Carbide
Cutting Tools
50+ years of carbide expertise. From standard turning inserts to fully engineered form tools, we design and manufacture carbide cutting solutions for the exact materials, machines, and applications you run.
Precision CNC ground — Sparta, Michigan
Why Engineers Specify Spec Tool
We manufacture every carbide cutting tool in-house — no outsourcing, no rebranded imports. That means tighter tolerances, faster delivery, and direct access to the engineers who designed your tool.
50+ Years in Carbide
Spec Tool has been grinding and manufacturing carbide cutting tools since 1968. That experience is built into every tool we deliver.
In-House CNC Grinding
Our 36,000 sq ft Michigan facility includes CNC grinders, EDM machines, and precision inspection equipment — all under one roof.
All Standard Grades
C2 through C8 uncoated and PVD/CVD coated grades available. We match the right carbide grade to your material and cutting conditions.
24-Hour Quote Turnaround
Standard products are quoted within 24 hours. Send us your print, drawing, or application details and we'll respond quickly.
Carbide Tool Families
The product families below represent the carbide cutting tools we manufacture. Each is available in standard configurations or fully custom to your print.
Most PopularBoring Bars
Precision carbide boring bars for internal diameter machining. Available in standard and custom profiles for steel, cast iron, and stainless steel applications.
- Shank diameters: 1/16" – 3/4"
- Boring range: As Required
- Grades: Most grades consist of 10% Ultra fine grain carbide
- Coatings: Based on application
Fast QuoteGrooving & Parting Tools
Indexable carbide grooving inserts and holders for OD, ID, and face grooving applications. Custom widths and profiles available.
- Groove widths: 0.020" – 0.500"
- Depth of cut as specified
- Single and double-ended inserts
- Custom profiles available
Threading Inserts
Carbide threading inserts for external and internal thread turning. UN, metric, ACME, and custom thread forms in multiple grades.
- Thread forms: UN/UNF, Metric, ACME, NPT, custom
- Pitch range: 4–80 TPI / 0.25–6 mm
- Full, half, and partial profile options
- PVD and CVD coatings available
Turning Inserts
General-purpose and specialty carbide turning inserts for roughing, semi-finishing, and finishing. Full range of ISO geometries.
- ISO geometries: CNMG, WNMG, TNMG, DNMG, SNMG
- IC sizes: 1/4" – 1-1/4"
- Grades: P, M, K, N, S material groups
- CVD and PVD multilayer coatings available
Milling Inserts
Indexable carbide milling inserts for face milling, shoulder milling, and high-feed applications. Compatible with major cutter platforms.
- Geometries: APKT, SEHT, RDHX, XOMT and more
- IC sizes: 1/2" – 1-1/4"
- Corner radii: 0.015" – 0.125"
- Wear-resistant PVD coatings standard
CustomCustom Form Tools
Fully engineered carbide form tools and profile inserts built to your print. Ideal for Swiss screw machines, multi-spindle equipment, and dedicated OD/ID profiles.
- Any 2D profile geometry
- Tolerances to ±0.0002"
- In-house CNC grinding
- 24–48 hour quote turnaround
A note on pricing ranges
The pricing ranges shown are intended to help with budgeting and expectations — they do not replace a formal quote. A boring bar, for example, may range from $30 to over $90 depending on shank size, coating, and whether it is a standard or custom solution. For accurate pricing, send us your drawing or describe your application. Our team will provide a quote within 24 hours.
Technical Specifications
General capability ranges across our carbide cutting tool product families.
Ready to Discuss Your Application?
Tell us the material you're cutting, the operation you're performing, and your current tooling challenges. Our engineers will recommend the right carbide solution and provide a quote within 24 hours.
Related Product Families
Other cutting tool solutions from Spec Tool
Super AbrasivesCeramic Inserts
High-speed ceramic tooling for hardened steels and cast iron applications up to 68 HRC.
Super AbrasivesPCD & PCBN Tools
Polycrystalline diamond and PCBN solutions. PCD for non-ferrous, non-metallic applications. PCBN for hardened-steel and cast iron.
Round ToolsSpade Drills
Allied-style replaceable spade drill systems for large-diameter deep-hole applications.