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LOCTITE 221 (8.45 fl oz / 250 ml Btl)

ACRYLIC THREADLOCKER (250-ml-Bottle)
AERO P/N: 113302
LOCTITE 221 (8.45 fl oz / 250 ml Btl) LOCTITE 221 (8.45 fl oz / 250 ml Btl)
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Expiry Date: 18/Dec/2027
Estimated Lead Time: 45 days
$356.38 excl VAT
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Max qty per order: 10

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Introducing Loctite 221, an acrylic-based threadlocker designed for critical applications in the aircraft industry. Its robust adhesion and anaerobic cure ensure secure fastener assembly, while its low viscosity allows easy dispensing into threaded components. Ideal for securing small diameter fasteners and adjustments, it enhances safety and durability with easy disassembly.
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Product Features
OEM
Henkel
OEM Part No.
L142444
Colour
-
Shelf Life in Months
24
Shelf Life in Days
720
UN No
-
Class
-
PG
-
ECCN
EAR99
Country of Origin
Ireland
Commodity Code
3907300085
Product Type
Adhesives

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Additional Product Information

Overview

Loctite 221 is an acrylic-based threadlocker used in aircraft assembly and maintenance. Its purple liquid formula with UV fluorescence ensures easy inspection while providing secure fastener locking with simple disassembly when required.

Key Technical Specs for Loctite 221

  • Type: Acrylic threadlocker
  • Form: Purple liquid
  • Viscosity/Consistency: Low viscosity
  • Tensile/Peel Strength: N/A
  • Shore Hardness: N/A
  • Service Temperature: Standard ambient conditions
  • Typical Uses: Threadlocking, vibration resistance
  • Shelf Life: Standard storage stability

Approvals & Specifications

  • Anaerobic cure ensures reliable locking
  • UV-fluorescent for inspection

Typical Aircraft MRO / AOG Applications

  • Set screws and fasteners requiring vibration resistance
  • Small diameter or long engagement fasteners
  • Maintenance applications requiring removable locking

Compatibility & Safety Notes

  • Compatible with standard metal fasteners
  • Wear gloves and avoid skin contact
  • Store away from light and high temperatures

Packaging & Procurement

  • Standard liquid threadlocker bottles
  • Ready-to-use, one-component formula
  • Store in sealed containers at ambient conditions

Why Loctite 221 is Chosen for AOG / MRO

  • Reliable locking under vibration
  • Easy disassembly when maintenance is required
  • UV inspection ensures proper application
  • Simple one-component application reduces errors

Practical Suggestions for Your Team (AOG Mindset)

  • Maintain supply for critical fasteners
  • Use UV light for inspection post-application
  • Ensure staff training for threadlocker use

Manufacture / Aviation Spec Codes

  • Manufacturer: Loctite
  • Product ID: 221
  • MIL/OEM/Export codes: N/A

Alternative Names & Descriptions

  • Loctite 221 Threadlocker
  • Purple Acrylic Threadlocker
  • UV-Visible Loctite 221
Restrictions
Restricted
Dry Ice
No
Precursor Licence
Export Licence
FEDEX Restriction
Supplier Disruption
no

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  • Orders over £100 online are eligible for FREE UK Mainland delivery.
  • Collection for orders is available for all customers. At Checkout, please select 'Ex-Works/Collection'.
  • European Delivery is available for selected countries. Shipping costs will be calculated according to the weight of the products.
  • Refrigerated shipping required for shipments going by sea or exceeding 7 days transit time.
  • For additional information, please see our shipping page.

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