Henkel Loctite 22221 222MS Low Strength Threadlocker
Henkel Loctite 222MS Low Strength Threadlocker, 10 mL
Loctite 222MS is a low strength, small screw, mil-spec purple threadlocker ideal for fastener diameters of 1/4" (6mm) and smaller. A one-component acrylic adhesive designed for locking and sealing threaded fasteners that require easy disassembly with standard hand tools. Its controlled lubricity allows for accurate clamp loads, and it is suitable for use on low-strength metals such as aluminum and brass.
Key Specifications
| Specification | Value |
|---|---|
| Part Number | 22221 (Loctite 222MS) |
| Strength | Low strength |
| Color | Purple |
| Volume | 10 mL bottle |
| Fastener Size | 1/4" (6mm) and smaller |
| Mil-Spec | MIL-S-46163A Type II Grade M |
| NSF Certification | NSF P1 Certified |
| Removal | Hand tools |
| Chemistry | One-component acrylic |
Key Features
- Low strength formula — ideal for small screws and fasteners requiring easy disassembly with standard hand tools
- Mil-Spec qualified — complies with MIL-S-46163A Type II Grade M
- NSF P1 Certified — suitable for incidental food contact applications
- Controlled lubricity — allows for accurate clamp loads during assembly
- Compatible with low-strength metals — suitable for aluminum, brass, and similar substrates
- Locks and seals threads — prevents loosening from vibration while allowing hand tool removal
Ideal Applications
- Adjustment screws and set screws
- Countersunk head screws
- Collars, pulleys, tool holders, and controllers
- Low-strength metal fasteners in aluminum or brass assemblies
- Applications requiring mil-spec threadlocker compliance
Frequently Asked Questions
What is the difference between Loctite 222MS and standard Loctite 222?
Loctite 222MS is the mil-spec version of Loctite 222, qualified to MIL-S-46163A Type II Grade M. It is formulated for small screws (1/4" and smaller) and is NSF P1 certified, making it suitable for food processing equipment applications in addition to standard industrial use.
Can Loctite 222MS be removed with hand tools?
Yes — 222MS is a low strength threadlocker specifically designed for easy disassembly using standard hand tools. No heat or special equipment is required for removal.
Is Loctite 222MS suitable for aluminum and brass fasteners?
Yes — 222MS is compatible with low-strength metals including aluminum and brass, making it a good choice for applications where standard medium or high strength threadlockers could damage the substrate.
What fastener sizes is Loctite 222MS designed for?
Loctite 222MS is designed for fastener diameters of 1/4" (6mm) and smaller. For larger fasteners, consider a medium strength threadlocker such as Loctite 243.
