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🔧 Unlock Rust’s Grip Like a Pro — Don’t Get Stuck Behind!
WD-40 Specialist Penetrant Spray is a professional-grade, 400ml rust-busting solution engineered to rapidly free seized nuts, bolts, hinges, and locks. Its advanced low surface tension formula penetrates deep into rust and corrosion, working safely across multiple materials and extreme temperatures (-20°C to +90°C). Featuring a 360° Smart Straw for precise application, it also deposits a water-resistant barrier to protect against future rust, making it the go-to choice for mechanics, engineers, and industrial pros aiming to extend equipment life and reduce downtime.
| Asin | B006UCJ5NU |
| Best Sellers Rank | 750 in DIY & Tools (See Top 100 in DIY & Tools) 9 in Lubricants |
| Brand Name | WD-40 Specialist |
| Compatible Material | metal,stainless steel,titanium,rubber,plastic,PVC |
| Container Type | Tin |
| Country Of Origin | United Kingdom |
| Customer Reviews | 4.8 4.8 out of 5 stars (1,219) 4.8 out of 5 stars |
| Flash Point | 44 Degrees Celsius |
| Global Trade Identification Number | 05032227443488 |
| Included Components | 1 x WD40 Specialist Penetrant Aerosol 400Ml |
| Item Form | liquid |
| Item Highlight | Rust Penetrating Oil Spray, Smart Straw, Quickly Loosens All Stuck, Seized & Rusted, For Corroded Nuts, Bolts, Hinges & Locks |
| Item Type Name | Specialist Fast Release Penetrant with Smart Straw 400 ml |
| Item Weight | 374 Grams |
| Liquid Volume | 0.4 Litres |
| Manufacturer | WD-40 Company |
| Material | Grease, Metal, Plastic |
| Model Number | 7780195-HHW |
| Number Of Items | 1 |
| Number Of Packs | 1 |
| Part Number | 443488-BPSSA02589 |
| Product Warranty | Na. |
| Recommended Uses For Product | Automotive, Marine, Industrial, Nuts, Bolts, Screws, Locks, Pipes, Taps |
| Sae J300 Viscosity Grade | 0W |
| Specific Uses For Product | Car,Wheel,Window |
| Unit Count | 400.0 millilitre |
| Upc | 013523004028 616268302482 |
| Upper Temperature Rating | 90 Degrees Celsius |
| Viscosity | 0w |
User
Works fast on stuck bolts – a must-have in the toolbox
I recently added the WD-40 Specialist Penetrant Spray to my toolkit, and it has already proven its value. I used it on a couple of stubborn, rusted bolts in my bike and an old garden tool, and within minutes the parts loosened up with very little effort. The spray penetrates quickly and doesn’t have the messy residue that some similar products leave behind.The nozzle gives a controlled spray, so you can target tight areas without wasting product. The smell is noticeable but not overpowering, and it doesn’t linger for long.One thing to keep in mind is that this is designed mainly as a penetrant and not as a long-term lubricant, so after freeing stuck parts it’s best to apply something else if you want ongoing protection.Overall, this is an effective, reliable product that does exactly what it promises. Definitely worth keeping on hand for household repairs, bikes, cars, or any mechanical projects.
User
Very effective product
Very good stuff. It loosened a rusted nut and bolt on my scaffold tower. I’d tried everything to no avail but this worked really effectively.
User
Does what it says on the tin
Worked well on seized bolts and rusty hinges. The Smart Straw makes it easy to apply accurately without wasting product. A useful addition to any toolbox.
User
WD-40 Specialist Penetrant Spray, 400ml, Rust Penetrating Oil Spray for Loosening
This worked brilliantly on seized suspension bolts that hadn't moved in years. The Smart Straw is very useful for directing the spray exactly where it's needed and the penetrating action is noticeably better than standard WD-40. Highly recommended.
User
Does what it says on the tin.
WD-40: A name to trust when it comes to rust. Thank you!
User
WD-40 Specialist Penetrant Spray, 400ml, Rust Penetrating Oil Spray for Loosening Rusted Nuts
I needed this WD-40 to try and get a stuck nut undone on my motorbike.Sprayed several times to help free it. After about 1 hour it worked. The nut came off.Easy to use. Nice big can.Priced at £8.99 it's a good deal.Gets a good 4-5.
User
Does what it says
Good stuff didn't know WD Did did all the different sprays
User
Works well
Great stuff
Trustpilot
3 weeks ago
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