Click to enlarge

ESC20M | END MILL HOLDER - SET SCREW | END MILL HOLDERS

$6.00

Chicago, USA Stock -

Canada Stock -

Set Screw for 20mm End Mill Holder

Specification

Length: 16mm

Proj. Length: 20mm

Threadsize: M20

Delivery and Shipping

US Domestic Shipping Only: We ship exclusively within the United States using UPS as our primary carrier.
Processing Time: Orders are typically processed within 1–2 business days. Orders placed on weekends or holidays will be processed on the next business day.
Delivery Times: Delivery times vary based on the shipping method and destination (estimates are provided at checkout). Please note that carrier delays (e.g., weather or unforeseen issues) are beyond our control.
Costs & Methods: UPS Standard, Expedited, and Express methods are available. Shipping rates are calculated based on weight and destination at checkout.
Tracking & Support: Tracking information will be emailed once shipped. For tracking issues, errors, or damaged/lost packages, contact us at sales@pactoolsusa.com or 262-282-2456.

Description

Description

Set Screw for 20mm End Mill Holder

Accuracy

PAC Precision Tools' Set Screw End Mill Holders are designed to securely hold cutting tools with Weldon flats, preventing slippage or pull-out during heavy machining. These holders provide maximum rigidity and torque transmission for demanding CNC operations.

Features

Weldon flat set screw locking system
High rigidity for heavy-duty milling applications
Balanced for high-speed performance
AT3 Class taper accuracy
H5 bore tolerance
Hardness: HRC 56–58
Case depth: 0.8 mm ± 0.2 mm
Surface finish: Ra < 0.0005 mm
Engineered from premium case-hardened alloy steel

PAC Precision Tools, an distributor of End Mill Holders in the USA ensure secure clamping, high torque transfer, and consistent machining accuracy across multiple taper platforms.

Frequently Asked Questions

1. What is the use of a Set Screw in End Mill Holders? ▼

The Set Screw locks the cutting tool in place, ensuring it doesn’t slip during operation. It provides strong holding power, making it ideal for roughing or high-torque machining.

2. Are Set Screws included with the End Mill Holders? ▼

Yes, every PACTools End Mill Holder includes a high-quality Set Screw designed to perfectly match the holder and provide a reliable, secure fit.

3. How tight should I make the Set Screw? ▼

Tighten firmly using a torque wrench if possible. Over-tightening can cause tool shank damage, while under-tightening may lead to tool slippage or misalignment. For more guidance, you can contact us at +1 262-282-2456.

4. Can PACTools Set Screws be replaced? ▼

Yes, they can be easily replaced when worn or stripped. Using new, high-strength screws helps maintain consistent tool holding performance.

5. What materials are PACTools Set Screws made of? ▼

They are made from hardened alloy steel to resist wear and provide long-lasting durability, even under frequent tool changes.

6. What is an HSK Coolant Tube? ▼

An HSK Coolant Tube directs coolant through the holder directly to the cutting edge, keeping the tool cool and reducing chip buildup during machining.