BEYOND SER1616H11 External Right-Hand Threading Toolholder | 16mm (0.625") Square Shank CNC Lathe Turning Bar for 11ER & 11ERM Indexable Carbide Inserts
BEYOND SER2020K16 External Right-Hand Threading Toolholder | 20mm (0.787" Imperial Sizing) CNC Lathe Turning Bar for 16ER & 16ERM Indexable Carbide Inserts
BEYOND SEL2525M16 External Left-Hand Threading Toolholder | 25mm (1.000" Imperial Sizing) CNC Lathe Turning Bar for 16IR & 16IRM Indexable Carbide Inserts
BEYOND SEL1616H16 External Left-Hand Threading Toolholder | 16mm (0.625" Imperial Sizing) CNC Lathe Turning Bar for 16IR & 16IRM Indexable Carbide Inserts
BEYOND SER1212H11 External Right-Hand Threading Toolholder | 12mm (0.472" Imperial Sizing) CNC Lathe Turning Bar for 11ER & 11ERM Indexable Carbide Inserts
BEYOND SER External Threading Tool Holders: 53 SKUs for Outside Thread Cutting
BEYOND SER series external threading tool holders are precision-ground square-shank holders for outside thread cutting on CNC lathes. Compatible with the four ISO standard threading insert sizes — 11ER, 16ER, 22ER, 27ER — our 53-SKU SER catalog covers thread pitches from 0.5 mm to 6.0 mm across shank sizes from 10×10 mm to 32×32 mm. Each holder is CNC-machined from vacuum-quenched alloy steel (DIN 1.3343 / AISI M2 equivalent), heat-treated to HRC 60-62, and precision-ground for shank and pocket tolerances within ±0.01 mm. Every holder follows the BEYOND 9-position code structure and is fully interchangeable with inserts from Sandvik, Kyocera, Mitsubishi, Sumitomo, Korloy, ZCC.CT, Walter, and Iscar per ISO 1832 and ISO 5608. Same-day shipping to 50+ countries via DHL / UPS / FedEx.
SER vs. Other BEYOND Holder Series
The SER series uses central-screw clamping (Position 1 = "S" in the BEYOND 9-position code), the ISO standard screw-clamp mechanism. Three other BEYOND series cover alternative clamping styles for different application needs:
| Property | SER (Current) | SEL | SCR | SCL |
|---|---|---|---|---|
| Position 1 code | S (central screw) | S (central screw) | S (central screw) | S (central screw) |
| Position 2 shape | E (External threading) | E (External threading) | C (80° rhombic) | C (80° rhombic) |
| Position 3 approach | R (Right-hand) | L (Left-hand) | R (Right-hand) | L (Left-hand) |
| Insert family | ER series | ER series | CCMT / CCGT | CCMT / CCGT |
| Application | Standard external threading (right-hand) | Reverse external threading (left-hand) | Standard turning (right-hand) | Reverse turning (left-hand) |
| Total SKUs | 53 | 30+ | 95 | 50+ |
| Best for | Standard CNC lathe external thread cutting | Sub-spindle / reverse-spindle work | General 80° turning | Reverse turning |
Quick selection: Choose SER when you need standard right-hand external threading on a CNC lathe with normal spindle rotation. Choose SEL for sub-spindle work or reverse-spindle lathes. Choose SCR / SCL for general 80° turning, not threading-specific. For broader tool holder guidance, see our Tool Holder Guide.
Compatible Threading Inserts (11ER / 16ER / 22ER / 27ER)
BEYOND SER holders accept the four most common ISO standard external threading insert sizes. The "ER" suffix denotes External Right-hand orientation; "EL" is the left-hand equivalent. Each insert size covers a specific pitch range:
| Insert Size | IC (mm) | Pitch Range (mm) | UNF / TPI Range | Min Shank § | Holder Series |
|---|---|---|---|---|---|
| 11ER | 6.35 | 0.5 - 1.0 | 40 - 24 TPI | 10 mm | SER1010H11 |
| 16ER | 9.525 | 0.75 - 1.75 | 32 - 14 TPI | 12 mm | SER1212H16 / SER1616H16 |
| 22ER | 12.7 | 1.5 - 3.0 | 16 - 8 TPI | 20 mm | SER2020K22 / SER2525M22 |
| 27ER | 15.875 | 2.0 - 6.0 | 12 - 4 TPI | 25 mm | SER2525M27 / SER3232P27 |
Browse our Mitsubishi threading insert collection for direct-fit ER inserts, or use our Grade Cross-Reference Hub to find equivalents across 8 brands (Mitsubishi, Sandvik, Kyocera, Tungaloy, TaeguTec, KORLOY, Sumitomo, ZCC.CT).
