Carmex Internal/External Whitworth Threadmill Insert 21mm / 14 TPI / 21 - 14 W MT7

Mill-Thread Insert – Whitworth 14 TPI, Internal/External The Carmex 21–14 W MT7 is a high-precision internal and external thread milling insert engineered for cutting Whitworth 55° thread profiles with a...
£63.00
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£63.00
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Vendor: CARMEX
SKU: 21-14WMT7
Availability: In Stock
Subtotal: £63.00
Carmex Internal/External Whitworth Threadmill Insert 21mm / 14 TPI / 21 - 14 W MT7

Carmex Internal/External Whitworth Threadmill Insert 21mm / 14 TPI / 21 - 14 W MT7

£0.00 £63.00

Carmex Internal/External Whitworth Threadmill Insert 21mm / 14 TPI / 21 - 14 W MT7

£0.00 £63.00

Mill-Thread Insert – Whitworth 14 TPI, Internal/External

The Carmex 21–14 W MT7 is a high-precision internal and external thread milling insert engineered for cutting Whitworth 55° thread profiles with a 14 TPI pitch. Designed for use in CNC milling machines with helical interpolation, this insert provides smooth, accurate threading for pipe and fitting applications that require consistent form and sealing performance.

Crafted from MT7 ultra-fine carbide, the insert offers superior hardness, wear resistance, and thermal stability for extended tool life. Its 21 mm size, 12 mm height, and 4.7 mm thickness ensure rigidity and precision under demanding threading conditions. Suitable for both internal and external operations, it’s a versatile choice for general engineering and industrial pipe thread production.

Key Features & Benefits

  • Ordering Code: 21–14 W MT7
  • Thread Type: Whitworth (55°)
  • Threading: Internal and External
  • Insert Size: 21 mm
  • Pitch: 14 TPI
  • H (Height): 12 mm
  • T (Thickness): 4.7 mm
  • Carbide Grade: MT7
  • Applications: Whitworth pipe and general-purpose threading requiring tight form and sealing accuracy
  • Advantages: High precision | Dual-use (Int./Ext.) | Excellent wear resistance | Smooth thread finish

Carmex Precision Tools Ltd. is a world-leading manufacturer of cutting tools for threading and milling. Their comprehensive product line includes Thread Turning Inserts and Toolholders, Mill-Thread Inserts and Tool Holders, Solid Carbide Threadmills, and Spiral Mill-Thread Systems — all designed to deliver maximum accuracy, consistency, and performance across diverse machining applications.

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Shipping

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.

Returns

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.

Additional non-returnable items

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

Refunds (if applicable)

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.

Late or missing refunds (if applicable)

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.

Sale items (if applicable)

Only regular priced items may be refunded, unfortunately sale items cannot be refunded.

Exchanges (if applicable)

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.

Gifts

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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