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CHICAGO-LATROBE 5/8"-11 UNC Spiral-Point Extension Tap - Spiral-Point Extension Taps
CHICAGO-LATROBESpiral-Point Extension Taps

CHICAGO-LATROBE 5/8"-11 UNC Spiral-Point Extension Tap

3G Electric supplies the CHICAGO-LATROBE Extension Tap (SKU 3G-OTH-313645), 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).

SKU 3G-OTH-313645

Brand
CHICAGO-LATROBE
Item
5/8"-11 UNC Spiral-Point Extension Tap
Part Number
313604
Category
Spiral-Point Extension Taps
Available to Order
Also known as:313604CHICAGO-LATROBE
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Technical Specifications

CHICAGO-LATROBE
Manufacturer Part Number
313604
Type
H11, Plug Chamfer, Black Oxide High Speed Steel
Flute
3

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CHICAGO-LATROBE Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

3G Electric supplies the CHICAGO-LATROBE Extension Tap (SKU 3G-OTH-313645), 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).

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.

Used in

Common applications for CHICAGO-LATROBE
Aerospace manufacturing — Chicago-Latrobe NAS-spec jobber-length drill bits (e.g., MPN 42631) for drilling holes in airframe components.
Metal fabrication — Chicago-Latrobe single-flute countersinks (e.g., MPN 56774) for deburring and chamfering holes in steel plates.
Machine shop — Chicago-Latrobe 82° countersinks (e.g., MPN 56738) for creating flush-mount recesses for flat-head screws in assemblies.
Maintenance and repair — Chicago-Latrobe 90° countersinks (e.g., MPN 56760) for chamfering holes and removing burrs on industrial equipment.
Automotive production — Chicago-Latrobe HSS drill bits for holemaking in engine blocks and chassis components.
General machining — Chicago-Latrobe countersinks in various body diameters for chamfering and deburring in job shops.
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CHICAGO-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.

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