BEYOND 9-Position Tool Holder Code Reference
The BEYOND 9-position tool holder code identifies, in sequence, the fastening mode, insert shape, approach angle, relief angle, hand direction, shank height, shank width, shank total length, and insert IC code. This is the international ISO 5608 / DIN 4988 / ISO 1832 nomenclature.
| Position | Symbol Options | Meaning |
|---|---|---|
| 1 — Fastening mode | A · C · D · M · P · S · W | S = central screw (ISO standard, most common); D = dual clamping; M = strong multi-point; P = pin-lever clamp |
| 2 — Insert shape (ISO 1832) | C · D · R · S · T · V · W | C = 80° rhombic (CCMT/CNMG); D = 55° rhombic (DCMT/DNMG); E = External threading (ER); T = 60° triangle; V = 35° rhombic |
| 3 — Approach angle | A · B · C · D · E · F · G · H · J · L · N · P · V | V = 72.5° (threading proximity); B = 75°; J = 93°; L = 95°; H = 107.5° |
| 4 — Relief angle | B · C · D · E · N · P | C = 7° positive (standard); B = 5°; D = 15°; E = 20° (for SER threading); N = 0° negative |
| 5 — Hand direction | L · N · R | R = Right-hand (SER series); L = Left-hand (SEL series); N = Universal / no direction |
| 6 — Shank height (mm) | 2-digit numeric | 10 / 12 / 16 / 20 / 25 / 32 mm |
| 7 — Shank width (mm) | 2-digit numeric | 10 / 12 / 16 / 20 / 25 / 32 mm (matches height for square shanks) |
| 8 — Shank length code | H · K · M · P | K = 125 mm (standard); H = 100 mm (short); M = 150 mm (long); P = 170 mm (extra long) |
| 9 — Insert IC code | 2-digit numeric | 07 = 6.35 mm; 11 = 6.35 mm; 16 = 9.525 mm; 22 = 12.7 mm; 27 = 15.875 mm |
Example: SER2525M22 = S (central screw) + E (external threading) + R (right-hand approach) + 2525 (25×25 mm square shank) + M (150 mm length) + 22 (12.7 mm insert IC). SER1212H16 = S + E + R + 1212 (12×12 mm) + H (100 mm short) + 16 (9.525 mm IC). All 53 BEYOND SER SKUs follow this structure.
SER Holder Specifications: Shank Sizes & Insert IC
All 53 BEYOND SER SKUs are organized by shank height and height as well as by insert IC. The table below maps the most common configurations:
| Shank § × W | Standard Length (K=125mm) | Short Length (H=100mm) | Long Length (M=150mm) | Extra Long (P=170mm) | Compatible Insert IC |
|---|---|---|---|---|---|
| 10 × 10 mm | SER1010K11 | SER1010H11 | SER1010M11 | — | 11 (6.35 mm) |
| 12 × 12 mm | SER1212K16 | SER1212H16 | SER1212M16 | — | 16 (9.525 mm) |
| 16 × 16 mm | SER1616K16 | SER1616H16 | SER1616M16 | — | 16 (9.525 mm) |
| 20 × 20 mm | SER2020K22 | — | SER2020M22 | — | 22 (12.7 mm) |
| 25 × 25 mm | SER2525K22 | — | SER2525M22, M27 | SER2525P27 | 22 (12.7 mm) / 27 (15.875 mm) |
| 32 × 32 mm | — | — | SER3232M27 | SER3232P27, P22 | 22 (12.7 mm) / 27 (15.875 mm) |
Speeds & Feeds for ER Threading Inserts on SER Holders
Starting Vc values for ER threading inserts in SER holders, by insert IC and material. Threading Vc is typically 30-50% lower than turning Vc because threading involves higher engagement and chip load per revolution.
