When a nut is seized beyond recovery, the right response isn’t more torque — it’s a nut splitter. This industrial-grade 3-piece set is built from hardened alloy steel with a precision-machined cutting blade that bites into the flat of the nut and cracks it apart without touching the bolt thread underneath. Four size ranges cover the fasteners most commonly encountered in vehicle repair, machinery maintenance, and workshop work — select the range that matches your application and the tool does the rest cleanly and without damaging the surrounding components.
Engine bay, suspension components, general mechanical
16–22mm
16mm to 22mm across flats
Heavy suspension, axle nuts, agricultural and industrial machinery
22–27mm
22mm to 27mm across flats
Large fasteners, truck/heavy vehicle, industrial plant equipment
* Each set contains 3 pieces covering the selected size range. Measure the nut across the flats (not corner to corner) to identify the correct range. When in doubt, size up.
Not Best For
Nuts below 9mm or above 27mm — outside this range the tool will not seat correctly
Spark plug removal — requires dedicated removal sockets with appropriate torque control
Precision or fine-thread fasteners where alternative removal methods are still available — nut splitting is a last resort that destroys the nut
Undamaged, free-turning nuts — designed for seized, corroded, or stripped fasteners only
Product Details
Set Contents: 3 pieces per set (covering the selected size range)
Material: Hardened alloy steel
Blade: Precision-machined cutting blade
Size Ranges: 9–12mm, 12–16mm, 16–22mm, 22–27mm (select at variant level)
Measurement: Size refers to nut width across flats (AF), not corner to corner
Action: Splits the nut by driving the cutting blade into the flat face; preserves the bolt thread when used correctly
Package Includes: 3-piece nut splitter set in selected size range
Why This Product
Thread preservation where other methods fail: Unlike drilling out or grinding off, a nut splitter cracks the nut laterally — when applied correctly it leaves the bolt thread intact and ready for a new nut, avoiding the cost and labour of bolt replacement or re-tapping
Hardened alloy steel for industrial loads: The cutting blade is precision-machined and hardened to withstand the substantial force required to split seized or heavily corroded fasteners without deforming or chipping under repeated use
Four ranges cover the majority of workshop scenarios: From small bodywork fasteners at 9mm to heavy truck and plant equipment nuts at 27mm
3-piece set provides tool redundancy: Multiple pieces means backups for the same range — useful in a professional workshop context where a tool may need replacement mid-job or when working through a batch of similarly seized fasteners
Faster than alternatives in the right situation: When penetrating oil and heat have failed, a nut splitter resolves the problem in minutes rather than hours of repeated re-soaking and heating cycles
Care & Maintenance
Cleaning: Wipe clean after each use to remove swarf, rust residue, and debris from the cutting blade and body
Blade inspection: Inspect the cutting blade edge before each use; a chipped or deformed blade will reduce splitting efficiency and may slip under load
Lubrication: Apply a light film of machine oil to the screw mechanism periodically to maintain smooth operation
Storage: Store dry; a light oil wipe before storage in humid environments prevents surface rust
Correct use: Ensure the splitter is fully and correctly seated on the nut before applying load — a partially seated tool can slip and damage surrounding components
FAQ
Which size range do I need? Measure the nut across the flats (the parallel sides, not corner to corner) using a calliper or adjustable wrench. Match that measurement to the appropriate range. If your measurement sits at the boundary between two ranges, select the larger range.
Will this damage the bolt thread? When correctly seated on the nut flat and tightened gradually, the splitter cracks the nut without contacting the thread. Incorrect seating or excessive speed of application can cause slippage that may damage surrounding threads.
How many pieces are in the set? Each set contains 3 pieces covering the selected size range. All 4 size ranges are available as separate set purchases.
Can I use this on rounded or stripped nuts? Yes. The cutting blade engages with the body of the nut directly, not the corners — making it effective on fasteners where conventional sockets can no longer grip.
Should I try penetrating oil first? Yes. Penetrating oil (and heat where safe) should always be the first approach. Nut splitting is a last resort as the nut is destroyed in the process.
Stock & Availability Notes
Stock levels across all size ranges are currently limited. If you require multiple sets or a specific range for an upcoming job, we recommend ordering promptly to secure availability.
Contact us before ordering if you need to confirm current stock for a specific range or require multiple sets for a workshop or fleet application.
Extended coverage and protection plans available upon request — contact us for details.
Shipping & Handling
Protective packaging: Each set is packed securely to prevent movement and damage in transit
Shipping: Standard international shipping with tracking; estimated delivery 7–21 business days depending on destination
Damage on arrival: Inspect the set on receipt; photograph and report any damage within 24 hours
VAT & duties: VAT and customs duties are prepaid on most standard-sized orders.
Size ranges refer to nut width across flats (AF). Each set contains 3 pieces covering the selected range. Always ensure the tool is correctly seated before applying load. Use appropriate personal protective equipment when splitting corroded fasteners. Not suitable for nuts outside 9–27mm AF range. Nut splitter destroys the nut — bolt thread preservation depends on correct application.
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In stockEnjoy worldwide shipping with same-day dispatch on eligible items and 3–7 business days for most regular orders. Delivery time depends on the shipping method you choose, and the estimated arrival date is shown on each product page. For most regions, we prepay Value-Added Tax (VAT) and customs duties to ensure a smooth, hassle-free delivery. In rare cases where a local customs office applies additional fees, these are outside our control and must be paid by the customer to release the package. Full details can be found across our policy pages, including International Shipping,Shipping & Handling, and Returns & Exchanges.
In stockEnjoy worldwide shipping with same-day dispatch on eligible items and 3–7 business days for most regular orders. Delivery time depends on the shipping method you choose, and the estimated arrival date is shown on each product page. For most regions, we prepay Value-Added Tax (VAT) and customs duties to ensure a smooth, hassle-free delivery. In rare cases where a local customs office applies additional fees, these are outside our control and must be paid by the customer to release the package. Full details can be found across our policy pages, including International Shipping,Shipping & Handling, and Returns & Exchanges.
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