

🔩 Lock it down, but keep it flexible — the pro’s choice for precision fastening!
Loctite 38653 Purple Low Strength Thread Locker is a 6 ml gel adhesive designed for fasteners up to 6 mm that require secure bonding with easy future adjustments. Trusted by automotive professionals and hobbyists alike, it sets quickly (20 minutes) and fully cures in 24 hours, providing reliable vibration resistance without corrosion. Ideal for carburetors, small machinery, and delicate assemblies, it balances strong adhesion with effortless disassembly.









| ASIN | B0002KKTT0 |
| Best Sellers Rank | #3,515 in Automotive ( See Top 100 in Automotive ) #15 in Thread Lock Sealers |
| Brand | Loctite |
| Color | Purple |
| Customer Reviews | 4.8 4.8 out of 5 stars (2,006) |
| Date First Available | July 7, 2004 |
| Full Cure Time | 24 Hours |
| Global Trade Identification Number | 00079340386532 |
| Is Discontinued By Manufacturer | No |
| Item Form | Gel |
| Item Package Quantity | 1 |
| Item Volume | 6 Milliliters |
| Item Weight | 0.01 ounces |
| Item model number | 38653 |
| Manufacturer | Loctite |
| Manufacturer Part Number | 555339 |
| Material | Aluminum,Brass,Stainless |
| Model | Loctite 555339 Threadlocker 222 Low Strength Tube, Purple, 6-ml |
| Number of Pieces | 1 |
| OEM Part Number | 38653 |
| Package Information | Tube |
| Product Dimensions | 6.5 x 3.81 x 1.2 inches |
| Special Feature | Strong |
| Special Features | Strong |
| Specific Uses For Product | Fleet and plant maintenance. |
| UPC | 079340386532 |
| Viscosity | Low |
| Viscosity Level | Low |
| Water Resistance Level | Not Water Resistant |
T**M
Great product for working on RC cars and small machinery
I wish I knew this product existed a couple of years ago. I have been using the blue Loctite on my RC cars and often times fine that the blue still has too much holding strength for small fasteners. This purple formula works absolutely perfect on M3 and M4 set screws that do not require a more permanent fastening solution That you often get from the blue or red. I find the purple Loctite product to be superior for my needs and I highly recommend it for anyone who works on RC cars or small hobby items that may frequently need to be disassembled repaired and reassembled. Highly recommend this product. I
B**K
You don't always need medium strength
In one of my hobbies, blue, red, rocksett, are often suggested. After some research and reading, such strengths of threadlocker aren't always necessary or recommended. For smaller fasteners or those with finer threads, low strength is recommended. This is to avoid potentially stripping the fine threads or snapping the heads of small fasteners. So, when I was installing a red dot on a mount, I decided to use this. So far, after "a few" rounds, the optic is still firmly mounted and the zero hasn't shifted.
T**N
This is great stuff!!
they say low strength but it works perfect for a lock washer type of grip. I used this stuff for years in the 70's. I'm using it again because of its inherent ability to work just right.
A**.
Reliable Threadlocker for Securing Aluminum Parts
he Loctite 222 Threadlocker for Automotive (High-Temperature, Low-Strength, Anaerobic, One-Piece Assembly, Non-Corrosive, Purple, 6 ml Tube) has proven to be indispensable for my projects, especially when it comes to securing screws on aluminum parts. Given that many stores nearby do not carry this specific Loctite product, I was pleased to find it online. As with all Loctite products, it worked exactly as described. The low-strength formula is perfect for applications where easy disassembly is required, yet it still provides enough hold to keep screws securely in place under high temperatures and vibrations. The non-corrosive nature of the threadlocker also ensures that it does not damage the metal surfaces, maintaining the integrity of the components. For anyone needing a reliable threadlocker for automotive applications, especially on aluminum parts, I highly recommend the Loctite 222. It’s a trustworthy and effective solution for locking and sealing screws. 🚗🔩🛠️
D**R
Good stuff
I use a lot of the Loctite 242 variant for various projects and thought I would get this variant for a 3D printer build I am doing. So far it's working great and I will purchase more. I was going to purchase a large bottle of this but it seems there are a lot of phony versions of this on Amazon in the large size, so I purchased the small size and it seems to be the real deal and seems to work like it's supposed to.
T**R
My new color is Purple Loctite.
Purple is the only way to go. Great product
B**Y
Its Loctite, its dependable.
Low stress strength worked well on small engine project since I had to assemble/disassemble it many times.
J**R
Works great on small removable screws.
Works great on sight threads, action cover plate screws and ejector button threads. I was glad to find it. Degrease the threads with alcohol before using. A S&W wheelgunner’s friend. I also used a very small amount on Ruger pins.
S**N
Works great as always
F**1
Very effective on the adjustment screws on a watch strap
H**U
Bought this to use as spoke prep for a bicycle wheel build. This product is essentially bike spoke lubricant and is much cheaper than ParkTool spoke prep. It allows for screws to be adjusted while also reducing nuts from coming loose.
B**2
Genuine and quality product. Works as it should. Couldn’t find any loctite locally other than made in China ones. I’m glad Amazon stock this!
E**Z
Tenía la duda si me llegaría seco o viejo el producto pero, no tengo ninguna queja, todo bien.
Trustpilot
3 weeks ago
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