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REGAL CUTTING TOOLS Extension Tap: 1/4"-18 NPTF, 5 Flute, Plug Chamfer - Interrupted-Thread Extension Pipe Taps
REGAL CUTTING TOOLSInterrupted-Thread Extension Pipe Taps

REGAL CUTTING TOOLS Extension Tap: 1/4"-18 NPTF, 5 Flute, Plug Chamfer

The REGAL CUTTING TOOLS Extension Tap is a 1/4"-18 NPTF interrupted-thread extension pipe tap with a plug chamfer, made from high-speed steel and featuring 5 flutes (MPN 015974AS). 3G Electric sources this genuine…

SKU 3G-OTH-309310

Also listed as: 015974 AS · 015974-AS

Brand
REGAL CUTTING TOOLS
Item
Extension Tap: 1/4"-18 NPTF, 5 Flute, Plug Chamfer
Category
Interrupted-Thread Extension Pipe Taps
Available to Order
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Local availability & support — Singapore

Local office
20 Woodlands Link #09-05, Singapore 738733
Phone
+65 8878 8355
Delivery
Same-day or next-business-day delivery within Singapore for in-stock items; 7–14 days for factory-order parts from Europe.
Payment
Invoicing in SGD. PayNow, bank transfer, and corporate PO accepted.
Ships to
Singapore

Technical Specifications

REGAL CUTTING TOOLS
Manufacturer Part Number
015974AS
Type
Plug Chamfer, High Speed Steel
Flute
5

Technical Documents

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REGAL CUTTING TOOLS Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The REGAL CUTTING TOOLS Extension Tap is a 1/4"-18 NPTF interrupted-thread extension pipe tap with a plug chamfer, made from high-speed steel and featuring 5 flutes (MPN 015974AS). 3G Electric sources this genuine industrial cutting tool as part of our broader capability to interpret demand and deliver across 14 industrial departments, with specialist depth in combustion, pumps and controls serving as a trust anchor.

Frequently Asked Questions

What is a Regal Cutting Tools extension tap used for?

A Regal Cutting Tools extension tap is used to cut internal NPTF threads in hard-to-reach or deep-hole applications. The 1/4"-18 NPTF size with plug chamfer and 5-flute design is ideal for creating tapered pipe threads in steel, stainless steel, and other materials where standard taps cannot reach.

What are the specifications of the Regal Cutting Tools 015974AS extension tap?

The Regal Cutting Tools 015974AS is a 1/4"-18 NPTF interrupted-thread extension pipe tap with a plug chamfer, 5 flutes, and is made from high-speed steel. It is designed for threading tapered pipe threads in confined or deep-hole locations, providing chip clearance and reduced torque.

Where to buy Regal Cutting Tools extension taps worldwide?

3G Electric supplies Regal Cutting Tools 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 015974AS or other Regal Cutting Tools taps.

How to select the right extension tap for NPTF threads?

Select an extension tap like the Regal Cutting Tools 015974AS by matching the thread size (1/4"-18 NPTF), chamfer type (plug for general use), and material (high-speed steel for most metals). Ensure the tap length reaches the thread depth required. For interrupted threads, use a tap with chip-breaking flute geometry.

Used in

Common applications for REGAL CUTTING TOOLS
Lead screw manufacturing — Regal Cutting Tools ACME taps (e.g., 1"-5, 2G) for cutting precision threads in power transmission components.
Pulley assembly — Regal Cutting Tools pulley taps (e.g., M10x1.5, D6/6H) for threading set screw holes in sheaves and pulleys.
Maintenance of left-hand thread mechanisms — Regal Cutting Tools left-hand ACME taps (e.g., 1/2"-10 LH) for repairing adjustment screws on industrial equipment.
Blind hole threading — Regal Cutting Tools bottoming chamfer pulley taps (e.g., M3.5x0.6) for creating full threads in closed-end holes.
Metric thread cutting in imported machinery — Regal Cutting Tools metric pulley taps (e.g., M3.5x0.6) for servicing European or Asian equipment.
Unified thread repair — Regal Cutting Tools pulley taps (e.g., #8-32 UNC, H3/2B) for rethreading fastener holes in automotive or industrial components.

REGAL CUTTING TOOLS Products

3G Electric supplies REGAL CUTTING TOOLS interrupted-thread 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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Compatible alternatives & equivalents

Cross-referenced by specification & description
REGAL CUTTING TOOLS Extension Tap: 1/4"-18 NPTF, 4 Flute, Plug Chamfer, High Speed Steel (MPN 015913AS)
REGAL CUTTING TOOLS
REGAL CUTTING TOOLS Extension Tap: 1/4"-18 NPTF, 4 Flute, Plug Chamfer, High Speed Steel (MPN 015913AS)
REGAL CUTTING TOOLS Extension Tap: 5/16"-18 UNC, H3 / 3B, 4 Flute, Plug Chamfer, High Speed Steel (MPN 015131AS)
REGAL CUTTING TOOLS
REGAL CUTTING TOOLS Extension Tap: 5/16"-18 UNC, H3 / 3B, 4 Flute, Plug Chamfer, High Speed Steel (MPN 015131AS)
REGAL CUTTING TOOLS Extension Tap: 3/8"-16 UNC, H3 / 3B, 4 Flute, Plug Chamfer, High Speed Steel (MPN 008868AS)
REGAL CUTTING TOOLS
REGAL CUTTING TOOLS Extension Tap: 3/8"-16 UNC, H3 / 3B, 4 Flute, Plug Chamfer, High Speed Steel (MPN 008868AS)
REGAL CUTTING TOOLS Extension Tap: 1/4"-20 UNC, H3 / 3B, 4 Flute, Plug Chamfer, High Speed Steel (MPN 008862AS)
REGAL CUTTING TOOLS
REGAL CUTTING TOOLS Extension Tap: 1/4"-20 UNC, H3 / 3B, 4 Flute, Plug Chamfer, High Speed Steel (MPN 008862AS)
REGAL CUTTING TOOLS Extension Tap: 1/2"-13 UNC, H3 / 3B, 4 Flute, Plug Chamfer, High Speed Steel (MPN 015146AS)
REGAL CUTTING TOOLS
REGAL CUTTING TOOLS Extension Tap: 1/2"-13 UNC, H3 / 3B, 4 Flute, Plug Chamfer, High Speed Steel (MPN 015146AS)
REGAL CUTTING TOOLS Extension Tap: 3/8"-16 UNC, H3 / 3B, 3 Flute, Plug Chamfer, High Speed Steel (MPN 015141AS)
REGAL CUTTING TOOLS
REGAL CUTTING TOOLS Extension Tap: 3/8"-16 UNC, H3 / 3B, 3 Flute, Plug Chamfer, High Speed Steel (MPN 015141AS)

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REGAL CUTTING TOOLS Extension Tap: 3/8"-18 NPTF, 5 Flute, Plug Chamfer, High Speed Steel (MPN 015977AS)
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REGAL CUTTING TOOLS Extension Tap: 3/8"-18 NPTF, 5 Flute, Plug Chamfer, High Speed Steel (MPN 015977AS)