






⚙️ Lock in precision, unlock your CNC’s full potential!
The QWORK ER20 A Collet Clamping Nuts (4-pack) are precision-ground, hardened 40CR steel nuts with a black oxide finish, designed to securely hold ER20 collets in CNC milling, lathe, and drilling applications. Compatible with a wide range of tool holders and accessories, these nuts offer durability, corrosion resistance, and reliable performance, backed by a hassle-free return policy.



| Material | Alloy Steel | 
| Fastener Type | Hex | 
| Thread Size | M 25 | 
| Exterior Finish | Black | 
| Color | 4 Pack | 
| Metal Type | Alloy Steel | 
| Finish Type | Powder Coated | 
| Brand | QWORK | 
| Item Weight | 0.27 Kilograms | 
| Inside Thread Size | M25 | 
| Size | ER20-A | 
| Item Diameter | 25 Millimeters | 
| UPC | 781380133464 | 
| Manufacturer | QWORK | 
| Part Number | WD4766 | 
| Item Weight | 9.6 ounces | 
| Item model number | WD4766 | 
| Finish | Powder Coated | 
| Shape | Hexagonal | 
| Item Package Quantity | 1 | 
| Head Style | Flat | 
| Cutting Diameter | 25 Millimeters | 
| Batteries Included? | No | 
| Batteries Required? | No | 
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