Threading Insert ZCC.CT

About ZCC·CT Threading Inserts

ZCC·CT (ZCC Cutting Tools) threading inserts are precision ground carbide tools for external and internal thread turning on CNC lathes. The line uses a streamlined 4-grade PVD-coated family — YBG201 / YBG202 / YBG203 / YBG205 — focused on universal PVD performance for steel, stainless, and high-temperature alloys. The dominant insert geometry is the RT16.01N family (16 mm IC, right-hand, type 01N profile) — the global industry-standard threading geometry shared across Mitsubishi, Sandvik, Kennametal, Iscar, Tungaloy, and Walter. CNCHome-Beyond is an authorized ZCC·CT distributor; orders placed before 3 PM China time ship same-day from our Hangzhou warehouse with DHL/UPS/FedEx express delivery in 3-7 business days.

ZCC·CT Threading Grade Family (4 PVD Universal)

ZCC·CT Threading Geometry at a Glance

ZCC·CT's threading line uses a single profile type (01N) which is the industry-standard threading geometry compatible with every major threading holder on the market. The "01" prefix indicates the cross-section profile (full V-shape), and the "N" suffix indicates the standard sharp cutting edge (not honed for tough materials). Both RT (right-hand) and LT (left-hand) versions use the same profile and 16mm IC — only the cutting direction differs.

Need to compare with other brand threading geometries? See our complete Insert Grade Cross-Reference Tool and SKU Cross-Reference for direct equivalents between ZCC·CT, Sandvik, Kennametal, Iscar, Walter, Tungaloy, Mitsubishi, Kyocera, and KORLOY.

Threading Standards Coverage (6 Families)

ZCC·CT Chip-Breaker Reference (5 Variants)

ZCC·CT's threading line uses 5 main chip-breaker geometries, distinguished by suffix on the part number:

How to Choose a ZCC·CT Threading Insert

Step 1: Identify the thread standard. ISO metric (M) for European/Asian metric fasteners. UN/UNF for North American inch fasteners. Whitworth (W/BSW) for UK legacy or vintage machinery. NPT for tapered pipe threads (60° North American standard). Partial profile (60° or 55°) for unknown or multi-pitch flexibility.

Step 2: Look up the pitch or TPI. ISO metric pitch is in mm (e.g. M10×1.5 = 1.5 mm pitch). UN TPI is threads per inch (e.g. 1/2"-20 UNF = 20 TPI). Whitworth and NPT are TPI as well. ZCC·CT's RT16 covers most common ISO pitches 1.0-3.0 mm.

Step 3: Choose the hand. RT = Right-hand thread (most common, 80% of applications). LT = Left-hand thread (rare, special applications). ZCC·CT stocks 3 LT16 SKUs (left-hand) vs 59 RT16 SKUs (right-hand).

Step 4: Choose IC size. Use 16mm IC (RT16) for OD > 25 mm or bore > 20 mm. Use 11mm IC (RT11) for bore 13-20 mm only.

Step 5: For unknown pitch, use partial profile. A 60° partial profile insert (GMPB or A60) covers any pitch from 0.5-3.0 mm. A 55° partial profile insert covers Whitworth/BSP pitch 0.5-3.0 mm. Trade-off: full profile is more accurate (matches standard exactly); partial profile is more flexible (one insert for many pitches).

Compatible Threading Tool Holders

ZCC·CT threading inserts fit the following CNCHome-Beyond tool holder families (all ISO 5610 standard, drop-in compatible with ZCC·CT OEM holders):

• External Threading Holders (SER/L type, 16mm IC pocket) — for RT16 external right-hand threading
• External Threading Holders (SEL/L type, 16mm IC pocket) — for LT16 external left-hand threading
• Internal Threading Boring Bars (SNR/L type, 11mm or 16mm IC) — for RT11/RT16 internal threading
• External Grooving & Turning Holders — 342 SKUs, drop-in compatible with ZCC·CT threading

Cross-Brand Equivalents to ZCC·CT Threading

ZCC·CT threading insert geometries are dimensionally interchangeable with other major brands. Direct equivalents:

Looking for a Sandvik or Tungaloy equivalent at lower cost? See Kyocera threading inserts (49 SKUs) or Tungaloy TungThread inserts for direct alternatives. Use our Insert Grade Cross-Reference Tool for grade-to-grade equivalents across 17+ brands.

