CHICAGO-LATROBE Extension Tap: 5/16"-18 UNC, H11, 3 Flute, Plug Chamfer, High Speed Steel (MPN 313545)
SKU 3G-OTH-313557
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Frequently Asked Questions
What is a CHICAGO-LATROBE extension tap used for?
A CHICAGO-LATROBE extension tap is used for threading blind or deep holes where standard taps cannot reach. It is common in machining, automotive, and general manufacturing applications requiring precise internal threads in hard-to-access locations.
What are the specifications of the CHICAGO-LATROBE 313545 extension tap?
The CHICAGO-LATROBE 313545 is a 5/16"-18 UNC extension tap with H11 tolerance, 3 flutes, plug chamfer, and high-speed steel construction. It is designed for threading blind holes and provides good chip evacuation in ferrous and non-ferrous materials.
Where to buy CHICAGO-LATROBE extension taps worldwide?
3G Electric supplies CHICAGO-LATROBE extension taps worldwide. As a global industrial solutions provider, we handle full logistics, customs clearance, and delivery to your facility. Contact us for pricing and lead time on the 313545 model.
How to select the right extension tap for deep hole threading?
Select an extension tap based on thread size, pitch, material, and hole depth. For blind holes, use a plug or bottoming chamfer. The CHICAGO-LATROBE 313545 with H11 tolerance suits general-purpose threading. Ensure the tap length exceeds the hole depth for proper engagement.
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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.















