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.

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Loctite 38656 277 Red Large Threads Threadlocker Bottle, 36-milliliter

Loctite 38656 277 Red Large Threads Threadlocker Bottle, 36-milliliter

Product ID: 399772691

Details

Brand
Loctite
Specific Uses For Product
Fleet and
Material
Acrylic
Item Form
Liquid
Special Feature
Strong

🔩For large threads ≥ 25mm

⏱️Sets in 1 hour, full cure 24h

🛠️Works on all metals, high oil tolerance

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Description

🔧 Secure your toughest builds with Loctite Red 277 — where strength meets speed!

FAST ACTING ADHESIVE POWER - Begins setting in just 1 hour to keep your projects moving swiftly.
SHOCK VIBRATION RESISTANT - Designed to endure extreme automotive conditions without loosening.
UNIVERSAL METAL COMPATIBILITY - Seamlessly bonds stainless steel, aluminum, and plated surfaces—even oily ones.
PROFESSIONAL GRADE OEM SPECIFIED - Trusted by auto manufacturers and pros for fleet and plant maintenance.
ENGINEERED FOR HEAVY DUTY RELIABILITY - Locks large bolts and studs (≥1 inch) with industrial-grade strength.

Loctite 38656 277 Red Threadlocker is a high-viscosity, professional-grade adhesive designed for large threads (≥25mm). It sets quickly within 1 hour and fully cures in 24 hours, providing durable, vibration-resistant bonds on all metals including stainless steel and aluminum. Ideal for automotive and industrial applications, it withstands heavy shock, chemicals, and oil exposure, making it the go-to choice for securing large bolts and studs in demanding environments.

Specifications

ASIN	B0002KKTTK
Brand	Loctite
Brand Name	Loctite
Colour	Red
Compatible Material	Metal
Container Type	Bottle
Country of Publication	USA
Customer Reviews	4.7 out of 5 stars 106 Reviews
Full Cure Time	24 Hours
Global Trade Identification Number	00079340386563
Item Form	Liquid
Item Package Quantity	1
Item Weight	0.15 Pounds
Manufacturer	Loctite
Manufacturer Part Number	555353
Material	Acrylic
Material Type	Acrylic
Model	38656
Number of Pieces	1
Other Special Features of the Product	Not_Performance_Used
Special Feature	Not_Performance_Used
Specific Uses For Product	Fleet and plant maintenance.
UPC	079340386563
Unit Count	1.22 Fluid Ounces
Viscosity Level	High
Volume	36 Millilitres
Water Resistance Level	Not Water Resistant

Reviews

W**E

7.12.2025

A**N

25.05.2025

D**R

22.11.2024

B**1

20.06.2025

M**6

17.12.2024

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Bs.1038

Duties & taxes included

In stock

Sold byAmazon BoliviaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Bolivia.

Secure transaction

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