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Product Specifications:
| Item | Turning Insert |
| Ansi Code | SPU421 |
| Cast Iron (k) Compatibility | Yes |
| Chip Breaker | No |
| Chip-breaker Code | No |
| Chip-breaker Style | No |
| Clearance Angle | 11° |
| Corner Radius | 1/64" |
| Cutting Application | Turning |
| Cutting Direction | Neutral |
| Cutting Edge Length | 12.7 mm |
| Finish | Bright Uncoated |
| Finish-machining | Bright (Uncoated) |
| For Use With | Toolholders, Boring Bars |
| Hardened (h) Compatibility | Yes |
| Included Angle | 90° |
| Inscribed Circle | 1/2" |
| Insert Application | Finishing |
| Insert Holding Type | No Screw Hole |
| Insert Material | Carbide |
| Insert Style | SPU4 |
| Iso Number | SPUN120304 |
| Manufacturer Grade | Grade THM |
| Material | Carbide |
| Material-machining | Carbide |
| Measurement System | Fractional Inch |
| Mounting Style | Clamp |
| No. Of Cutting Edges | 4 |
| Non Ferrous Compatibility | Yes |
| Primary Material Application | Aluminum, Brass, Bronze, Copper, Magnesium, Nickel, Titanium |
| Primary Material Application Iso Code | N, S |
| Rake | Positive |
| Secondary Material Application | Cast Iron, Stainless Steel |
| Secondary Material Application Iso Code | K, M |
| Shape | Square |
| Stainless Compatibility | No |
| Steel Compatibility | No |
| Super Alloy (s) Compatibility | Yes |
| System Of Measurement | Imperial |
| Thickness | 1/8" |
| Workpiece Compatibility | Hardened, Nonferrous, Super Alloy |
Shipping Info:
| Ship weight (kg) | 0.08 |
| Ship height (cm) | 2.54 |
| Ship length (cm) | 2.54 |
| Ship width (cm) | 2.54 |
| Country of Origin | CN |
Product Variants
| Product | Model | Material | Thickness | Material-machining | Manufacturer Grade | Finish-machining | Primary Material Application Iso Code | Secondary Material Application Iso Code | Cutting Edge Length | Price | |
|---|---|---|---|---|---|---|---|---|---|---|---|
![]() |
SNGA432S0425MT WBH20P | - | 3/16" | CBN | Grade WBH20P | AlTiN | H | - | 0.5" | €329.01 | |
![]() |
SNMA432 | - | 3 | - | - | - | - | - | - | €12.38 | |
![]() |
SNMA433 | - | 3 | - | - | - | - | - | - | €12.43 | |
![]() |
SCMT3251MP | - | - | - | - | - | - | - | - | €15.60 | |
![]() |
SCMT3252MP | - | - | - | - | - | - | - | - | €15.57 | |
![]() |
6868880 | Carbide | 5/32" | Carbide | Grade WU25PT | TiAlN | M, P, S | K, N | 0.375" | €7.56 | |
![]() |
6868882 | Carbide | 3/16" | Carbide | Grade WU25PT | TiAlN | M, P, S | K, N | 0.5" | €11.69 |
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Contact us
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WIDIA SPU421 THM Square Turning Insert, 1/2 Inch Inscribed Circle, Neutral, 1/64 Inch Corner Radius
€18.21 /unit




