Loksert - 4.00mm Machine Heavy Duty Stainless Steel Solid Insert | 3720-4.00HD
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Loksert - 4.00mm Machine Heavy Duty Stainless Steel Solid Insert | 3720-4.00HD
Loksert 4.00mm MC Heavy Duty Stainless Steel Solid Insert | 3720-4.00HD The Loksert 4.00mm MC Heavy Duty Stainless Steel Solid Insert (3720-4.00HD) is a heavy-duty keylocking insert manufactured from Stainless Steel AISI303 for permanent thread repair and reinforcement.... Read More
Vendor: Loksert
SKU: 3720-4.00HD
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Description  

Loksert 4.00mm MC Heavy Duty Stainless Steel Solid Insert | 3720-4.00HD

The Loksert 4.00mm MC Heavy Duty Stainless Steel Solid Insert (3720-4.00HD) is a heavy-duty keylocking insert manufactured from Stainless Steel AISI303 for permanent thread repair and reinforcement. Designed to restore damaged or worn threads in ferrous, non-ferrous and non-metallic materials, it features pre-assembled dove-tailed locking keys that provide a positive mechanical lock against rotation and exceptional pull-out strength.

► Key Features

  • 4.00mm Metric Coarse Heavy Duty stainless steel solid insert
  • Manufactured from Stainless Steel AISI303
  • One-piece keylocking insert with pre-assembled dove-tailed locking keys
  • Positive mechanical lock helps prevent insert rotation
  • High pull-out strength and reliability
  • Suitable for repairing damaged, worn or stripped threads
  • Compatible with ferrous, non-ferrous and non-metallic materials
  • Pre-positioned keys automatically locate the insert at the correct installation depth
  • Installed using standard drills and taps
  • No tangs to break or remove

► Technical Specifications

  • Product Type: Heavy Duty Keylocking Insert
  • Internal Thread Diameter: M4
  • Pitch: 0.7mm
  • External Thread: M8 x 1.25
  • Installed Length: 8.00mm
  • Material: Stainless Steel AISI303
  • Drill Part Number: 3620-6.9
  • Tap Part Number: 3620-8.00I
  • Brand: Loksert
  • Part Number: 3720-4.00HD
  • Barcode: 9326518088981

► Why Tradies Grab This

Ideal for restoring damaged threads in machinery, castings and equipment exposed to vibration and heavy wear. The heavy-duty keylocking design provides a permanent repair solution with excellent pull-out resistance and long-term reliability.

► Industrial Shed’s Trade Guarantee – Shop with Confidence

  • We Stand By Our Gear: Professional-grade products built for demanding industrial environments.
  • Loyalty Matters: Trade account benefits for repeat customers.
  • Real Support, No Runaround: Backed by a team that understands workshop and site requirements.
  • Fast Delivery, Every Time: Reliable shipping to keep your operation moving.

► Stock won’t last — get yours now at Industrial Shed!

Shipping  

At Industrial Shed, we know you need your gear fast and without the runaround. Here’s what makes our shipping better:

Local Delivery, Done In-House: If you're on the Mornington Peninsula, we handle delivery ourselves—no middlemen, no delays. Get your tools the same day or next day, straight from our team to your door.

Nationwide Reach, Reliable Partners: Need it shipped across Australia? We work with top couriers to offer standard and express options, so you get your order when you need it.

Track Every Step: You’ll get a tracking number the moment your order ships. No guessing—just a clear view of where your delivery’s at.

Service with a Real Human Touch: Got special delivery needs? Give us a shout. We’re here to make it happen, no fuss.

With Industrial Shed, you're not just another package in the mail. We get your order to you fast, safe, and with the reliability you expect.

For more information, visit Shipping Details: The Essentials.

Returns  

At Industrial Shed, we keep things simple. If something’s not right or you’re not satisfied, we’ll sort it out—fast and easy.

What Sets Us Apart?

Fast Turnaround: We don’t mess around. When you need to return an item, we process it quickly so you’re not left waiting. Our goal is to get your refund or exchange sorted fast so you can get back to work.

Local Touch: For customers on the Mornington Peninsula, we offer the added benefit of in-store returns for quicker resolution. No shipping hassles—just bring it back to us, and we’ll handle the rest.

No-Nonsense Support: We make returns and refunds straightforward. If there’s a problem, you won’t be stuck in endless back-and-forths. We’re hands-on and get it sorted with minimal hassle.

Clear Policies, No Surprises: We believe in being upfront. Our return and refund policy is clear, so you know exactly what’s covered—whether it’s warranty claims, special orders, or regular returns. You’ll never be left guessing.

Built for Tradies: We understand the demands of the job, so we’re all about making returns and refunds simple, quick, and no fuss—because downtime is the last thing you need.

For more information, visit Returns & Refunds: Straight Talk.

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