Mill-Thread Insert – NPT 11.5 TPI, External & Internal
The 40-11.5 NPT MT7 Mill-Thread Insert is designed for machining National Pipe Taper (NPT) threads using helical interpolation on CNC milling machines. Suitable for both external and internal conical pipe threads, this robust insert is ideal for larger-diameter components used in gas and fluid-tight sealing systems. With a 20 mm height and 6.3 mm thickness, the size 40 insert delivers excellent cutting stability, strength, and accuracy in demanding applications. Manufactured from Carmex’s high-performance MT7 carbide grade, it ensures outstanding wear resistance, thermal endurance, and reliable thread quality across extended production runs.
The insert is fully compatible with SR series toolholders, available in single, twin, and multi-insert configurations with internal coolant and carbide shank options. These holders enhance rigidity, improve repeatability, and optimize chip evacuation making them ideal for tight-tolerance threading applications where reliability and consistency are critical.
Carmex Precision Tools Ltd. is a leading manufacturer of high-quality cutting tools. Carmex specializes in threading solutions for turning and milling, offering Thread Turning inserts, Mill-Thread systems, Spiral Mill-Thread, and Solid Carbide threadmills engineered to meet the demands of precision CNC machining.
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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