tt321 tt-321 gold triangle insert tt322

TT-321 & TT-322 Carbide Inserts [TiN & C5 Coated] - Suit Our Lathe Tools

Calculated at Checkout
Size Chart

Need some advice? Speak to one of us from LPR ! M - F 9am - 4pm

 Carbide Inserts For Cutting Steel - TT-321 & TT-322

Titanium Coatedtt-322 tt321 titanium coated carbide inserts


I.C.: 3/8"
Radius: .015"
Thickness: 1/8"
Hole Diameter: .15"


I.C.: 3/8"
Radius: .032"
Thickness: 1/8"
Hole Diameter: .15"

Standard C5 Coatcarbide insert triangle for tool holders


I.C.: 3/8"
Radius: .015"
Thickness: 1/8"
Hole Diameter: .15"


I.C.: 3/8"
Radius: .032"
Thickness: 1/8"
Hole Diameter: .15"

  • Manufactured in America by Lincoln Precision Carbide.
  • Our inserts will also suit many other Insert Cutters.
  • These carbide inserts are designed specifically for our double ended lathe tool holders

These inserts are priced as per each. (Click on the Grey or Gold boxes to show each type we stock) 

Click here to shop our range of Double Ended Tool Holders. 


  • Our inserts have 3 cutting edges.
  • Insert measures from point to point about 15.70mm.
  • Hole size: 3.65mm there 3.25mm thick.
  • Pitch circle diameter: 3/8".
  • Positive rake insert (One cutting side only)

There are 4 Options available next to the image:

  • TT321 Grey (Standard Coat of insert with sharper edges)
  • TT321 Titanium (Hardened Coat with sharper edges)
  • TT322 Grey (Standard Coat of insert with larger radius edges for finishing off)
  • TT322 Titanium (Hardened Coat of insert with larger radius edges for finishing off)


These are not Chinese rubbish. There a high quality Inserts made in the USA

  •          Spare Screws for holders are available for $3.50 per screw.


Returns Policy
You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).

You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).

If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.

Toll & International Shipping

Shipping & TOLL OVERNIGHT conditions

Our customers have the flexibility to choose the postal service for their order. However please note that some toll deliveries can take longer than 1 business day (overnight) which is out of our control. This can be due to your driver / location of delivery.

Our most recommended option is the Toll Overnight Service (Excludes remote areas and all of NT)

Our Toll parcels are collected and shipped out every Monday, Wednesday & Friday.

Please note that this means if you place an order on Tuesday or Thursday, your item won't be shipped out until the respected following Toll post day.

PO Boxes are not accepted by Toll.

Customers wishing to ship to a PO box will have to use Australia Post or provide an accepted address.

A contact phone number must be provided to use Toll.

It is recommended if you live in an isolated area you choose Australia Post to guarantee no delays with delivery.

Most orders are packaged and sent out within 1-2 business days. If there are any troubles with your order you will receive an email or phone call ASAP to resolve or let you know the situation.


We use Toll Global Priority as our shipping service. This means you must supply a contact number before we send your order.

If no phone number is provided, we cannot ship your order and you will be refunded.

Free shipping is only exclusive to our Australian Customers, items that have free shipping offers will not be shipped out. So please be aware of this. We are however sourcing out cheaper international shipping rates which we can then incorporate better deals for our international customers as we value your business extremely highly important to us. 



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