HELI-COIL Screw Thread Insert STI Tap: Straight Fute, 1/4"-20 UNC, H2 / 3B, 3 Flute
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
Local availability & support
- Delivery
- 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.
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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.
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-COILHELI-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.
