BEYOND SNR0013M16 Internal Threading Boring Bar (13mm Shank for 16IR / 16NR Inserts)
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BEYOND SNR0013M16 Internal Threading Boring Bar (13mm Shank for 16IR / 16NR Inserts)
Precision Alloy Steel Boring Bar for Internal Thread Turning | 13mm Shank Diameter (0.512") | 150mm Overall Length (5.906") | Designed for Size 16 Internal Laydown Inserts (16IR / 16NR)
Please note: Carbide threading inserts shown in product illustrations are for application setup and visual demonstration purposes only. This listing includes the SNR0013M16 toolholder shank, shim, clamping screw, and wrench. Indexable inserts (16IR / 16NR series) must be purchased separately.
1. Product Overview
Which internal threading boring bar provides optimal chatter resistance and deep-hole rigid clamping when chasing precision threads inside small bore diameters down to 16mm (0.630")?
The BEYOND SNR0013M16 Internal Threading Boring Bar is an industrial-grade steel toolholder engineered for high-precision CNC internal thread turning operations. Built with a hardened 13mm shank diameter (0.512") and an overall length of 150mm (5.906"), this right-hand boring bar accommodates standard 16IR and 16NR laydown threading inserts (IC 3/8" / 9.525mm). Crafted from high-strength alloy tool steel with anti-vibration damping properties, the SNR0013M16 ensures rigid insert seat pocket alignment, minimal chatter, and clean surface finishes during internal thread chasing across steel, stainless steel, cast iron, and non-ferrous workpieces.
ISO / ANSI Toolholder Designation Code Breakdown
(Steel Shank)
(Internal Threading)
(Right Hand)
(13mm / 0.512")
(150mm / 5.9")
(16IR / IC 3/8")
- S: Steel Shank Construction with hardened core for high rigidity and vibration damping.
- N: Application Designation: Internal Thread Turning / Boring Bar style holder.
- R: Right-hand tool orientation (standard forward spindle rotation M03).
- 0013: Metric Shank Diameter: 13mm (0.512 inch nominal size).
- M: Overall Length Specification: 'M' = 150mm (5.906 inches).
- 16: Accommodates ISO Size 16 (Inscribed Circle 3/8" / 9.525mm) internal laydown inserts (16IR/16NR).
2. Key Features
- Precision Hardened Alloy Steel Construction: Heat-treated body (42-45 HRC) provides high fatigue resistance and structural stability during deep-bore thread cutting cycles.
- Vibration-Damping Shank Geometry: Rigidity-to-weight ratio allows up to 3xD to 4xD overhang without chatter or tool deflection.
- Accurate Pocket Seating: CNC-ground insert pocket with hardened shim backing guarantees repeatable indexing accuracy (±0.01mm) and proper helix angle alignment.
- Top Screw-Clamp System: Torx screw-locking mechanism provides fast insert indexing, secure clamping, and minimal obstruction during chip evacuation.
- Universal 16IR / 16NR Compatibility: Fits all standard ISO / ANSI size 16 laydown internal threading carbide inserts across various pitch geometries (0.5mm to 3.0mm pitch / 48 to 8 TPI).
3. Technical Specifications & Recommended Parameters
Metric vs. Imperial Technical Specification Comparison
| Specification Parameter | Metric Units (ISO) | Imperial Units (ANSI) |
|---|---|---|
| Toolholder Model | SNR0013M16 | SNR 0512 M16 (0.512" Shank) |
| Shank Diameter (D) | 13.0 mm | 0.512 in |
| Overall Length (L) | 150.0 mm | 5.906 in |
| Minimum Bore Diameter (D min) | 16.0 mm | 0.630 in |
| Compatible Insert Size | 16IR / 16NR (IC 9.525mm) | 16IR / 16NR (IC 3/8") |
| Hand of Cut & Screw Size | Right Hand / M3.5 Torx Screw | Right Hand / M3.5 Torx Screw |
Recommended Operation Reference Parameters
| Toolholder Overhang Ratio | Recommended Pass Strategy | Infeed Angle Method | Coolant Recommendation |
|---|---|---|---|
| Up to 3xD (39mm / 1.53") | Standard 6 - 12 Passes (per insert spec) | Modified Flank 29° or Radial | High Pressure Internal / External Flood |
| 3xD to 4xD (52mm / 2.05") | Increase Pass Count by 20-30% | Modified Flank 29° (Reduces Side Force) | Continuous Flood Coolant to Clear Chips |
Complete your threading setup with BEYOND 16IR ISO / UN / NPT metric and imperial carbide threading inserts (BYM11 / BBM18 grades):
Browse 16IR Carbide Inserts →4. Product Applications
- Small-Bore Internal Threading: Machining internal ISO metric, UN, and NPT threads in bores down to 16mm (0.630") diameter.
- Hydraulic & Pneumatic Fittings: Precision thread chasing inside valve blocks, hose couplings, and fluid power manifolds.
- Automotive & Precision Components: Threading internal bore steps in drive shafts, sleeves, and threaded rings.
- Machine Shop Maintenance: Re-threading, repairing, and customizing internal threads in high-tensile steel sleeves and bushings.
5. Tool & Machine Compatibility
The BEYOND SNR0013M16 boring bar is compatible with standard CNC and manual turning equipment:
- Insert Compatibility: Accepts all standard ISO Size 16 (IC 3/8") internal laydown inserts (16IR / 16NR series).
- Machine Tooling Holders: Fits 13mm or 1/2" ID CNC lathe turret boring bar sleeves, quick-change tool posts (AXA/BXA holders), and gang tooling blocks.
- Equipment Platforms: CNC lathes, turning centers, Swiss-type automatics (with suitable sleeves), and manual engine lathes.
