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3G Electric
CHICAGO-LATROBE 3/8"-18 NPTF Semi-Bottoming Chamfer Extension Pipe Tap - Extension Pipe Taps
CHICAGO-LATROBEExtension Pipe Taps

CHICAGO-LATROBE 3/8"-18 NPTF Semi-Bottoming Chamfer Extension Pipe Tap

The CHICAGO-LATROBE Extension Tap (SKU 3G-OTH-313248) is a 3/8"-18 NPTF extension pipe tap with a semi-bottoming chamfer, 4 flutes, and high-speed steel construction (MPN 386040). 3G Electric interprets this demand…

SKU 3G-OTH-313248

Brand
CHICAGO-LATROBE
Item
3/8"-18 NPTF Semi-Bottoming Chamfer Extension Pipe Tap
Part Number
386040
Category
Extension Pipe Taps
Available to Order
Also known as:386040CHICAGO-LATROBE
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Local availability & support — Singapore

Local office
20 Woodlands Link #09-05, Singapore 738733
Phone
+65 8878 8355
Payment
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Technical Specifications

CHICAGO-LATROBE
Manufacturer Part Number
386040
Type
Semi-Bottoming Chamfer, High Speed Steel
Flute
4

Technical Documents

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

Product Description

The CHICAGO-LATROBE Extension Tap (SKU 3G-OTH-313248) is a 3/8"-18 NPTF extension pipe tap with a semi-bottoming chamfer, 4 flutes, and high-speed steel construction (MPN 386040). 3G Electric interprets this demand and sources the genuine OEM part, supporting your industrial threading needs across 14 departments — with specialist depth in combustion, pumps, and controls.

Frequently Asked Questions

What is a CHICAGO-LATROBE Extension Tap used for?

A CHICAGO-LATROBE Extension Tap is used to cut internal NPTF threads in hard-to-reach or deep-hole applications. It is ideal for plumbing, hydraulic, and pneumatic systems where standard taps cannot reach. The semi-bottoming chamfer allows threading close to the bottom of a blind hole.

What are the specifications of the CHICAGO-LATROBE Extension Tap 386040?

The CHICAGO-LATROBE Extension Tap 386040 has a 3/8"-18 NPTF thread, 4 flutes, and a semi-bottoming chamfer. It is made from high-speed steel (HSS) for durability. This extension tap is designed for threading pipe fittings in confined spaces.

Where to buy CHICAGO-LATROBE Extension Tap 386040 worldwide?

3G Electric supplies the CHICAGO-LATROBE Extension Tap 386040 to customers worldwide. We handle full logistics, customs clearance, and delivery to your site. Contact us for pricing and lead time on this and other industrial cutting tools across 14 departments.

How to select the right extension tap for NPTF threads?

Select an extension tap like the CHICAGO-LATROBE 386040 based on thread size (3/8"-18 NPTF), chamfer type (semi-bottoming for blind holes), and material (HSS for general use). Ensure the tap length reaches the threading depth. For application advice, consult 3G Electric's specialists.

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 extension pipe taps. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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Extension pipe tap for cutting internal NPT threads in hard-to-reach or deep-hole applications. Made from high-speed steel with 4 flutes and a semi-bottoming chamfer. Suitable for threading in confined spaces such as pipe fittings or manifolds
CHICAGO-LATROBE
Extension pipe tap for cutting internal NPT threads in hard-to-reach or deep-hole applications. Made from high-speed steel with 4 flutes and a semi-bottoming chamfer. Suitable for threading in confined spaces such as pipe fittings or manifolds

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