--- product_id: 48736745 title: "Penetrant Spray, Loosens Rust on Nuts, Bolt & Locks, 400ml" brand: "wd-40 specialist" price: "100.32 DT" currency: TND in_stock: true category: "Wd 40 Specialist" url: https://www.desertcart.tn/products/48736745-penetrant-spray-loosens-rust-on-nuts-bolt-and-locks-400ml store_origin: TN region: Tunisia --- # 360° Smart Straw for pinpoint accuracy operates from -20°C to +90°C 400ml precision spray volume Penetrant Spray, Loosens Rust on Nuts, Bolt & Locks, 400ml **Brand:** wd-40 specialist **Price:** 100.32 DT **Availability:** ✅ In Stock ## Summary > 🔧 Unlock stuck parts like a pro — never get rusted out again! ## Quick Answers - **What is this?** Penetrant Spray, Loosens Rust on Nuts, Bolt & Locks, 400ml by wd-40 specialist - **How much does it cost?** 100.32 DT with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/48736745-penetrant-spray-loosens-rust-on-nuts-bolt-and-locks-400ml) ## Best For - wd-40 specialist enthusiasts ## Why This Product - Trusted wd-40 specialist brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Deep Rust Penetration:** Break free seized bolts & nuts where others fail - • **Multi-Material Mastery:** Safe on metal, titanium, rubber, plastic & PVC - • **All-Weather Reliability:** Performs flawlessly from freezing cold to scorching heat - • **Precision Spray Control:** Smart Straw delivers exact spray, reducing waste & mess - • **Long-Lasting Corrosion Shield:** Water-resistant barrier extends maintenance intervals ## Overview WD-40 Specialist Penetrant Spray is a professional-grade, 400ml aerosol designed to rapidly loosen rusted nuts, bolts, hinges, and locks. Engineered for mechanics and industrial use, it works safely on multiple materials and across extreme temperatures (-20°C to +90°C). Featuring a 360° Smart Straw for precise application, it also deposits a durable, water-resistant anti-corrosion barrier to extend equipment life and reduce maintenance frequency. ## Description This professional-grade penetrant spray frees stuck parts, removes rust, and provides long-lasting lubrication. Ideal for automotive, marine, and industrial use. ## Features - Causes skin irritation. - Extremely flammable aerosol. - May be fatal if swallowed and enters airways. - May cause drowsiness or dizziness. - Pressurised container: May burst if heated. - Toxic to aquatic life with long lasting effects. - Penetrating Oil for Rust: The low surface tension formula penetrates deep into rusted threads and corroded joints, rapidly freeing seized bolts, nuts, and fixings where general-purpose sprays fail, the professional's choice from WD-40 Specialist. - Multi-Surface Rust Release: Loosens rusted hinges, stuck locks, and stiff chains while safe for use on metal, stainless steel, titanium, rubber, plastic, and PVC, performing reliably from -20°C to +90°C. - Lasting Corrosion Protection: Deposits a water-resistant barrier that delivers anti-rust and corrosion protection to guard bearings, pipes, conveyor belts, and exposed fixings against future build-up to extend service intervals between maintenance. - Professional-Grade Performance: Engineered for mechanics, engineers, and professionals who demand consistent results, this industrial-strength penetrating spray operates across a wide temperature range for workshop, garage, and field applications. - Precision Smart Straw Control: Reach tight spaces and awkward angles with the integrated Smart Straw for pinpoint accuracy, or flip down for broad coverage, the 360° valve enables spraying in any orientation, reducing product waste and time. - Specialist Maintenance System: Pre-clean with WD-40 Specialist Degreaser spray, apply Penetrant spray to free seized components, then protect with White Lithium Grease for lasting lubrication, or add Cutting Oil for drilling and metalwork. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B006UCJ5NU | | Best Sellers Rank | 822 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 (1,221) | | 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 | | UPC | 013523004028 616268302482 | | Unit Count | 400.0 millilitre | | Upper Temperature Rating | 90 Degrees Celsius | | Viscosity | 0w | ## Product Details - **Brand:** WD-40 Specialist - **Item weight:** 374 Grams - **Liquid volume:** 0.4 Litres - **Material:** Grease, Metal, Plastic - **Package information:** Tin ## Images ![Penetrant Spray, Loosens Rust on Nuts, Bolt & Locks, 400ml - Image 1](https://m.media-amazon.com/images/I/61gRmO22SaL.jpg) ## Available Options This product comes in different **Size** options. ## Frequently Bought Together - WD-40 Specialist Penetrant Spray - Professional-Grade Lubrication for Mechanics and Industrial Applications - 400ml - Rust-Busting Formula - WD-40 Specialist Silicone Spray Lubricant 400ml Can - Versatile All-Weather Protection for Extended Tool Life, Repels Moisture, Dust, and Grime - Smart Straw Applicator Included - WD-40 Multi-Use Smart Straw 450ml Spray Aerosol Can Clean Rust Lubricant, blue --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.tn/products/48736745-penetrant-spray-loosens-rust-on-nuts-bolt-and-locks-400ml](https://www.desertcart.tn/products/48736745-penetrant-spray-loosens-rust-on-nuts-bolt-and-locks-400ml) --- *Product available on Desertcart Tunisia* *Store origin: TN* *Last updated: 2026-09-13*