MILWAUKEE Plug Tap and Drill Bit: 2 Pc, 1/4"-18 Tap
SKU 3G-OTH-295910
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Frequently Asked Questions
What is the MILWAUKEE 49-57-5591 plug tap and drill bit set used for?
This 2-piece set is used for threading and drilling holes in metal, typically for creating threaded holes for bolts or screws. The 1/4-18 tap cuts internal threads, while the 7/16 drill bit creates the pilot hole. It is common in plumbing, electrical, and general fabrication work.
What are the specifications of the MILWAUKEE 49-57-5591 tap and drill bit set?
The set includes a 1/4-18 plug tap and a 7/16 drill bit. The tap has a straight flute design, ideal for through-hole threading. The manufacturer part number is 49-57-5591. Both tools are designed for use with hand or machine tools in metalworking applications.
Where to buy the MILWAUKEE 49-57-5591 tap and drill bit set worldwide?
3G Electric supplies the MILWAUKEE 49-57-5591 plug tap and drill bit set to customers worldwide. We handle full logistics, customs clearance, and delivery to your location. Contact us for a quote and lead time on this item.
How to select the correct tap and drill bit size for a 1/4-18 thread?
For a 1/4-18 National Pipe Thread (NPT) or Unified Thread, the correct drill bit size is typically 7/16 inch. This creates the proper hole diameter for the tap to cut threads. Always match the tap size to the thread specification and use a drill bit that matches the tap's recommended pilot hole size.
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3G Electric supplies MILWAUKEE drill bit & pipe tap sets. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.







