CHICAGO-LATROBE Extension Tap: 5/8"-11 UNC, H11, 3 Flute, Plug Chamfer
3G Electric supplies the CHICAGO-LATROBE Extension Tap (SKU 449T02), a 5/8"-11 UNC spiral-point extension tap with an H11, plug chamfer, black oxide high-speed steel construction and 3 flutes (MPN 313604). We…
SKU 3G-OTH-313645
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Product Description
3G Electric supplies the CHICAGO-LATROBE Extension Tap (SKU 449T02), a 5/8"-11 UNC spiral-point extension tap with an H11, plug chamfer, black oxide high-speed steel construction and 3 flutes (MPN 313604). We interpret your threading needs, source this genuine OEM tool, and support your machining operations across 14 industrial departments — with specialist depth in combustion, pumps, and controls as an authorised distributor.
Frequently Asked Questions
What is the CHICAGO-LATROBE Extension Tap 5/8"-11 UNC used for?
This extension tap is used for threading blind or deep holes in metalworking applications. Its extended reach allows access to recessed areas where standard taps cannot reach, making it ideal for maintenance, repair, and production environments requiring UNC threads.
What are the specifications of the CHICAGO-LATROBE Extension Tap 5/8"-11 UNC?
This tap has a 5/8"-11 UNC thread size, H11 tolerance, 3 flutes, plug chamfer, and black oxide high-speed steel construction. The manufacturer part number is 313604. It is designed for threading blind holes with a spiral-point geometry that pushes chips forward.
Where to buy CHICAGO-LATROBE Extension Tap 5/8"-11 UNC worldwide?
You can source this CHICAGO-LATROBE extension tap from 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to worldwide destinations. Contact us for availability and lead time on this item.
How to select the correct extension tap for threading applications?
Select an extension tap based on thread size (e.g., 5/8"-11 UNC), material compatibility (high-speed steel for general use), chamfer type (plug for blind holes), and flute count (3 flutes balance chip evacuation and strength). Ensure the tap's reach matches your hole depth.
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Common applications for CHICAGO-LATROBECHICAGO-LATROBE Products
3G Electric supplies CHICAGO-LATROBE spiral-point extension taps. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.















