--- product_id: 1998120 title: "242 Threadlocker for Automotive: High-Temp, Medium-Strength, Anaerobic | Blue, 6mL Tube (PN: 37418 - 487229)" price: "Β₯2949" currency: JPY in_stock: true reviews_count: 13 url: https://www.desertcart.jp/products/1998120-242-threadlocker-for-automotive-high-temp-medium-strength-anaerobic-blue store_origin: JP region: Japan --- # Medium-strength hold Blue formula for easy ID Sets in 5 minutes 242 Threadlocker for Automotive: High-Temp, Medium-Strength, Anaerobic | Blue, 6mL Tube (PN: 37418 - 487229) **Price:** Β₯2949 **Availability:** βœ… In Stock ## Summary > πŸ”© Lock it down today, or risk it coming loose tomorrow! ## Quick Answers - **What is this?** 242 Threadlocker for Automotive: High-Temp, Medium-Strength, Anaerobic | Blue, 6mL Tube (PN: 37418 - 487229) - **How much does it cost?** Β₯2949 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/1998120-242-threadlocker-for-automotive-high-temp-medium-strength-anaerobic-blue) ## Best For - Customers looking for quality international products ## Why This Product - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - β€’ **Quick-Setting Formula:** Starts curing in 5 minutes, full strength in 24 hours for fast project turnaround - β€’ **Reusable & Convenient:** 6mL tube with resealable cap for multiple maintenance sessions - β€’ **Trusted by Professionals:** OEM-specified and lab-tested for automotive-grade reliability - β€’ **Durable Vibration Resistance:** Locks bolts tight to prevent loosening under stress and shock - β€’ **Universal Metal Compatibility:** Works seamlessly on stainless steel, aluminum, and plated surfaces ## Overview LOCTITE 242 Threadlocker Blue is a medium-strength, high-temp anaerobic adhesive trusted by automotive pros and OEMs. It bonds all metals, sets quickly in 5 minutes, and fully cures in 24 hours, delivering durable vibration resistance for nuts and bolts. Packaged in a handy 6mL tube, it’s perfect for automotive repairs, maintenance, and multi-industry applications requiring reliable, reusable thread locking. ## Description The LOCTITE Automotive Threadlocker Blue 242 is a high-temp, medium-strength threadlocker trusted by professionals and OEM-specified. Designed by auto manufacturers and lab tested, it works on all metals, including stainless steel, aluminum, and plated surfaces, making it perfect for securing nuts and bolts in automotive applications. Ideal for valve cover bolts, water pump bolts, oil pan bolts, and more, it provides a reliable hold that resists vibration and loosening. This product is great for automotive maintenance and other settings where regular servicing is required. It sets in just 5 minutes and fully cures within 24 hours, delivering long-lasting performance. With a 6 ml tube, LOCTITE Blue 242 is a dependable, easy-to-use solution for any automotive repair or maintenance project. Review: A great product with a history of working well in difficult applications! - I started using Loctite products over 45 years ago and I learned how well it performed while assembling aluminum parts for instrumentation. I now use it on my guns as I assemble them to prevent parts from coming loose from shock and vibration. I just put together a new AR15 build and I used it all over the gun for the accessory parts. I installed a new Magpul MIAD pistol grip, a Magpul vertical rail grip, a tactical flashlight, a Magpul front and rear MBUS set of sights, a Vortex 3X flip up scope and a Daniels Defense Omega Free floating hand guard quad rail. All of the screws and Allen head screws had Loctite applied as I did the assembly. I even applied it to the mounting screws on the Aimpoint Pro red dot sight. I like the blue Loctite as it helps to hold the screws more securely in place and helps to prevent corrosion which is important on a rifle or gun. The blue formulation locks the parts in place but you can still take the gun apart when you need to. I recommend that you not use the red Loctite on gun assembly and it is very difficult to take apart as it has a much stronger holding power. This is a great product with a proven history of working in difficult applications. I rated it at 5 stars and I recommend it to you. Review: Works good! - Affordable, and happy it came in a small size as I didn't need a lot. Seems to hold well, easy to use, and with the cap you can seal it right back up and use it for later. Will be buying more. Hope this helps! ## Features - Trusted by Professionals: Our blue LOCTITE automotive thread locker products are not just OEM-specified, they are trusted by professionals because they are designed by auto manufacturers and lab tested (PN: 37418 - 487229) - Works on all metals: Works on all metals, including passive substrates such as stainless steel, aluminum, and plated surfaces; ideal for all nut and bolt applications. - Reliable & Durable Performance: Optimal for use in automotive applications as well as a variety of other settings where regular maintenance, repairs, or servicing are necessary, offering a reliable and durable solution for long-term performance across multiple industries - Multi-Application: Great for valve cover bolts, water pump bolts, oil pan bolts, drive shaft bolts, rocker arm adjustment nuts, carburetor studs - Quick-setting for convenience: The product begins setting in just 5 minutes, giving you a quick start on your project, and reaches its full strength after 24 hours, ensuring a complete and durable cure by the next day ## Technical Specifications | Specification | Value | |---------------|-------| | Customer Reviews | 4.8 out of 5 stars 1,599 Reviews | ## Product Details - **Brand:** Loctite - **Item Form:** Liquid - **Material:** threadlocker - **Special Feature:** Strong - **Specific Uses For Product:** Fleet and plant maintenance. ## Images ![242 Threadlocker for Automotive: High-Temp, Medium-Strength, Anaerobic | Blue, 6mL Tube (PN: 37418 - 487229) - Image 1](https://m.media-amazon.com/images/I/61fA8653cRL.jpg) ![242 Threadlocker for Automotive: High-Temp, Medium-Strength, Anaerobic | Blue, 6mL Tube (PN: 37418 - 487229) - Image 2](https://m.media-amazon.com/images/I/91UGqIfCHgL.jpg) ![242 Threadlocker for Automotive: High-Temp, Medium-Strength, Anaerobic | Blue, 6mL Tube (PN: 37418 - 487229) - Image 3](https://m.media-amazon.com/images/I/71dqkWK6cDL.jpg) ![242 Threadlocker for Automotive: High-Temp, Medium-Strength, Anaerobic | Blue, 6mL Tube (PN: 37418 - 487229) - Image 4](https://m.media-amazon.com/images/I/71Vi7okl0PL.jpg) ![242 Threadlocker for Automotive: High-Temp, Medium-Strength, Anaerobic | Blue, 6mL Tube (PN: 37418 - 487229) - Image 5](https://m.media-amazon.com/images/I/51wodeBKKWL.jpg) ## Questions & Answers **Q: Can i use this on metal set screws going into a plastic housing??** A: No, this is for metal-to-metal applications. Loctite 425 is recommended for plastic-to-plastic and plastic-to-metal applications. **Q: Is this product ideal for locking my camera strap screw in place?** A: Yes, I'm using blue Loctite for a BlackRapid strap in a DSLR tripod screw hole. I've also used it for securing Arca-Swiss tripod plates to camera bodies. **Q: Is this good for Conceal Carry holster screws?** A: To tell you the truth, I don't have any issues with my Conceal Carry holster screws coming loose. But if I did, Loctite 242 is the first place I would go because the idea of losing all of the screws in my Conceal Carry holster is unconscionable. **Q: Does it interfere when using a torque wench?** A: I always heat up the hardware with a heat gun. This softens the bonding, reducing strain of removals. ## Customer Reviews ### ⭐⭐⭐⭐⭐ A great product with a history of working well in difficult applications! *by J***O on February 7, 2016* I started using Loctite products over 45 years ago and I learned how well it performed while assembling aluminum parts for instrumentation. I now use it on my guns as I assemble them to prevent parts from coming loose from shock and vibration. I just put together a new AR15 build and I used it all over the gun for the accessory parts. I installed a new Magpul MIAD pistol grip, a Magpul vertical rail grip, a tactical flashlight, a Magpul front and rear MBUS set of sights, a Vortex 3X flip up scope and a Daniels Defense Omega Free floating hand guard quad rail. All of the screws and Allen head screws had Loctite applied as I did the assembly. I even applied it to the mounting screws on the Aimpoint Pro red dot sight. I like the blue Loctite as it helps to hold the screws more securely in place and helps to prevent corrosion which is important on a rifle or gun. The blue formulation locks the parts in place but you can still take the gun apart when you need to. I recommend that you not use the red Loctite on gun assembly and it is very difficult to take apart as it has a much stronger holding power. This is a great product with a proven history of working in difficult applications. I rated it at 5 stars and I recommend it to you. ### ⭐⭐⭐⭐⭐ Works good! *by J***Y on March 20, 2025* Affordable, and happy it came in a small size as I didn't need a lot. Seems to hold well, easy to use, and with the cap you can seal it right back up and use it for later. Will be buying more. Hope this helps! ### ⭐⭐⭐⭐⭐ The perfect thread locker to stop screws, nuts and bolts from coming off accidentally *by A***Z on April 13, 2015* Don't want screws to come out or nuts to fall off? Get Loctite. I've ben using this stuff for years, most recently to stop a screw in a office chair from falling out. Loctite holds things securely, but can be deliberately "broken" with a sharp twist of a screwdriver or wrench. I'd call this a "medium duty" thread locker -- great for chairs, eyeglasses, gun parts, and just about anything threaded not subject to intense vibration. For example, I would use Loctite Blue on interior parts of a car, but not on screws related to the drivetrain. I find Loctite Blue to work well with metal and strong, stiff plastics. It does not make a good bond with porous materials like wood, sheetrock or concrete, or on very bendable plastics. It handles weather quite well, so you can use it for outdoor applications. I have never had a piece secured by Loctite Blue come apart accidentally, and I've also never had problems "breaking" the Loctite to get the screw, nut or bolt out. By the way, there is an industrial strength version, Loctite Red. However, it is extremely difficult to remove Loctite Red, so only use it in situations where you don't plan to ever remove the screw, nut or bolt. ## Frequently Bought Together - LOCTITE 242 Threadlocker for Automotive: High-Temp, Medium-Strength, Anaerobic | Red, 6mL Tube (PN: 37418 - 487229) - Loctite Threadlocker Blue 242 - Removable Thread Lock Glue for Nuts, Bolts, & Fasteners, Medium Strength Screw Glue to Prevent Loosening & Corrosion - 6 ml, 1 Pack - LOCTITE 263 Threadlocker for Automotive: High-Strength, Oil Tolerant, High-Temperature, Fluorescent, Anaerobic, Heavy Duty Applications | Red, 6 ml Tube (PN: 2203451) --- ## Why Shop on Desertcart? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.jp/products/1998120-242-threadlocker-for-automotive-high-temp-medium-strength-anaerobic-blue](https://www.desertcart.jp/products/1998120-242-threadlocker-for-automotive-high-temp-medium-strength-anaerobic-blue) --- *Product available on Desertcart Japan* *Store origin: JP* *Last updated: 2026-05-20*