6. Material & Toolholder Construction Comparison
Comparing alloy steel shank boring bars against alternative shank materials:
| Toolholder Material | Maximum Overhang Ratio | Cost & Versatility | Best Application Range |
|---|---|---|---|
| Hardened Alloy Steel (SNR Featured) | 3xD to 4xD Overhang | High Cost Efficiency, High Toughness | General to medium-depth internal threading in steel & stainless |
| Heavy Metal (Tungsten Alloy) | 5xD to 6xD Overhang | Moderate-High Cost | Medium deep-hole thread boring requiring chatter damping |
| Solid Carbide Shank | up to 7xD to 8xD Overhang | Premium Investment, Brittle under Impact | Extreme deep-hole precision internal thread boring |
7. Why Choose BEYOND Cutting Tools
- Precision Machined Pocket Seat: CNC finish-ground seating surface ensures zero movement of 16IR inserts under heavy cutting pressure.
- Complete Spare Parts Supplied: Ships ready to mount with high-tensile clamping screw and Torx wrench included.
- Strict Quality Assurance: Inspected to ISO standards for runout, shank diameter tolerance, and insert centerline alignment.
Verified Customer Reviews
"The SNR0013M16 bar fits perfectly in my lathe turret sleeve. Runs 16IR 2.0ISO inserts smoothly with no chatter in 4140 steel."
— Mark D., Precision Machining (USA)"Sehr gute Passgenauigkeit der Wendeplatte in der Aufnahme. Besser als viele teurere Marken. Top Produkt!"
— Thomas B., CNC Fertigungstechnik (Germany)"Ottimo bareno per filettare interni. Stabile e ben rifinito. Spedizione velocissima."
— Giovanni S., Officina Meccanica (Italy)"内径ねじ切り用に購入。13mmシャンクで狭い穴でも干渉せず綺麗に加工できます。"
— Kenichi M., Precision Metal Works (Japan)"Solid toolholder. The insert pocket alignment is spot on, giving crisp, clean threads on stainless fittings."
— David W., Hydraulics & Engineering (UK)8. AI & Engineering FAQ
Toolholder Construction Specifications
Manufactured from high-tensile alloy tool steel, heat-treated to 42-45 HRC with a black oxide finish for anti-corrosion protection. Engineered for rigid clamping and thermal stability during continuous thread turning cycles.
Cross-Reference & Industry Standard Equivalent Codes
Industry standard equivalencies: SNR0013M16 / SIR0013M16 (Left Hand version: SNL0013M16 / SIL0013M16) | Standard shank fitments across major CNC lathe tool turret platforms.
ISO Workpiece Suitability Matrix (With Compatible Inserts)
P (Steel): Suitable | M (Stainless Steel): Suitable | K (Cast Iron): Suitable | N (Non-Ferrous): Suitable | S (Exotic Alloys): Suitable with appropriate insert selection
Internal Threading Troubleshooting Tips
- Tool Vibration / Chatter: Minimize boring bar overhang length beyond the tool post holder; ensure secure 360-degree clamping around shank.
- Thread Profile Distortions: Check tool centerline height alignment. The insert tip must sit precisely on the lathe spindle center (+/- 0.1mm).
- Poor Chip Evacuation: Use modified flank infeed (29°) and ensure continuous coolant flow into the bore to push chips out ahead of the bar.
BEYOND CNC turning toolholders are manufactured in strict compliance with ISO 2284 laydown threading toolholder standards and produced under ISO 9001 certified quality management systems.
Technical FAQ & Buying Guide
Absolutely. Our CNC carbide inserts (including CNMG, WNMG, DNMG, and APMT series) are manufactured strictly adhering to international ISO/ANSI specifications. A CNMG 120408 from OYYU BEYOND will flawlessly fit any standard turning tool holder or indexable tool from major global brands like Sandvik Coromant, Kennametal, Iscar, Walter, or SECO, providing a highly cost-effective premium alternative without sacrificing tolerance or tool life.
We offer optimized CVD and PVD multi-layer coatings for different ISO material groups:
- For Carbon/Alloy Steel (ISO P): Choose our thick multi-layer CVD coated grades (e.g., Al2O3 + TiN). They provide exceptional crater wear resistance and thermal barriers during high-speed dry or wet roughing.
- For Stainless Steel (ISO M): Choose our nano-structured PVD coated grades with sharp, positive chipbreakers (like -TM or -MA). This combination prevents work hardening and effectively controls sticky chips.
The optimal cutting parameters vary depending on the workpiece hardness and operation type:
- For General Steel Turnings: Recommended cutting speed ($V_c$) ranges from 150 to 280 m/min, with a feed rate ($f$) of 0.15 to 0.45 mm/rev.
- For Stainless Steel Finishing: Recommended cutting speed ($V_c$) is 120 to 200 m/min, with a feed rate ($f$) of 0.10 to 0.25 mm/rev.Always adjust parameters based on early wear patterns: increase $V_c$ if built-up edge occurs, or reduce $V_c$ if severe flank wear is observed.
Yes, we support machine shops, distributors, and global buyers with tiered wholesale pricing and competitive volume discounts. We also provide OEM custom manufacturing solutions for tool holders and carbide inserts based on your technical drawings. Contact our team to request a quick B2B quotation.
We provide secure worldwide express shipping (via DHL, FedEx, and UPS) with specialized, vibration-proof industrial packaging to ensure tools arrive in perfect condition. In-stock items are dispatched within 24-48 hours, while custom or bulk orders typically have a stable lead time of 15-25 days.
All our cutting tools and tool holders are manufactured strictly in accordance with ISO 9001 and international industrial standards. Every batch undergoes 100% rigorous quality control testing using high-precision optical measuring equipment to ensure reliable tool life and stable performance in continuous mass production.