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Description
Technical data of insert for metric external threads 1,25 mm
| Technical data | |
|---|---|
| Side length L | 16 mm |
| Thread profile | 60 degrees |
| Insert type | Metric External Right / Internal Left Thread |
| Thread pitch range P | 1.25 mm |
| Example application | M8, M10x1.25, M12x1.25, M14x1.25, M16x1.25 |
| Thread profile | solid ISO |
| Carbide grade MTA | Suitable for carbon steel, alloy steel, cast iron, stainless steel, cast steel, cast iron and non-ferrous metals |
External insert for M8 and fine threads ISO profile 1.25 mm
The 16 ER 1.25 ISO MTA thread insert is a tool with a complete metric profile for turning threads with a pitch of 1.25 mm on a lathe. The insert for right-handed metric external threads with a complete profile according to the ISO standard performs M8 threads, as well as M10x1.25, M12x1.25, M14x1.25 fine-coil designs and any other with the same pitch. The tool shapes a complete 60-degree profile including coil tips and outside diameter alignment in a single operation without the need for additional finishing. The ISO full-profile insert eliminates the need for chamfering of vertices and deburring, which significantly increases productivity in mass production of threaded parts.
Key benefits of the 16 ER 1.25 mm ISO MTA insert
- Complete profile for 1.25 mm pitch - shapes finished M8, M10x1.25, M12x1.25, M14x1.25 threads with full outline and finished vertices without additional operations
- Cutting along with diameter alignment - dedicated insert cuts 60-degree thread sides, forms coil tips and aligns nominal diameter at the same time
- Series 16 provides versatility - design allows threading of various diameters from 8 to 14 mm with the same pitch while maintaining rigidity
- Interchangeable toolholders - use in right-hand external 16 ER and left-hand internal 16 IR toolholders after changing the type of turning knife
- ISO standard for interchangeability - full profile design ensures compatibility with 6H tolerance nuts and dimensional repeatability in mass production
Tool used in manufacturing plants and machine shops making M8 standard and fine threads with a pitch of 1.25 mm. It works well in the production of fasteners, machine parts and overhauls where high thread quality is required. The insert is appreciated for its reduced machining time due to the elimination of tip finishing operations. Ideal for production runs where repeatability and efficiency of the threading process on a CNC or conventional lathe is important.
Cutting parameters for right-hand external insert 16 ER pitch 1.25 mm Horn
| ISO Symbol | Material | Cutting speed Vc [m/min] |
|---|---|---|
| P | Steel | 50-180 |
| M | Stainless steel | 50-90 |
| K | Cast iron | 65-120 |
| N | Aluminum and non-ferrous materials | 90-180 |
Number of recommended passes depending on thread pitch
| Pitch mm [TPI zwoje] | 1,25 |
|---|---|
| Number of passes | 6-10 |
Frequently asked questions
1. What toolholders are compatible with the 16 ER 1.25 ISO MTA insert?
This tool is installed in right-hand external cutters with a 16 ER standard socket. In addition, the identical insert works with internal left-hand boring tools that have a 16 IR socket, allowing both external shaft surfaces and internal holes to be threaded with the same 1.25 mm pitch cutting tool.
2. Which thread designs does the 1.25 ISO insert support?
The insert is dedicated to M8 standard threads with a pitch of 1.25 mm, as well as reduced pitch threads like M10x1.25, M12x1.25, M14x1.25 and all other metric threads with this pitch parameter. A complete profile in accordance with the ISO standard creates a finished thread with shaped tips and an aligned outside diameter that meets the requirements of international standards.
3. How to calculate the profile height for a 1.25 mm thread?
H1 - Height of the thread outline given in [mm] || P - pitch of the thread given in [mm]
H1 [mm] = 0.6134 × P
For a thread with a pitch of 1.25 mm: H1 = 0.6134 × 1.25 = 0.77 mm
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All orders are delivered by courier company GLS. For orders exceeding 369 PLN gross shipping is FREE
| Courier GLS | Przelew24 / Prepayment | 14,76 zł gross | Delivery time 1 working day |
| Courier GLS | Cash on delivery | 17,26 zł gross | Lead time 1 working day |
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