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Z-71 Threadlocking Compound - Red - Permanent

Z-71 Threadlocking Compound - Red - Permanent

Brand: Zap

Part No: 5525738-1

3.58 RRP €3.77

In Stock: Usually ships same day

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Zap Z-71 Threadlocking Compound - Red - Permanent (part no. 5525738-1) is a high-strength thread locker designed to secure metal fasteners exposed to vibration. Ideal for set screws, axle and drive nuts, and engine mounting screws on R/C cars, planes, helicopters and boats. It’s equally useful across household, automotive and garden tools where fixings need to stay put.

This permanent red formula holds in extreme conditions and resists common contaminants, helping to lock and seal metal nuts, bolts and studs for long-term reliability.

Key Features

  • Holds from -65 degrees F to 300 degrees F
  • Permanent strength, locks and seals metal nuts, bolts and studs
  • Resistant to petrol and oil etc
  • Works best on: Metal, Aluminium

Tech Specs

  • Weight: 5.67g / 0.2oz
  • Shipping Weight: 0.02kg / 0.05lbs
  • Colour: Red
  • Material: Thread Locker

Z-71 Thread Locker (Red)

High-Strength Permanent Vibration Protection

Z-71 Thread Locker is a high-strength "Red" anaerobic adhesive designed for heavy-duty applications where a permanent bond is required. It is engineered to lock metal-to-metal threads securely, ensuring that critical fasteners remain in place even under the most extreme conditions of vibration, heat, and mechanical stress. Once cured, it creates a bond that resists loosening even in high-torque environments.

Why Engineers & High-Performance Hobbyists Choose Z-71:
  • Permanent Hold: Formulated for fasteners that are not intended for frequent disassembly.
  • Maximum Vibration Resistance: The ultimate choice for engine mounts, drivetrain components, and structural metal frames.
  • Broad Application: Ideal for RC aeroplanes, helicopters, cars, and boats, as well as automotive, industrial, and garden machinery.
Targeted Applications Heavy-Duty RC & Motorsports

Z-71 is the go-to for high-stress areas like petrol engine firewalls, motor mounts in large-scale RC cars, and main rotor shafts in high-performance helicopters. It provides peace of mind for any metal fastener that must never vibrate loose during operation.

Workshop & Outdoor Equipment

From heavy-duty lawnmower blades to automotive suspension components and snowmobile assemblies, Z-71 helps maintain the total integrity of equipment subjected to relentless pounding and environmental exposure.

Pro-Tips for a Permanent Seal
  • Precision Control: Use only a small amount; a single drop on the threads is sufficient for most fasteners. For ultra-fine threads, use Zap Flexi-Tips or Z-Ends to avoid excess mess.
  • Clean Bonding: Ensure all threads are degreased and dry before application to ensure the anaerobic reaction reaches maximum strength.
  • Disassembly Requirements: Unlike the Blue Z-42, Z-71 is a permanent locker. To remove a fastener, you must apply localised heat (approximately 250°C) using a soldering iron or small torch to soften the adhesive before unscrewing.
Technical Specifications Feature Detail
Type High Strength (Red) Anaerobic
Compatibility Metal-to-Metal fasteners only
Removability Permanent (Requires heat for removal)
Best For Engine firewalls, drivetrain studs, and high-vibration structural bolts

Z-71 Threadlocking Compound - Red - Permanent Key Features:

  • Premium grade
  • Formulated for metal to metal
  • Disassembles with heat
  • Prevents loosening due to vibration
  • Resistant to petrol and oil etc

Z-71 Threadlocking Compound - Red - Permanent Tech Specs:

  • Weight: 22g / 0.2oz
  • Shipping Weight: 0.02kg / 0.05lbs
  • Application: Array
  • Works On: Metal - Most Metals_ _
  • Age Recommendation: 14+
  • Colour: Red
  • Material: Thread Lock


    Key Info:
    • Brand: Zap
    • Part No: 5525738-1
    • Barcode: 087093001381
    • Adhesive Type: Threadlock
    Standard Shipping

    £3.95 to most of the UK

    Express Shipping

    £6.95 to most of the UK

    Worldwide Shipping

    Available at checkout

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    Questions & Answers
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    Would this threadlock be good for the exhaust on my 1/5 Baja engine ?
    James / 17th March 2023

    Yes that will be much better than blue threadlock.

    Steve @ Wheelspin Models
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