High-quality ER Nuts are precision components engineered to securely clamp ER collets in tool holders, arbors, and adapters. Manufactured with hardened & precision ground threads, our ER nuts ensure reliable clamping force, superior accuracy, and long service life — ideal for CNC milling, drilling, tapping, and reaming operations.
🔎 What is an ER Nut?
An ER Nut is a threaded collet nut that holds an ER collet in place. It ensures the collet compresses uniformly and grips the cutting tool securely. Available in multiple sizes and types, ER nuts are essential accessories for ER series tool holding systems.
🏷️ Available ER Nut Sizes
|
ER Nut Size
|
Thread
|
|
ER11 Nut
|
M14 × 0.75
|
|
ER16 Nut
|
M22 × 1.5
|
|
ER20 Nut
|
M25 × 1.5
|
|
ER25 Nut
|
M32 × 1.5
|
|
ER32 Nut
|
M40 × 1.5
|
|
ER40 Nut
|
M50 × 1.5
|
Note: Clamping ranges are standard; consult drawing for exact ranges.
⚙️ Key Features
- Hardened & Precision Ground Threads for consistent clamping
- Low Runout Performance enhances machining accuracy
- Standard & Bearing Types Available
- Wide Size Range for ER11 to ER40 series
- Durable Finish for extended service life
- Compatible with All ER Collets & Holders
📌 ER Nut Types
✅ Standard ER Nut
General purpose nuts for everyday machining.
✅ Bearing ER Nut
Includes low-friction thrust bearings — ideal for high-speed & precision applications.
✅ Slim / Mini ER Nut
Reduced OD for tight tool holding setups.
💡 Applications
- CNC milling, drilling & reaming
- Tool rooms & maintenance
- Precision machining centers
- CAM production & high-volume jobs
- Retrofit tool holders & adapters
🔧 Technical Specifications
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Feature
|
Details
|
|
Material
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Alloy Steel / Hardened Steel
|
|
Hardness
|
HRC 48–56 (typical)
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|
Surface
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Precision ground finish
|
|
Standard
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DIN 6499 / ISO compatible
|
|
Thread Accuracy
|
Fine tolerance for repeatability
|
💼 Why Choose Us?
✔ Experienced Indian Manufacturer & Supplier
✔ In-house quality inspection & testing
✔ Wide range of ER nuts in stock
✔ Custom configurations on request
✔ Pan-India delivery & export services