| Insert IC | Steel (P30) | Stainless (M20) | Cast Iron (K20) | Aluminum (N20) |
|---|---|---|---|---|
| 11ER | Vc 80-120 m/min, f 0.05-0.15 mm/rev | Vc 60-100 m/min, f 0.05-0.10 | Vc 60-100 m/min, f 0.05-0.12 | Vc 150-300 m/min, f 0.05-0.15 |
| 16ER | Vc 100-150 m/min, f 0.08-0.20 mm/rev | Vc 80-120 m/min, f 0.08-0.18 | Vc 80-120 m/min, f 0.08-0.18 | Vc 180-350 m/min, f 0.08-0.20 |
| 22ER | Vc 120-180 m/min, f 0.10-0.25 mm/rev | Vc 100-150 m/min, f 0.10-0.20 | Vc 100-150 m/min, f 0.10-0.22 | Vc 200-400 m/min, f 0.10-0.25 |
| 27ER | Vc 140-200 m/min, f 0.15-0.35 mm/rev | Vc 120-170 m/min, f 0.15-0.30 | Vc 120-170 m/min, f 0.15-0.32 | Vc 250-450 m/min, f 0.15-0.35 |
Speeds must be reduced 20-30% when using long-reach SER holders (P-series, 170 mm) or when threading Inconel / titanium alloys. For threading parameter guidance on specific grades, see our Speeds & Feeds Hub.
Applications: When to Use SER External Threading Holders
BEYOND SER external threading holders cover the four most common outside thread cutting scenarios on CNC lathes:
- Hydraulic fittings & valve bodies — 16ER / 22ER inserts on SER1616 / SER2020 holders for NPT, BSP, JIC thread profiles.
- Lead screws & acme shafts — 27ER inserts on SER2525M27 / SER3232P27 holders for coarse-pitch Acme and lead screw threads.
- Fastener & stud production — 16ER / 22ER inserts for metric and imperial threads on turned studs and bolts.
- Thread repair & refurbishment — 11ER / 16ER inserts for repairing damaged external threads on shafts and studs.
Material matrix: SER + ER inserts work on low-carbon steel, alloy steel, stainless steel (300/400 series), aluminum alloys, brass, and cast iron. For specific material-grade matching, see Carbide Inserts by Material.
Why Choose BEYOND SER Threading Holders
BEYOND SER holders deliver four differentiators that matter most to production CNC turning environments:
ISO 9001 Certified Manufacturing
Every BEYOND SER holder is CNC-machined and heat-treated under ISO 9001 quality system at our Hangzhou facility. Each shipment includes a factory calibration certificate with measured shank and pocket dimensions.
30-50% Below OEM Price
BEYOND SER holders match the ISO 1832 / ISO 5608 dimensional specs of Sandvik, Kyocera, and Mitsubishi equivalents at 30-50% lower landed price — same clamping force, same rigidity, same heat treatment.
Drop-In Compatible with Major Brands
BEYOND SER holders are dimensionally identical to leading carbide insert brands per ISO 1832 (insert shape) and ISO 5608 (insert pocket). Sandvik, Kyocera, Mitsubishi, Sumitomo, Korloy, ZCC.CT, Walter, and Iscar inserts all fit with matching 9-position codes.
Same-Day Shipping to 50+ Countries
All 53 BEYOND SER SKUs ship same-day from our Hong Kong warehouse with DHL / UPS / FedEx to 50+ countries in 3-7 business days. Volume discounts: 2-9 pcs 6% off, 10+ pcs 12% off.
Explore Related Tooling & Resources
Six Topic Cluster Pillars
Pillar 1 — grade selection by workpiece material (P / M / K / N / S / H).
Pillar 2 — turning, milling, drilling, threading insert geometry.
Pillar 3 — decode ISO 1832 insert nomenclature (CNMG, WNMG, ADMT, ER).
Pillar 4 — equivalent grades across 8 brands (Mitsubishi / Sandvik / Kyocera / Tungaloy / KORLOY / TaeguTec / Sumitomo / ZCC.CT).
Pillar 5 — Vc / fz / ap starting parameters by material and operation.
Pillar 6 — boring bar / end mill holder / collet selection.
Other Brand Collections We Distribute
Japanese-origin carbide tooling with US7020 / UE6035 PVD grades.
PR series coated carbide turning inserts, CA6515 / PR1125 grades.
GC series turning + CoroDrill indexable drilling.
AC8025P / AC8035P CVD turning grades.
Japanese tooling with T9000 series turning inserts.
Korean carbide tooling with NC series turning + milling grades.
Korean tooling with TT8000 series turning grades.
Chinese carbide with YBC series turning + DNMG / CNMG families.
Israeli tooling with IC907 / IC908 chipformers.
German-engineered inserts under Tiger·tec® Silver (CVD) and Gold (PVD) coating platforms.
American KC™ grade system: KC5010 (live), KC7315, KC7325, KCK20, KCS10, KCP25 on-demand.
SNR / SNL boring bars for 08IR–27IR internal threading inserts — companion series to SER external threading.
