Thread Mill For Stainless Steel
KZF Stainless Steel Series Thread Mill is purpose-built to overcome the challenges of machining austenitic stainless steels (304, 316, 316L, 17-4PH) and other gummy, work-hardening alloys. Featuring a micro-grain solid carbide substrate, anti-galling flute geometry, and a high-performance nano-multilayer PVD coating (AlTiN / AlCrN), this tool delivers longer tool life, superior surface finish, and zero tap breakage risk—even in deep blind holes and thin-walled parts.
Technical Specifications
Specification | Details |
Tool Type | Solid Carbide Thread Mill – Stainless Steel Series |
Thread Standards | ISO Metric (M), UNC, UNF, UNJC/UNJF, NPT, BSP (custom on request) |
Thread Size Range | Metric: M2 – M30 (or M1.4+ on request); Imperial: #4-40 – 1½" |
Pitch | Coarse / Fine / Custom (0.25–3.0 mm / 48–4 TPI) |
Flutes | 1 (single-point), 3, 4 or 6 flutes (by size & application) |
Cutting Diameter | 1.5 – 28 mm (custom available) |
Shank Diameter | 3 / 4 / 6 / 8 / 10 / 12 / 16 / 20 mm (h6 tolerance) |
Overall Length | 50 / 60 / 75 / 100 / 120 mm (custom on request) |
Helix Angle | 30°–45° (optimized for stainless steel chip flow) |
Coating | AlTiN (std.), AlCrN / TiSiN optional, Uncoated for non-ferrous |
Coolant | External coolant standard; internal coolant channel optional |
Hardness Capacity | Up to HRC 38 (stainless series); also suitable for pre-hardened steels |
Tolerance | Ground to ±0.005 mm |
CNC Compatibility | All major CNC machining centers (Haas, Mazak, DMG, Fanuc, etc.) |
OEM private labeling, custom diameters, necked shanks for deep holes, and special thread forms available.
✦ Recommended Applications
- Food & Beverage / Pharmaceutical Equipmnts – Hygienic stainless fittings, valve bodies, pump housings
- Marine & Shipbuilding – 316/316L stainless hardware, flange connections
- Medical & Dental Instruments – Stainless steel surgical tools, implant fixtures (non-titanium)
- Chemical & Process Industry – Corrosion-resistant piping threads, reactor components
- General Precisiion Machining – Blind-hole threads in thin-walled SUS304/316 parts
- Oil & Gas (Auxiliary) – Stainless steel sensor housings, junction boxes
✦ Suitable Materials
Material Category | Typical Grades |
Austenitic Stainless Steel | SUS 304, 304L, 316, 316L, 321, 347 |
Martensitic / PH Stainless | 410, 420, 17-4 PH (H900/H1150 condition) |
Duplex Stainless Steel | Duplex 2205, Super Duplex (light rsoughing/finish recommended) |
Low Carbon / Alloy Steel | 45#, 4140 (≤ HRC 35) – also performs well |
Cast Iron (limited) | Gray iron, ductile iron – multi-material option |
⚠️ For Titaniaum (Ti-6Al-4V) or Inconel 718, we recommend our dedicated High-Temp Alloy Thread Mill Series.
Ordering Information
When requesting a quote, please specify:
- Thread standard & size (e.g., M8×1.25, ⅜‑16 UNC)
- Material to be machined (304 / 316 / 17-4PH etc.)
- Blind hole or through hole + thread depth
- Machine type & coolant availability (external / through-spindle)
- Quantity & branding requirement (OEM)
