not a substitute for a torque wrench when tightening to a specified torque. Using extensions or pipes to increase leverage can damage the ratchet mechanism. For seized fasteners, a fixed spanner without a mechanism is recommended.
The HRC hardness parameter
The Rockwell C scale (HRC) defines steel hardness. A range of 42-48 HRC indicates heat-treated steel – hardened and tempered. Values below 40 HRC indicate steel that is too soft and prone to distortion. Above 52 HRC the steel becomes brittle and may crack under load.
Commercial information
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