---
product_id: 47271498
title: "24350, Surface Insensitive THREADLOCKER Blue 50 ML BTL"
brand: "permatex"
price: "€ 81.09"
currency: EUR
in_stock: true
reviews_count: 13
category: "Permatex"
url: https://www.desertcart.at/products/47271498-24350-surface-insensitive-threadlocker-blue-50-ml-btl
store_origin: AT
region: Austria
---

# Medium/high strength for 6-20mm fasteners Removable with hand tools for easy disassembly Oil resistant, prevents vibration loosening 24350, Surface Insensitive THREADLOCKER Blue 50 ML BTL

**Brand:** permatex
**Price:** € 81.09
**Availability:** ✅ In Stock

## Summary

> 🔧 Lock it down, loosen it up — the blue threadlocker pros trust!

## Quick Answers

- **What is this?** 24350, Surface Insensitive THREADLOCKER Blue 50 ML BTL by permatex
- **How much does it cost?** € 81.09 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.at](https://www.desertcart.at/products/47271498-24350-surface-insensitive-threadlocker-blue-50-ml-btl)

## Best For

- permatex enthusiasts

## Why This Product

- Trusted permatex brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Easy Disassembly Without Damage:** Removable by hand tools, so maintenance and repairs stay hassle-free without compromising hold.
- • **Trusted by Professionals & DIYers Alike:** Top-rated with 4.7 stars and proven performance on transmissions, firearms, and more.
- • **Reliable Hold on Slightly Oiled Fasteners:** Works flawlessly on 1/4" to 3/4" bolts with minor oil films, ensuring no slip under pressure.
- • **Vibration-Proof Your Critical Connections:** Specially formulated to prevent loosening from constant vibration—ideal for automotive and machinery use.
- • **Oil Resistant Formula for Real-World Conditions:** Maintains strength even when exposed to oil, giving you confidence in tough environments.

## Overview

Permatex Surface Insensitive Threadlocker Blue 50ml is a medium to high strength polymer adhesive designed for 6mm to 20mm fasteners with slight oil contamination. It prevents vibration loosening and resists oil exposure while allowing easy removal with hand tools, making it a versatile and reliable choice for automotive, industrial, and DIY applications.

## Description

Permatex’s Surface insensitive Threadlocker Blue is ideal for fasteners 1/4″ to 3/4″ (6mm to 20mm) that have a with a slight oil film. Surface Insensitive Threadlocker Blue is an oil resistant formulation that also prevents against vibration loosening. Removable with hand tools for easy disassembly.

Review: Perfect application for transmission bolts - I used this Permatex blue thread locker for my 2006 Lexus ES330. After changing the transmission filter, I cleaned the mating surface, added gasket and screwed the pan into the transmission. I added this blue thread locker to each bolt for a total of 18 bolts and tightened up in zig zag pattern. The bottle was enough for all 18 bolts and had some leftover. I believe with this size, it should be enough for two vehicles. It is not only cheaper than Loctile but also provides same strength. It is versatile for other applications as well. It is easy to use and provide great consistency. Until now, the pan has no problems: no oil leaking, no signs of loosening. Great product.
Review: Permatex - Great Stuff - I bought this to use when I modify my guns. It works quite well. Buy THIS BRAND, not some knock off brand that will leave you frustrated. Don't say I didn't warn you...

## Features

- Medium/high strength threadlocker for general purpose applications
- Well suited for 1/4" to 3/4" (6mm to 20mm) fasteners that have a slight oil film
- Prevents vibration loosening
- Oil resistant
- Removable with hand tools for easy disassembly

