About PAC Precision Tools USA
CNC Tooling and Support for U.S. Machine Shops
PAC Precision Tools USA, also referred to as PAC Tools, is a CNC tooling supplier and distributor serving machine shops, manufacturers and industrial distributors across the United States. Its product range includes CNC tool holders, ER collets, tool holder bushings, retention knobs, live and dead centers, and machining accessories.
Precision CNC Tooling
Tool Holders, ER Collets & Machining Accessories
U.S.-Based Distribution
Elk Grove Village, Illinois
Reliable Tooling Supply
Precision Tooling Solutions for CNC Applications

Who We Are
We are a CNC tooling supplier and distributor serving customers with tooling requirements for milling, drilling, turning and other machining applications. Our range includes tool holders, collets, tool holder bushings, retention knobs, live and dead centers, tooling packages and machining accessories.
Customers can explore our product collections, consult technical resources and contact our team with product-selection or ordering questions. Our focus is helping buyers identify tooling that matches their machine, application and production requirements.
Need Help Selecting Tooling for Your Machine?
Our technical support desk and regional sales representatives are ready to review your machining requirements, verify spindle fit, and recommend the best tooling solution.
Our CNC Tooling Range
Browse CNC tool holders, including ER collet holders, end mill holders, hydraulic holders, face mill holders and shrink-fit holders. Explore ER collets and other collet systems, along with bushings, retention knobs, live and dead centers and supporting accessories.
Check the individual product information for dimensions, taper options, compatibility and applicable operating specifications before ordering.
CNC Tool Holders
ER collet holders, end mill holders, hydraulic chucks, face mill holders & shrink-fit holders engineered for rigid tool clamping.
Collets & Collet Systems
Precision ER collets, steel sealed collets, coolant jet collets, and tap collets delivering high concentricity (<0.003mm).
Tool Holder Bushings
CNC lathe turret bushings, boring bar reduction sleeves, and straight shank adapters precision ground for concentric rigidity.
Retention Knobs
Precision pull studs for CAT40, CAT50, BT30, and BT40 spindles with coolant-through and solid retention options.
Machining Accessories
Tightening fixtures, ER torque wrenches, edge finders, tapping adapters, and comprehensive starter tooling packages.
Help Choosing the Right Tooling
Tooling selection starts with the machine and application. When contacting PAC Tools, share your spindle taper, holder type, cutting-tool shank diameter, workpiece material and machining operation. A PAC EDP number or existing product reference can help identify the item you need.
Consult product specifications and technical documentation when comparing options. For selection, availability, pricing and ordering questions, contact our team or your regional sales representative.
Spindle Taper & Machine
Specify your machine model and spindle interface: CAT40, CAT50, BT30, BT40, HSK-A63, HSK-A100, or Morse Taper.
Spindle MatchHolder Type & Shank Diameter
Identify the cutting tool shank size and preferred clamping system (ER collet chuck, hydraulic, shrink-fit, or end mill holder).
Tool InterfaceWorkpiece Material & Operation
Share whether the operation is rough milling, high-speed finishing, deep-hole drilling, or turning in aluminum, steel, or tough alloys.
Cutting DynamicsPAC EDP Number Reference
Have a PAC EDP reference or competitor part number? Share it with our desk for immediate cross-referencing and availability check.
Fast Cross-ReferenceProduct Information and Quality
Compare tooling using product-specific information. Dimensions, compatibility and applicable performance specifications can differ between product families. Refer to the relevant product page, catalog or technical document, and contact PAC Tools when you need clarification before ordering.
Taper Runout & Spindle Contact
Precision ground taper geometry ensures >85% spindle taper contact, minimizing runout, maximizing rigidity, and preventing premature tool wear.
Dynamic Balancing Limits
Factory balanced to G2.5 specifications to suppress centrifugal vibrations, protect machine spindle bearings, and deliver superior surface finish.
Collet Clamping Concentricity
Each collet is checked with calibrated gauge pins at 4x diameter overhang, ensuring repeatable clamping accuracy for carbide and HSS cutting tools.
Precision Tooling Specifications & Technical Resources
Access detailed product specifications, dimensional information, and technical literature to help you select the right CNC tooling for your machining applications. For product compatibility, technical documentation, or additional assistance, contact our U.S. sales and support team.
Company Details and U.S. Support
Contact PAC Precision Tools USA for help with product identification, availability, pricing, orders and post-purchase questions. Visit our Contact and Sales Support pages for current contact details and regional assistance.
PAC Precision Tools USA
Authorized U.S. Regional Network
PAC Tools maintains direct sales support through established regional representative partners serving major manufacturing states:
Industry Experience and Technical Resources
Explore our CNC tooling guides, product catalogs and technical resources to compare products and understand tooling applications. Follow PAC Tools for product updates and manufacturing-event news.
CNC Tool Holder Selection Guide
Compare taper options (CAT, BT, HSK), clamping mechanisms (collet, hydraulic, shrink-fit), runout limits, and gauge lengths for specific machining operations.
Product Catalogs & Literature
Download master CNC tooling catalogs, ER collet dimension charts, bushing schematics, and new product flyers for machine shop reference.
Contact PAC Tools for Tooling Guidance
Send your machine model, spindle interface, cutting-tool shank size, or existing part number to the PAC Tools team for product selection guidance and ordering assistance.
Frequently Asked Questions
Practical answers to common questions about PAC Precision Tools USA, our product range, and how to get selection support.
