For sale is a Widia CNGA432 PCD tipped carbide Insert. The insert measures to about .500 x .500 x .188". It has a through hole of about .202" and a nose radii of about .031". It is new, but old stock, and may be better as it is made in the USA. Thanks for looking.

it looks like MSC has these, but with a newer MFR # on them, as these are older stock

MSC says;

Specifications

Insert Style: CNGA	ANSI Size Code: 432
ISO Size Code: 120408	Insert Shape: C - Diamond (Rhombic) 80-Deg
Included Angle: 80.00	Inscribed Circle (Decimal Inch): 0.5000
Inscribed Circle (Inch): 1/2	Corner Radius (Inch): 1/32
Corner Radius (Decimal Inch): 0.0312	Insert Material: PCD
Manufacturer Grade: WDN00U	Coating/Finish: Bright/Uncoated
Relief Angle: 0.000	Wiper Edge: No
Insert Thickness (Inch): 3/16	Insert Thickness (Decimal Inch): 0.1875
Insert Hand: Neutral	Series: CNGA-FST
Grade Characteristics: Special, Super Alloys (S) - High Wear-Resistance; Aluminum & Non-Ferrous (N) - High Wear-Resistance	Side Clearance: Negative
Number Of Cutting Edges: 1	Hole Diameter (Decimal Inch): 0.2030
Maximum Depth of Cut (Decimal Inch): 0.5077	ANSI Insert Code: CNGA432
ISO Insert Code: CNGA120408	Insert Holding Method: Pin; Clamp
Width (Inch): 1/2	Clearance Code: N
Tolerance Code: G	Coating Process: Uncoated
Rake: Negative	Insert Length (Decimal Inch): 0.5077

Turning Insert: CNGA432FST, PCD

WDN00U, Bright/No Finish, Neutral, 0.5077" Long, 0.5000" Inscribed Circle, 0.0312" Corner Radius, 80.00 deg C - Diamond (Rhombic) 80-Deg, Series CNGA-FST

MSC# 95268918

Mfr# 5885726 These are 130 each. I'll go about half here, so save a lot of money!