If i apply this product on brake bracket-to-steering knuckle bolts will i be able to loosen those bolts just w/huge breaker bar, without heat?

Sorry, I meant to type primer SF 7649 or SF 7471. Loctite 277 is a high strength threadlocker that requires primer SF 7649 or 7411 when it's applied on 2 plated metals, 2 low energy surfaces, or 2 non-active metal surfaces. If one of the parts is active, the primer is not required. After the product cures, applying head and removing while the assembly is still hot, is the best/safest way to disassemble without stripping the threads. You could try removing with a hand tool first, but the resistance is too much, heat the head of the screw to 450F to disassemble.

Desertcart Logo

Deliver to Cayman Islands

For best experience Get the App

DOWNLOAD THE APP

WE SOURCE ITEMS FROM

UAE
UK
India
USA
Japan
KOREA

Customer Services

About Us

Customer Support

Description

🔧 Lock it down like a pro — don’t let your bolts bail on you!

CONTROLLED DISASSEMBLY - Requires heat to weaken bond, giving you secure fastening with the option for future maintenance.
OEM APPROVED RELIABILITY - Trusted by automotive manufacturers and factory assembly lines for consistent, professional-grade performance.
VIBRATION PROOF SECURITY - Prevents loosening from shocks and vibrations—perfect for suspension, wheel studs, and heavy-duty fasteners.
INDUSTRIAL GRADE STRENGTH - Engineered for large bolts and studs 1 inch (25 mm) or larger, ensuring maximum hold where it counts.
MULTI METAL COMPATIBILITY - Works seamlessly on stainless steel, aluminum, and plated surfaces with superior oil tolerance for extreme conditions.

Loctite 38656 277 Red Threadlocker is a high-strength adhesive designed for large automotive bolts and studs (≥1 inch). OEM-specified and trusted on factory lines, it bonds quickly (full cure in 24 hours) and withstands heavy vibration and harsh conditions. Compatible with all metals, it requires heat for disassembly, making it ideal for securing critical vehicle components like suspension mounts and wheel studs.

Specifications

Brand	Loctite
Specific Uses For Product	Fleet and plant maintenance.
Material	Aluminum,Stainless Steel
Compatible Material	All Metals
Item Form	Liquid
Special Feature	Strong
Color	Red
Item Package Quantity	1
Package Information	Bottle
Item Volume	36 Milliliters
Viscosity	7000 centipoise
Full Cure Time	24 Hours
Water Resistance Level	Not Water Resistant
Unit Count	1.22 Fluid Ounces
UPC	079340386563
Global Trade Identification Number	00079340386563
Manufacturer	Loctite
Model	Loctite 555353 Threadlocker 277 High Strength Bottle, Red, 36-ml
Item Weight	2.4 ounces
Product Dimensions	6.25 x 2.25 x 1.1 inches
Item model number	38656
Manufacturer Part Number	555353
OEM Part Number	38656
Special Features	Strong

Common Questions

Are the products genuine and authentic?+

Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

How long does delivery take and is it reliable?+

Delivery times vary by destination country, typically ranging from 3-9 business days. Each order is fully trackable through our system. We handle all customs clearance and use reliable courier partners for last-mile delivery. You'll receive regular updates about your order status via email and our app.

What is Desertcart? Is it safe to order from?+

Desertcart is an international e-commerce platform operating since 2014. We securely process thousands of orders globally each day. Every product goes through our quality verification process before delivery, and we provide end-to-end order tracking, 24/7 customer support, and a comprehensive returns policy to ensure a safe shopping experience.

How is product pricing calculated?+

Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.