Reading from the Field
Identify genuine carbide vs HSS / coated HSS by spark test, weight, and edge geometry.
BT40 vs CAT40 vs HSK63A: taper standards, applications, and pull-stud compatibility.
Internal boring tool types for finishing, roughing, and contour work on CNC lathes.
Frequently Asked Questions
What is the difference between an SER and SEL holder?
SER holders use right-hand approach angle (Position 3 = "R"), used with right-hand ER threading inserts on CNC lathes with normal spindle rotation. SEL holders use left-hand approach (Position 3 = "L"), used with left-hand EL inserts on lathes with reverse spindle rotation or for sub-spindle work where the spindle direction reverses mid-cycle. The dimensional specs are otherwise identical — same shank sizes, same insert pocket geometry, same screw clamp. Choose SER for standard single-spindle CNC lathe threading, SEL for sub-spindle or reverse-spindle applications.
What insert sizes do BEYOND SER holders accept?
BEYOND SER holders accept the four most common ISO standard threading insert sizes: 11ER (6.35 mm IC), 16ER (9.525 mm IC), 22ER (12.7 mm IC), and 27ER (15.875 mm IC). The "ER" suffix denotes External Right-hand orientation; the matching left-hand inserts are 11EL / 16EL / 22EL / 27EL. Each insert IC covers a specific pitch range from 0.5 mm (11ER) up to 6.0 mm (27ER). For details on threading insert geometry and grade selection, see Carbide Inserts by Operation.
Are BEYOND SER holders compatible with Sandvik, Kyocera, and Mitsubishi inserts?
Yes. BEYOND SER holders conform to ISO 1832 (insert shape) and ISO 5608 (insert pocket) dimensional standards, making them fully interchangeable with inserts from Sandvik (R200 series), Kyocera (16ER / 22ER series), Mitsubishi (16ER / 22ER series), Sumitomo, Korloy, ZCC.CT, Walter, and Iscar. As long as the insert matches the holder's 9-position code (especially Position 2 = "E" for external threading and Position 9 = insert IC), it fits. We recommend pairing BEYOND SER holders with grade-equivalent inserts from these leading brands for production threading.
How do I select the right shank size for my CNC lathe?
Match the holder shank size to your lathe's turret station and the workpiece diameter. For 12-station CNC lathes (e.g., Daewoo Lynx, Hardinge Conquest), use 12×12 mm or 16×16 mm shanks (SER1212 / SER1616). For 16-station or larger CNC lathes (e.g., Mori Seiki SL, Mazak QT), use 20×20 mm or 25×25 mm shanks. For heavy-duty lathes (e.g., Mazak Integrex, Okuma LB), use 25×25 mm or 32×32 mm shanks (SER2525 / SER3232). The shank height must fit the lathe turret pocket dimensions (typically 20 mm or 25 mm).
Can BEYOND SER holders be used for ACME threads and multi-start threads?
Yes, with the right insert geometry. For ACME threads (29° included angle), use full-profile ACME threading inserts in 22ER or 27ER IC, mounted in SER2525M27 or SER3232P27 holders. For multi-start threads, the standard ER inserts can be indexed per revolution to cut each thread start sequentially, but a better approach is to use a multi-start threading insert geometry (specialized chipformer). BEYOND SER holders accept both standard and multi-start insert geometries because the pocket geometry conforms to ISO 5608. For coarse-pitch Acme threads (2.0-6.0 mm pitch range), use 27ER inserts in SER2525M27 / SER3232P27 holders.
What is the lead time for BEYOND SER holders to the US or EU?
All 53 BEYOND SER SKUs ship same-day from our Hong Kong warehouse with DHL Express to US / EU destinations in 3-7 business days. Larger orders (50+ pcs) ship via DHL ocean freight in 14-21 days at lower per-unit freight cost. Each shipment includes factory calibration certificate with measured shank and pocket dimensions. Volume discounts: 2-9 pcs 6% off, 10+ pcs 12% off. We accept PO from automotive, hydraulic fitting, valve body, fastener, and general machining manufacturers.
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Get BEYOND SER Threading Holders Quoted in 24 Hours
Send us your BEYOND SER reference (e.g., SER2525M22 for 22ER inserts in 25×25 mm shank) and we will return a landed-price quote including DHL / UPS / FedEx freight to your country. Volume discounts: 2-9 pcs 6% off, 10+ pcs 12% off. We accept PO from automotive, hydraulic fitting, valve body, fastener, and general machining manufacturers. For AS9100 / Nadcap / ISO 9001 compliance documentation, please specify at time of quote.
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