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HELI-COIL Screw Thread Insert STI Tap: Straight Fute, #4-40 UNC, H1 / 3B, 3 Flute - General Purpose STI Taps
HELI-COILGeneral Purpose STI Taps

HELI-COIL Screw Thread Insert STI Tap: Straight Fute, #4-40 UNC, H1 / 3B, 3 Flute

The HELI-COIL Screw Thread Insert STI Tap (Straight Flute, MPN 04CPB) is a #4-40 UNC, H1 / 3B, Plug Chamfer tap with 3 flutes, designed for installing HELI-COIL screw thread inserts. 3G Electric interprets customer…

SKU 3G-OTH-262159

Also listed as: 04 CPB · 04-CPB

Brand
HELI-COIL
Item
Screw Thread Insert STI Tap: Straight Fute, #4-40 UNC, H1 / 3B, 3 Flute
Category
General Purpose STI Taps
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Local availability & support

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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

HELI-COIL
Manufacturer Part Number
04CPB
Type
#4-40 UNC, H1 / 3B, Plug Chamfer
Flute
3

Technical Documents

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HELI-COIL Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The HELI-COIL Screw Thread Insert STI Tap (Straight Flute, MPN 04CPB) is a #4-40 UNC, H1 / 3B, Plug Chamfer tap with 3 flutes, designed for installing HELI-COIL screw thread inserts. 3G Electric interprets customer demand and delivers this genuine industrial tap across 14 departments — and far more — with specialist depth in combustion, pumps and controls as an authorised distributor for brands including Schneider, ABB, Siemens, SKF, Festo, Fluke, Interpump and FBR.

Frequently Asked Questions

What is a HELI-COIL Screw Thread Insert STI Tap used for?

A HELI-COIL STI Tap is used to cut internal threads for installing Heli-Coil screw thread inserts. It is designed for general-purpose thread repair in metal components, commonly used in automotive, aerospace, and industrial maintenance applications.

What are the specifications of the HELI-COIL 04CPB STI Tap?

The HELI-COIL 04CPB STI Tap is a straight flute, general-purpose tap with a #4-40 UNC thread size, H1 / 3B tolerance, 3 flutes, and a plug chamfer. It is designed for cutting threads to accept Heli-Coil inserts.

Where to buy HELI-COIL STI Taps worldwide?

You can source HELI-COIL STI Taps worldwide through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time.

How to select the correct HELI-COIL STI Tap for thread repair?

Select a HELI-COIL STI Tap that matches the thread size and pitch of the insert you are installing. For example, the 04CPB is for #4-40 UNC inserts. Ensure the tap has the correct tolerance (H1/3B) and chamfer type (plug) for your application.

Used in

Common applications for HELI-COIL
Aerospace engine repair — HELI-COIL STI taps for M12x1.75 metric threads in aluminum alloy components
Automotive transmission rebuild — HELI-COIL STI taps for 7/16-14 UNC threads in cast iron housings
Industrial pump maintenance — HELI-COIL STI taps for #10-32 UNF threads in stainless steel pump bodies
Hydraulic cylinder repair — HELI-COIL STI taps for M6x1 metric threads in steel cylinder heads
General manufacturing — HELI-COIL STI taps for 9/16-18 UNF threads in machinery base plates

HELI-COIL Products

3G Electric supplies HELI-COIL general purpose sti 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
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