Featured Bestsellers (16 SKUs across 6 thread standards)

Browse a representative selection from our 100-SKU catalog below, organized by thread standard. All featured inserts are in stock and ship same-day from Hangzhou. Click any part number to view detailed specs, grade composition, and recommended cutting parameters.

ISO Metric Threading — 6 SKUs (Pitch 1.0-2.5 mm)

ISO Metric (M) threads are the international standard per ISO 261. 60° sharp V profile. ZCC·CT's RT16 family covers the most common pitches from 1.0 to 2.5 mm in 0.25 mm increments.

• RT16.01N-1.00GM YBG201 - External, M8×1.0, 16mm IC, GM chip-breaker, YBG201
• RT16.01N-1.50GM YBG201 - External, M10×1.5, 16mm IC, GM chip-breaker, YBG201 (workhorse)
• RT16.01N-1.75GM YBG201 - External, M12×1.75, 16mm IC, GM chip-breaker, YBG201
• RT16.01N-2.00GM YBG201 - External, M16×2.0, 16mm IC, GM chip-breaker, YBG201
• RT16.01N-2.50GM YBG201 - External, M24×2.5, 16mm IC, GM chip-breaker, YBG201
• RT16.01N-1.50GMPB YBG205 - External, M10×1.5, 16mm IC, GMPB partial profile, YBG205 (roughing)

UN Unified Threading + 60° Partial Profile — 5 SKUs (Full UN Coverage)

UN Unified threads are the North American standard per ANSI B1.1. 60° angle with flat root. TPI (threads per inch) range 8-20. ZCC·CT stocks the most common UN pitches (12 TPI) as full-profile inserts, and covers the remaining 14/16/18/20/24 TPI range with the 60° partial profile (one insert covers any TPI from 8-20).

• RT16.01N-12UN YBG201 - External, 12 TPI (3/4"-12 UN), 16mm IC, YBG201 (full profile)
• RT16.01N-AG60 YBG201 - External, 60° partial profile, 8-20 TPI coverage, YBG201 (one insert = all UN TPI)
• RT16.01W-AG60 YBG201 - External, 60° partial profile (W type), 8-20 TPI, YBG201
• RT16.01W-AG60B YBG202 - External, 60° partial profile, B-type, YBG202 (semi-finishing)
• RT16.01W-AG60PB YBG205 - External, 60° partial profile, PB-type, YBG205 (roughing)

W Whitworth + BSPT Taper — 4 SKUs

W Whitworth (BSW) uses 55° sharp V profile with rounded root. BSPT is 60° tapered pipe per ISO 7 (not to be confused with NPT 60° standard). ZCC·CT covers both standards in the same RT16 family with W or BSPT suffixes.

• RT16.01N-11WPB YBG205 - External, 11 WPB (Whitworth parallel pipe), YBG205
• RT16.01N-11WPB YBG202 - External, 11 WPB, YBG202 (semi-finishing)
• RT16.01N-14WPB YBG205 - External, 14 WPB, YBG205
• RT16.01N-1.00GMPB YBG205 - External, 1.00mm pitch, GMPB partial profile, YBG205

NPT Taper Pipe — 1 SKU (Featured)

NPT (National Pipe Taper) uses 60° thread angle and is the standard for pressure-tight pipe joints in North America. ZCC·CT stocks RT16.01N-11.5NPT for the most common NPT size.

• ZCC.CT RT16.01N-11.5NPT YBG201 Carbide Insert - External, 11.5 TPI NPT (1/2"-11.5 NPT), 16mm IC, YBG201

Partial Profile 60° / 55° + RT11 (Small Lathe) — 1 SKU (Featured)

Partial profile inserts cover multiple pitches with one insert — useful for unknown or variable-pitch applications. The RT11 family uses 11mm IC for small lathes and internal boring bars.

• RT11.01N-1.50GM YBG201 - 11mm IC (small lathe), 1.5mm pitch, GM, YBG201

Frequently Asked Questions

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