Nut Splitters

About Nut Splitters

Nut splitters are specialised hand tools designed to remove damaged, corroded, or seized nuts without damaging the underlying bolt or stud thread. When fasteners become rusted solid or rounded off through years of exposure to the elements, these tools provide a controlled solution by applying concentrated force to split the nut along one face. This allows removal and replacement without resorting to destructive methods like angle grinders or cutting torches that risk damaging surrounding components.

MyToolShed.co.uk stocks nut splitter sets from trusted manufacturers including Sealey and Draper, available in various sizes to accommodate different nut dimensions. These precision-engineered tools feature hardened cutting blades that are driven into the nut's flat surface using a hex key, cleanly breaking through the material whilst preserving the bolt thread for immediate reuse with a replacement nut.

Applications

Nut splitters are essential tools across numerous trades and industries:

• Motor mechanics and vehicle technicians: Removing corroded exhaust nuts, suspension components, and engine fasteners on older vehicles
• Agricultural engineers: Maintaining farm machinery exposed to harsh outdoor conditions where seized nuts are commonplace
• Plant and machinery fitters: Servicing industrial equipment with long-term installations subject to corrosion
• Marine engineers: Working on boats and maritime equipment where saltwater accelerates fastener deterioration
• Plumbers and heating engineers: Removing seized nuts on pipework, radiator valves, and central heating systems
• General maintenance engineers: Dealing with seized fasteners across various industrial and commercial maintenance scenarios
• DIY enthusiasts: Tackling restoration projects, vehicle repairs, and home maintenance involving corroded fixings

Choosing The Right Nut Splitters

When selecting nut splitters at MyToolShed.co.uk, consider the size range of nuts you typically encounter. Multi-piece sets offer the best value and versatility, with three-piece sets covering common metric sizes from 9mm to 27mm—adequate for most automotive and general engineering applications. Two-piece sets suit tradespeople working within a narrower size range.

Material quality is paramount. Look for nut splitters manufactured from hardened and tempered steel with precisely machined cutting blades that maintain their edge through repeated use. The hex drive should accept standard Allen keys, with 10mm and 12mm being most common. Consider throat depth if you regularly work in confined spaces or need to reach nuts positioned far along a stud. Sets supplied in blow-moulded cases keep tools protected and organised in your van or workshop.

Safety Information

Always wear appropriate eye protection meeting BS EN 166 standards when using nut splitters, as the splitting action can produce sharp metal fragments. Ensure secure workpiece mounting using a vice or suitable clamping to prevent slippage. Inspect your nut splitter before each use for signs of wear, cracks, or blade damage. Apply force steadily and progressively rather than using impact movements. Be aware that freshly split nuts have extremely sharp edges—handle and dispose of them carefully to prevent injury.

Frequently Asked Questions

Will a nut splitter damage the bolt thread?

When used correctly, nut splitters are designed specifically to split the nut without damaging the underlying bolt or stud thread. The cutting blade applies force only to the nut itself, leaving the thread intact and reusable once you fit a replacement nut.

What size nut splitter set do I need?

For general automotive and light engineering work, a set covering 9mm to 27mm provides adequate coverage for most common metric fasteners. A three-piece set typically offers better value and versatility than purchasing individual sizes.

Can nut splitters work on stainless steel nuts?

Quality hardened nut splitters can split stainless steel nuts, though they require more force than standard mild steel fixings. Applying penetrating fluid beforehand and using steady, controlled pressure yields the best results.