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HELI-COIL 4CPB General Purpose STI Tap - General Purpose STI Taps
HELI-COILGeneral Purpose STI Taps

HELI-COIL 4CPB General Purpose STI Tap

The HELI-COIL Screw Thread Insert STI Tap (Straight Flute) is a general-purpose tap designed for 1/4"-20 UNC threads, with an H2 / 3B tolerance, 3 flutes, and a plug chamfer (MPN 4CPB). 3G Electric interprets this…

SKU 3G-OTH-262026

Also listed as: 4 CPB · 4-CPB

Brand
HELI-COIL
Item
4CPB General Purpose STI Tap
Category
General Purpose STI Taps
Available to Order
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Technical specs
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Local availability & support — the Philippines

Delivery
5–8 business days door-to-door; Bureau of Customs clearance typically 2–4 business days.
Payment
Invoicing in PHP or USD. Bank transfer and corporate PO accepted.
Ships to
Manila, Quezon City, Cebu, Davao, Batangas

Technical Specifications

HELI-COIL
Manufacturer Part Number
4CPB
Type
H2 / 3B, Plug Chamfer
Flute
3
UNC
1/4"-20

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) is a general-purpose tap designed for 1/4"-20 UNC threads, with an H2 / 3B tolerance, 3 flutes, and a plug chamfer (MPN 4CPB). 3G Electric interprets this demand and sources the correct OEM tool, backed by specialist expertise across 14 industrial departments — and far more — to ensure you get the right answer, not just a catalog.

Supplied to the Philippines — compatible with 60 Hz installations. DHL Express delivery to Manila, Quezon City, Cebu, customs and duties handled door-to-door.

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 commonly applied in automotive, aerospace, and industrial maintenance to repair or reinforce stripped threads in metal components, ensuring strong, reusable threads.

What are the specifications of the HELI-COIL 4CPB STI Tap?

The HELI-COIL 4CPB STI Tap is a general-purpose tap with a 1/4"-20 UNC thread size, H2 / 3B tolerance, 3 flutes, and a plug chamfer. It is designed for straight flute operation and is made by HELI-COIL, a trusted brand in thread repair.

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, ensuring a seamless procurement process for this and other thread repair tools.

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

To select the correct HELI-COIL STI Tap, match the tap's thread size and pitch to the insert you plan to install. For example, the 4CPB tap fits 1/4"-20 UNC inserts. Always verify the tap's tolerance class (e.g., H2 / 3B) matches your application's thread class requirements for proper fit.

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
HELI-COIL Screw Thread Insert STI Tap: Straight Fute, 1/2"-13 UNC, H3 / 3B, 4 Flute, Plug Chamfer (MPN 8CPB)
HELI-COIL
HELI-COIL Screw Thread Insert STI Tap: Straight Fute, 1/2"-13 UNC, H3 / 3B, 4 Flute, Plug Chamfer (MPN 8CPB)
This STI tap is designed for cutting internal threads to accept HELI-COIL screw thread inserts. It features a 1/2"-20 UNC thread size, H3 / 3B tolerance, 4 straight flutes, and a plug chamfer. Suitable for general-purpose thread repair and reinforcement in metal components
HELI-COIL
This STI tap is designed for cutting internal threads to accept HELI-COIL screw thread inserts. It features a 1/2"-20 UNC thread size, H3 / 3B tolerance, 4 straight flutes, and a plug chamfer. Suitable for general-purpose thread repair and reinforcement in metal components
HELI-COIL Screw Thread Insert STI Tap: Straight Fute, 3/8"-16 UNC, H3 / 3B, 4 Flute, Plug Chamfer (MPN 6CPB)
HELI-COIL
HELI-COIL Screw Thread Insert STI Tap: Straight Fute, 3/8"-16 UNC, H3 / 3B, 4 Flute, Plug Chamfer (MPN 6CPB)
HELI-COIL Screw Thread Insert STI Tap: Straight Fute, 5/16"-18 UNC, H3 / 3B, 4 Flute, Plug Chamfer (MPN 5CPB)
HELI-COIL
HELI-COIL Screw Thread Insert STI Tap: Straight Fute, 5/16"-18 UNC, H3 / 3B, 4 Flute, Plug Chamfer (MPN 5CPB)
HELI-COIL Screw Thread Insert STI Tap: Straight Fute, 3/8"-24 UNF, H2 / 3B, 4 Flute, Plug Chamfer (MPN 6FPB)
HELI-COIL
HELI-COIL Screw Thread Insert STI Tap: Straight Fute, 3/8"-24 UNF, H2 / 3B, 4 Flute, Plug Chamfer (MPN 6FPB)
HELI-COIL Screw Thread Insert STI Tap: Straight Fute, 1 1/4"-12 UNF, H4 / 3B, 6 Flute, Plug Chamfer (MPN 8193-20)
HELI-COIL
HELI-COIL Screw Thread Insert STI Tap: Straight Fute, 1 1/4"-12 UNF, H4 / 3B, 6 Flute, Plug Chamfer (MPN 8193-20)

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General purpose STI tap for cutting internal threads to accept M6x1 metric screw thread inserts. Features a D3 / 5H tolerance, plug chamfer, and three straight flutes for effective chip evacuation in through-hole or blind-hole applications
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