Mill-Thread Insert – NPT 8 TPI, External & Internal
The 30-8 NPT MT7 Mill-Thread Insert is engineered for precision threading of National Pipe Taper (NPT) profiles on CNC milling machines using helical interpolation. Suitable for both external and internal conical threading, this insert produces accurate 8 TPI threads ideal for high-pressure fluid and gas sealing systems. With a 16 mm height and 5.5 mm thickness, this size 30 insert ensures excellent stability and thread integrity in heavy-duty operations. Made from Carmex’s advanced MT7 carbide grade, it delivers enhanced wear resistance, thermal stability, and long-lasting performance across both short and long production runs.
Designed to cut tapered pipe threads in a single tool pass, the insert helps reduce machine downtime while improving productivity. It is fully compatible with Carmex’s comprehensive range of SR series toolholders offered in single, twin, and multi-insert configurations with options for internal coolant and carbide shanks. These holders provide reliable clamping and machining accuracy, making them the perfect match for high-precision pipe threading applications.
Carmex Precision Tools Ltd. is a trusted name in high-precision cutting tools, specializing in threading solutions for turning and milling applications. Their portfolio includes Thread Turning inserts and holders, Mill-Thread inserts and toolholders, Spiral Mill-Thread, and Solid Carbide threadmills designed to meet the demands of modern industry with reliability and accuracy.
Shipping within Australia is free. Please note delivery times to remote and very remote (Zone 3 and 4 postcodes) destinations around Australia will have longer delivery times due to postal processing and the distance to destination. Our handling time will remain as next day dispatch on all orders placed before 8am, ensuring you receive your item as quickly as possible.
AU Post is used for all shipping unless very large items require a courier. Tracking will be provided on all purchases.
Our policy lasts 30 days. If 30 days have gone by since your purchase, unfortunately we can’t offer you a refund or exchange.
To be eligible for a return, your item must be unused and in the same condition that you received it. It must also be in the original packaging.
Several types of goods are exempt from being returned. Perishable goods such as food, flowers, newspapers or magazines cannot be returned. We also do not accept products that are intimate or sanitary goods, hazardous materials, or flammable liquids or gases.
Gift cards
Downloadable software products
Some health and personal care items
To complete your return, we require a receipt or proof of purchase.
Please do not send your purchase back to the manufacturer. Any item not in its original condition, is damaged or missing parts for reasons not due to our error
Any item that is returned more than 30 days after delivery
Once your return is received and inspected, we will send you an email to notify you that we have received your returned item. We will also notify you of the approval or rejection of your refund.
If you are approved, then your refund will be processed, and a credit will automatically be applied to your credit card or original method of payment, within a certain amount of days.
If you haven’t received a refund yet, first check your bank account again. Then contact your credit card company, it may take some time before your refund is officially posted. Next contact your bank. There is often some processing time before a refund is posted. If you’ve done all of this and you still have not received your refund yet, please contact us at mailto:accounts@twineagleimports.com.au.
Only regular priced items may be refunded, unfortunately sale items cannot be refunded.
We only replace items if they are defective or damaged. If you need to exchange it for the same item, send us an email at mailto:accounts@twineagleimports.com.au and send your item to: Twin Eagle Imports PTY LTD, 198 spinebill dr, greenbank QLD 4124, Australia.
If the item was marked as a gift when purchased and shipped directly to you, you’ll receive a gift credit for the value of your return. Once the returned item is received, a gift certificate will be mailed to you.
If the item wasn’t marked as a gift when purchased, or the gift giver had the order shipped to themselves to give to you later, we will send a refund to the gift giver and he will find out about your return.
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