# CNMM 643 (CNMM 190612) Turning Insert, NR2 Chipbreaker, T8430 Grade | Pramet 7977338 - MROSupply.com

***Pramet CNMM 643-NR2:T8430 negative turning insert — CNMM 643 (ISO CNMM 190612E), NR2 heavy roughing chipbreaker, T8430 PVD grade, 3/4 in (19.05 mm) IC, 1/4 in (6.35 mm) thick, 1.2 mm corner radius. Article 7977338.***



## Product details:

- Catalog number: 7977338
- SKU: 6055737
- Price: ***$23.47*** Each
- Quantity: This product has a minimum order quantity of 10.
This is the minimum order quantity available when purchasing this product.
- Shipping: ***FREE SHIPPING***  ON ORDERS OVER $100
- Typically Ships in: 1 day
- Brand: [Pramet](https://www.mrosupply.com/brands/pramet/)
- Category: 
    - [OD Turning](htts://www.mrosupply.com/cutting-tools/inserts/turning-inserts/od-turning/)
    - [Turning Inserts](htts://www.mrosupply.com/cutting-tools/inserts/turning-inserts/)
    - [Inserts](htts://www.mrosupply.com/cutting-tools/inserts/)
    - [Cutting Tools](htts://www.mrosupply.com/cutting-tools/)
- Unit of measure: each
- Returns: Yes


## Product images:
- https://static.mrosupply.com/images/noimage.webp


## Product attributes;

  
- Chipbreaker: NR2
  

  
- Coating: T8430
  

  
- Coating process: PVD
  

  
- Coating property (CTP): 1
  

  
- Corner radius - inch (RE): 0.047
  

  
- Corner radius - millimeter (RE): 1.2
  

  
- Cutting edge length - inch (L): 0.76
  

  
- Cutting edge length - millimeter (L): 19.3
  

  
- Fixing hole diameter - inch (D1): 0.313
  

  
- Fixing hole diameter - millimeter (D1): 7.94
  

  
- Inscribed circle diameter - inch (IC): 0.75
  

  
- Inscribed circle diameter - millimeter (IC): 19.05
  

  
- Insert thickness - millimeter (S): 6.35