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CHICAGO-LATROBE Pipe and Conduit Thread Tap: 3/8"-18 NPS, 4 Flute, Semi-Bottoming Chamfer (MPN 387139) - General Purpose Pipe Taps
CHICAGO-LATROBEGeneral Purpose Pipe Taps

CHICAGO-LATROBE Pipe and Conduit Thread Tap: 3/8"-18 NPS, 4 Flute, Semi-Bottoming Chamfer (MPN 387139)

The CHICAGO-LATROBE 387139 is a General Purpose Pipe Tap with a 3/8"-18 NPS thread, featuring a Semi-Bottoming Chamfer and 4 flutes (MPN 387139). 3G Electric interprets this demand and sources the exact OEM part…

SKU 3G-OTH-266132

Brand
CHICAGO-LATROBE
Item
Pipe and Conduit Thread Tap: 3/8"-18 NPS, 4 Flute, Semi-Bottoming Chamfer
Category
General Purpose Pipe Taps
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Worldwide DHL shipping from Singapore; 7–14 business days door-to-door for most destinations.
Payment
Invoicing in USD. Bank transfer (SWIFT) and corporate PO accepted.

Technical Specifications

CHICAGO-LATROBE
Manufacturer Part Number
387139
Type
Semi-Bottoming Chamfer
Flute
4

Technical Documents

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

Product Description

The CHICAGO-LATROBE 387139 is a General Purpose Pipe Tap with a 3/8"-18 NPS thread, featuring a Semi-Bottoming Chamfer and 4 flutes (MPN 387139). 3G Electric interprets this demand and sources the exact OEM part, backed by specialist expertise across 14 industrial departments — including combustion, pumps, and controls — to ensure you get the right solution, not just a catalog.

Frequently Asked Questions

What is the CHICAGO-LATROBE 387139 pipe tap used for?

The CHICAGO-LATROBE 387139 is a general-purpose pipe tap used to cut internal threads in pipe and conduit fittings. Its 3/8"-18 NPS size and semi-bottoming chamfer make it suitable for threading close to the bottom of blind holes in plumbing, electrical conduit, and industrial piping systems.

What are the specifications of the CHICAGO-LATROBE 387139 pipe tap?

The CHICAGO-LATROBE 387139 is a 3/8"-18 NPS pipe tap with a semi-bottoming chamfer and 4 flutes. It is designed for general-purpose threading of pipe and conduit. The manufacturer part number is 387139, and it is made by CHICAGO-LATROBE.

Where to buy CHICAGO-LATROBE 387139 pipe taps worldwide?

You can source the CHICAGO-LATROBE 387139 pipe tap through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to worldwide destinations. Contact us for availability and lead times on this and other CHICAGO-LATROBE threading tools.

How to select the right chamfer type for a pipe tap?

For threading blind holes, choose a semi-bottoming chamfer like the CHICAGO-LATROBE 387139 to cut threads close to the hole bottom. For through holes, a taper chamfer is easier to start. Always match the tap size (3/8"-18 NPS) to the pipe or conduit thread standard for proper fit.

Used in

Common applications for CHICAGO-LATROBE
Aerospace assembly — Chicago-Latrobe NAS 907 Type B aircraft-extension drill bits for drilling fastener holes in aluminum and titanium skins.
Metal fabrication — Chicago-Latrobe reduced-shank drill bit sets for enlarging holes in structural steel using magnetic drill presses.
Maintenance repair — Chicago-Latrobe left-hand cobalt jobber-length drill bits for removing broken bolts in machinery.
Tool and die making — Chicago-Latrobe jobber-length drill bit sets with 135° split point for precision hole drilling in hardened steels.
Automotive repair — Chicago-Latrobe spiral-flute screw extractors for removing seized fasteners in engine blocks or exhaust systems.
General manufacturing — Chicago-Latrobe HSS jobber-length drill bits for production drilling in mild steel and cast iron.

CHICAGO-LATROBE Products

3G Electric supplies CHICAGO-LATROBE general purpose 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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Compatible alternatives & equivalents

Cross-referenced by specification & description
CHICAGO-LATROBE Pipe and Conduit Thread Tap: 1/4"-18 NPS, 4 Flute, Semi-Bottoming Chamfer (MPN 387121)
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CHICAGO-LATROBE Pipe and Conduit Thread Tap: 1/4"-18 NPS, 4 Flute, Semi-Bottoming Chamfer (MPN 387121)
CHICAGO-LATROBE Pipe and Conduit Thread Tap: 1/4"-18 NPSF, 4 Flute, Semi-Bottoming Chamfer (MPN 387238)
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CHICAGO-LATROBE Pipe and Conduit Thread Tap: 1/4"-18 NPSF, 4 Flute, Semi-Bottoming Chamfer (MPN 387238)
CHICAGO-LATROBE Pipe and Conduit Thread Tap: 3/8"-18 NPTF, 4 Flute, Semi-Bottoming Chamfer (MPN 385444)
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CHICAGO-LATROBE Pipe and Conduit Thread Tap: 3/8"-18 NPTF, 4 Flute, Semi-Bottoming Chamfer (MPN 385444)
CHICAGO-LATROBE Pipe and Conduit Thread Tap: 1/8"-27 NPSF, 4 Flute, Semi-Bottoming Chamfer (MPN 387220)
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CHICAGO-LATROBE Pipe and Conduit Thread Tap: 1/8"-27 NPSF, 4 Flute, Semi-Bottoming Chamfer (MPN 387220)
CHICAGO-LATROBE Pipe and Conduit Thread Tap: 1/4"-18 NPTF, 4 Flute, Semi-Bottoming Chamfer (MPN 385413)
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CHICAGO-LATROBE Pipe and Conduit Thread Tap: 1/4"-18 NPTF, 4 Flute, Semi-Bottoming Chamfer (MPN 385413)
CHICAGO-LATROBE Pipe and Conduit Thread Tap: 1/4"-18 NPTF, 4 Flute, Semi-Bottoming Chamfer (MPN 385410)
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CHICAGO-LATROBE Pipe and Conduit Thread Tap: 1/4"-18 NPTF, 4 Flute, Semi-Bottoming Chamfer (MPN 385410)

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CHICAGO-LATROBE Pipe and Conduit Thread Tap: 1/8"-27 NPS, 4 Flute, Semi-Bottoming Chamfer (MPN 387113)
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CHICAGO-LATROBE Pipe and Conduit Thread Tap: 3/8"-18 NPTF, 4 Flute, Semi-Bottoming Chamfer (MPN 385448)
CHICAGO-LATROBE Pipe and Conduit Thread Tap: 1/8"-27 NPSF, 4 Flute, Semi-Bottoming Chamfer (MPN 387212)
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