Description
The SECO 00049818 is a laydown-style indexable threading insert designed for external UN thread forms at 13 threads per inch (TPI). Built from solid carbide in the CP500 grade and finished with a PVD-applied TiAlN/TiN coating, this insert delivers consistent thread geometry and extended tool life across a wide range of workpiece materials. The 60-degree included angle matches standard UN and ISO thread profiles. With a 3/8 inch inscribed circle (IC) and a thickness of 0.1366 inches, it seats securely in compatible 16ER toolholders. It is designed for right-hand cutting and suits CNC lathes and turning centers running external threading operations.
This insert is used in external threading applications on CNC turning equipment in both production shop and job shop environments. The CP500 carbide grade and universal workpiece material classification (ISO material codes K, M, N, P, S) make it suitable for steel, stainless steel, cast iron, nonferrous metals, and heat-resistant alloys. It fits the Snap-Tap series toolholder system and is appropriate for machinists and CNC operators threading to UN and ISO thread standards. Minimum order quantity is 2 inserts; inserts are sold individually per package quantity of 1.
Key Features
- CP500 solid carbide grade with PVD TiAlN/TiN coating for wear resistance and thermal stability
- 13 TPI external UN thread form with 60-degree included angle for standard UN and ISO profiles
- Right-hand cut orientation; compatible with 16ER Snap-Tap series toolholders
- 3/8 inch inscribed circle for positive seating and repeatable indexing
- Universal workpiece material rating covers ISO codes K, M, N, P, S
- Laydown insert style for stable clamping and consistent thread depth control
Compatibility
Designed for use with 16ER-style Snap-Tap series threading toolholders; suitable for external UN threading operations conforming to ISO thread standards.
Installation Notes
Threading inserts of this type are installed and indexed by qualified CNC machinists or toolroom technicians. Power down and lock out the machine spindle before changing or indexing inserts. Use the correct torque wrench and insert screw specified by the toolholder manufacturer to avoid cracking the carbide. Inspect the toolholder pocket for chips or debris before seating the insert to maintain accurate thread geometry.
Technical Specifications
- Insert Style: 16ER
- Insert Material: Solid Carbide
- Manufacturer Grade: CP500
- Coating: TiAlN/TiN (PVD)
- Thread Type: External
- Thread Standard: UN / ISO
- Threads Per Inch: 13 TPI
- Insert Hand: Right Hand
- Included Angle: 60 degrees
- Inscribed Circle: 3/8 inches
- Thickness: 0.1366 inches
- Corner Radius: 0.0090 inches
- Cutting Edge to Theoretical Edge Length: 0.0470 inches
- Face of Insert to Tip Centerline: 0.0590 inches
- Primary Workpiece Material Codes: K, M, N, P, S
- Series: Snap-Tap
- UNSPSC Code: 23291804
- Package Quantity: 1
- Minimum Order Quantity: 2
- Weight: 0.12 pounds
Standard Information
- Brand: SECO
- Manufacturer Part Number: 00049818
