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PT71 Z-71 Red Thread Locker .20oz
PT71 Z-71 Red Thread Locker .20oz
PT71 Z-71 Red Thread Locker .20oz
PT71 Z-71 Red Thread Locker .20oz

PT71 Z-71 Red Thread Locker .20oz

Brand: Zap

Part No: 5525738

£18.53 RRP £19.50

Shadow Stock: Usually ships next day

Collect Instore

Zap PT71 Z-71 Red Thread Locker (0.20oz), part number 5525738, is a permanent-strength compound for locking and sealing metal fasteners. Ideal for set screws, axle and drive nuts, and engine mounting screws across R/C cars, planes, helicopters and boats, it also suits bicycles, tools and general machinery where vibration can loosen fixings. Petrol and oil resistant, it operates from -65°F to 300°F to help keep assemblies secure.

Key Features

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

Tech Specs

  • Weight: 5.67g / 0.20oz
  • Colour: Red
  • Material: Thread locker
  • Works on: Most metals
  • Shipping weight: 0.15kg / 0.33lb

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

PT71 Z-71 Red Thread Locker .20oz Key Features:

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

PT71 Z-71 Red Thread Locker .20oz Tech Specs:

  • Weight: 150g / 0.2oz
  • Shipping Weight: 0.15kg / 0.33lbs
  • Application: Array
  • Works On: Metal - Most Metals_ _
  • Age Recommendation: 14+
  • Colour: Red
  • Material: Thread Lock


    Key Info:
    • Brand: Zap
    • Part No: 5525738
    • Barcode: 505112113618
    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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