HELI-COIL Screw Thread Insert STI Tap: Straight Fute, M20x2.5 Metric, H4 / 4H, 4 Flute
The HELI-COIL Screw Thread Insert STI Tap: Straight Flute is a general-purpose STI tap designed for creating threads for HELI-COIL screw thread inserts. This M20x2.5 Metric tap features a 4-flute design with a plug…
SKU 3G-OTH-261989
Also listed as: 468720 · 4687 20
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 STI tap designed for creating threads for HELI-COIL screw thread inserts. This M20x2.5 Metric tap features a 4-flute design with a plug chamfer and is rated H4 / 4H (MPN 4687-20).
Frequently Asked Questions
What is the HELI-COIL Screw Thread Insert STI Tap used for?
This tap is used to create internal threads in metal or plastic for installing HELI-COIL screw thread inserts. It is a general-purpose tool for repair or production work where a strong, wear-resistant thread is needed, commonly in automotive, aerospace, and industrial maintenance applications.
What are the specifications of the HELI-COIL STI Tap 4687-20?
The tap is M20x2.5 Metric with a straight flute, 4-flute design, and plug chamfer. It is rated H4 / 4H for thread class tolerance. The manufacturer part number is 4687-20, and it is made by HELI-COIL. It is designed specifically for use with HELI-COIL screw thread inserts.
Where to buy HELI-COIL STI Tap 4687-20 worldwide?
3G Electric supplies the HELI-COIL STI Tap 4687-20 to customers worldwide. We handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time. As a global industrial distributor, we source and deliver this tap to support your thread repair or production needs.
How to select the correct HELI-COIL STI Tap for M20x2.5 inserts?
Select a tap marked for the same thread size and pitch as the insert, here M20x2.5. Use an STI tap (not a standard tap) because it is oversized to accommodate the insert. The H4 / 4H tolerance ensures proper fit. Always match the tap to the HELI-COIL insert part number for reliable thread strength.
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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.
