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Loctite 37643 Blue Medium Strength Threadlocker Stick - 9 g

Loctite 37643 Blue Medium Strength Threadlocker Stick - 9 g

Q: Does the stick ever dry out? What is the longest you have had it open and it still works as expected for you?

Loctite Rep said the "stick" shelf life from date of manufacture is 4 years. Rep said Manufacture date is 2nd and 3rd series of numbers/ letters in the batch number. Example Batch Number example L3 7 B AC569. Number 7 will indicate last number of the year No clarification was given if 2017 would be 7 or 17. And and letter B will indicate month, B = February.

Q: INeed to remove the bolt, can you do it with tools? Liquid says yes, reviewers say stick is permanent. Can't be permanent for my purpose .

loctite says: Threadlocker Blue 242® is great for Securing nuts and bolts from accidental loosening. Removes with hand tools.I say: It depends. Size of the locking area, strength and condition of the fastener. Now on a typical 5/16'' nut and bolt is a very small locking area so Blue is totally removeable as long as it's clean with no rust or burrs. Got dirt, rust, wire brush em unless their too far gone. Chase the threads on burrs. If you don't and it's a cheap grade fastener... It's gonna break and may ruin your day. Remember, this stuff turns into a crystalline structure under pressure. Sticks to everything including dirt and rust. So the impregnated rust, dirt and burrs are bigger now which causes binding upon removal. The LOCTITE 290 Wicking Grade Green is kool stuff. Apply after assembly and doesn't take much. Almost as strong as Blue, easy removal qualities and costs more. So don't spill it. Threadlocker Red 271 is for grade 8 fasteners or better. Hope this helped.

Q: Has anyone used this with macbook screws? i'm hoping it provides similar holding power to oem screws, mine have been wiggling out a lot over time.

Yes. I use this on all of my computer screws, including an older MacBook. I'm not aware of anything special about MacBook screws, or oem screws, that would make them less suitable. This is a mechanical bond, so the more threads that engage, and the finer the gap of the engagement, the better it works.

Q: Is there a max temperature for storage? Basically will it melt in my Florida garage?

Optimal storage is 8 °C to 21 °C. Storage below 8 °C or greater than 28 °C can adversely affect product properties. Here is the TDS: http://tds.henkel.com/tds5/Studio/ShowPDF?pid=248&format=MTR&subformat=REAC&language=EN&plant=WERCS

Product ID: 1998122

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Details

Brand
Loctite
Specific Uses For Product
Repair
Material
Aluminum Steel
Item Form
Stick
Special Feature
Strong

🔧Medium strength lock

🕒Fast 10-min initial cure

🛠️Versatile 6-19mm bolts

Description

🔩 Lock it down with confidence — the stick that means business!

FAST CURING FORMULA - Achieves handling strength in 10 minutes, full cure in 24 hours for quick project turnaround.
VERSATILE BOLT RANGE - Ideal for nuts and bolts from 6mm to 19mm, covering a wide range of automotive and maintenance needs.
BROAD METAL COMPATIBILITY - Works seamlessly on stainless steel, aluminum, and oil-contaminated surfaces.
WAX LIKE STICK APPLICATOR - Mess-free, drip-proof application for precision even in overhead or tight spots.
RELIABLE MEDIUM STRENGTH LOCK - Locks and seals metal threads with confidence, perfect for critical repairs.

Loctite 37643 Blue Medium Strength Threadlocker Stick is a 9g wax-like adhesive designed for medium-strength thread locking on metals including stainless steel and aluminum. It offers fast curing (10 minutes initial, 24 hours full), drip-proof application, and works on bolts sized 6mm to 19mm, making it ideal for automotive repairs and maintenance in challenging conditions.

Specifications

Brand	Loctite
Specific Uses For Product	Repair
Material	Aluminum,Stainless Steel
Item Form	Stick
Special Feature	Strong
Color	Blue
Item Package Quantity	1
Package Information	Tube
Item Volume	9 Cubic Centimeters
Viscosity	[AI] Medium
Full Cure Time	24 Hours
Water Resistance Level	Not Water Resistant
Unit Count	1.0 Count
UPC	079340376434
Global Trade Identification Number	00079340376434
Manufacturer	Loctite
Item Weight	0.96 ounces
Product Dimensions	3.5 x 0.75 x 0.75 inches
Item model number	37643
Is Discontinued By Manufacturer	No
Manufacturer Part Number	506166
OEM Part Number	37643
Special Features	Strong

Have a Question? See What Others Asked

Does the stick ever dry out? What is the longest you have had it open and it still works as expected for you?

INeed to remove the bolt, can you do it with tools? Liquid says yes, reviewers say stick is permanent. Can't be permanent for my purpose .

Has anyone used this with macbook screws? i'm hoping it provides similar holding power to oem screws, mine have been wiggling out a lot over time.

Is there a max temperature for storage? Basically will it melt in my Florida garage?

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Fast shipping and excellent packaging. The Leatherman tool feels very premium and sturdy.

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The product exactly matches the description. Very satisfied with my purchase.

5 days ago

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