Send a part number, a photo, or a whole BOM — we supply it and stand behind it. EXW Singapore — collect from our office.

3G Electric
CHICAGO-LATROBE 1/8"-27 NPTF Extension Pipe Tap, 4 Flute, Semi-Bottoming Chamfer - Extension Pipe Taps
CHICAGO-LATROBEExtension Pipe Taps

CHICAGO-LATROBE 1/8"-27 NPTF Extension Pipe Tap, 4 Flute, Semi-Bottoming Chamfer

CHICAGO-LATROBE Extension Pipe Taps.

SKU 3G-OTH-313252

Brand
CHICAGO-LATROBE
Item
1/8"-27 NPTF Extension Pipe Tap, 4 Flute, Semi-Bottoming Chamfer
Part Number
386129
Category
Extension Pipe Taps
Available to Order
Also known as:386129CHICAGO-LATROBE
Trade pricing by quote — replies within 24h
Qty
WhatsApp an engineerMessage via Telegram
No account needed — your quote request goes straight to our engineers. A free account lets you track quotes and re-order faster.
EXW Singapore
Collect or forward from our office
Datasheet on Request
Technical specs
1-Day Quote
Replies within 24h

Local availability & support — Singapore

Local office
20 Woodlands Link #09-05, Singapore 738733
Phone
+65 8878 8355
Payment
Invoicing in SGD. PayNow, bank transfer, and corporate PO accepted.

Technical Specifications

CHICAGO-LATROBE
Manufacturer Part Number
386129

Technical Documents

No technical documents available for this product.
Request documentation →
Not sure this is the right part? Get a recommendation.

Need installation or engineering help?

Installation, commissioning, maintenance plans, system design, and bundled product + service quotes — one team handles the full scope.
Talk to an engineer

Ask a question

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

Product Description

CHICAGO-LATROBE Extension Pipe Taps.

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. The extended shank allows threading in confined spaces, such as pipe fittings or manifolds, where standard taps cannot reach. It is common in plumbing, hydraulic, and pneumatic systems.

What are the specifications of the CHICAGO-LATROBE 386129 extension tap?

The CHICAGO-LATROBE 386129 extension tap has a 1/8"-27 NPTF thread size, 4 flutes, and a semi-bottoming chamfer. It is designed for threading tapered pipe threads in steel, stainless steel, and other metals. The extension shank provides reach for deep or obstructed holes.

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 386129 model. We source genuine CHICAGO-LATROBE tooling for industrial maintenance and production.

How to select the right extension tap for NPTF threads?

Select an extension tap like the CHICAGO-LATROBE 386129 by matching thread size (1/8"-27 NPTF), chamfer type (semi-bottoming for blind holes), and flute count (4 flutes for chip clearance). Ensure the shank length reaches the threading depth. Use cutting fluid for steel and reduce speed for harder materials.

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.
Not sure this is the right part? Photo-identify it→

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.

You might also need

Burners & Combustion →Pumps & Compressors →Spare Parts →All Products →

More from CHICAGO-LATROBE

View all CHICAGO-LATROBE parts →
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

Customer reviews

No reviews yet — be the first

Questions & answers

No questions yet — ask us the first