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B000OE0QGK |
| Best Sellers Rank | #1,430 in Automotive ( See Top 100 in Automotive ) #5 in Thread Lock Sealers #2,050 in Oils & Fluids |
| Brand | Permatex |
| Brand Name | Permatex |
| Color | Blue |
| Compatible Material | Alloy Steel, Aluminum, Brass, Metal |
| Customer Reviews | 4.7 out of 5 stars 1,642 Reviews |
| Global Trade Identification Number | 00686226243508 |
| Included Components | Threadlocker |
| Item Dimensions | 1.2 x 2.4 x 6.5 inches |
| Item Form | Liquid, Paste |
| Item Type Name | Threadlocker |
| Item dimensions L x W x H | 1.2 x 2.4 x 6.5 inches |
| Manufacturer | Permatex |
| Material | Polymer |
| Material Type | Polymer |
| Model | 24350 |
| Number of Items | 1 |
| Number of Packs | 1 |
| Part Number | PTX24350 |
| Style | Liquid - Surface Insensitive |
| Style Name | Liquid - Surface Insensitive |
| Surface Recommendation | Miscellaneous |
| UPC | 686226243508 |
| Unit Count | 1 Count |
| Water Resistance Level | Not Water Resistant |

## Product Details

- **Material:** Polymer
- **Brand:** Permatex
- **Style:** Liquid - Surface Insensitive
- **Item dimensions L x W x H:** 1.2 x 2.4 x 6.5 inches
- **Water Resistance Level:** Not Water Resistant

## Images

![24350, Surface Insensitive THREADLOCKER Blue 50 ML BTL - Image 1](https://m.media-amazon.com/images/I/6136r0nsqbL.jpg)

## Available Options

This product comes in different **Size, Style** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Perfect application for transmission bolts
*by T***Y on May 1, 2026*

I used this Permatex blue thread locker for my 2006 Lexus ES330. After changing the transmission filter, I cleaned the mating surface, added gasket and screwed the pan into the transmission. I added this blue thread locker to each bolt for a total of 18 bolts and tightened up in zig zag pattern. The bottle was enough for all 18 bolts and had some leftover. I believe with this size, it should be enough for two vehicles. It is not only cheaper than Loctile but also provides same strength. It is versatile for other applications as well. It is easy to use and provide great consistency. Until now, the pan has no problems: no oil leaking, no signs of loosening. Great product.

### ⭐⭐⭐⭐⭐ Permatex - Great Stuff
*by J***C on February 22, 2026*

I bought this to use when I modify my guns. It works quite well. Buy THIS BRAND, not some knock off brand that will leave you frustrated. Don't say I didn't warn you...

### ⭐⭐⭐⭐⭐ Worked for my bicycle's loose crankarm
*by J***U on August 25, 2008*

EDIT (March 2010): It's still holding tight after 1.5 years! ---- Brief summary: It's been working great for over 3 months on my bike. Longer version: The left crankarm on my 20+ year old bicycle was coming loose every month or so. The local bike shop said that there was nothing I could do short of tightening it and that the problem would get worse until I replaced the crankarm (a >$100 fix and lots of fun trying to locate an overpriced unused vintage part on auction sites). I researched the problem online and came across a few mentions of people using Loctite threadlocker to fix the problem. I decided to get the Loctite 243 since it is resistant to grease. Unfortunately, the local shops only carried Loctite 242 (not oil resistant). Amazon carries Loctite 243, but it is through a third party vendor which charges as much as the item costs for shipping. Fortunately, I came across this Permatex threadlocker, which is also grease resistant (#24300) and is offered with free shipping. My impression is that this is the same exact product as the Loctite 243, but rebranded. Over 3 months ago, I removed my crankarm and wiped the gunk off both the male and female threads. I applied Permatex to the male threads and screwed the crankarm back in. I let it sit undisturbed for 2 days to allow the stuff to fully cure. I have been riding my bike almost everyday since then (about 1000 total miles), but the crankarm has not come loose. I'm so impressed by this product that I decided to use it on other screws that would periodically come loose (like on my rear rack). Everything has stayed in place. If you're unfamiliar with these thread locking compounds, be aware that there are several versions of the Permatex and Loctite. The blue stuff is of medium strength; one should be able to break the seal using the force from hand tools. There's a regular and an oil-resistant version of the blue stuff (best to go with the oil-resistant if you have a choice). If you need something stronger, there's a red version. You'll need to heat that stuff with a blow torch to break the seal. A low strength purple version is also available.

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*Product available on Desertcart Austria*
*Store origin: AT*
*Last updated: 2026-09-25*