HELI-COIL Screw Thread Insert STI Tap: Straight Fute, M8x1.25 Metric, D9 / 4H, 4 Flute
The HELI-COIL Screw Thread Insert STI Tap is a general-purpose STI tap with a straight flute design. It is an M8x1.25 Metric tap with a D9 / 4H tolerance, 4 flutes, and a plug chamfer (MPN 4687-8).
SKU 3G-OTH-261996
Also listed as: 46878 · 4687 8
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 is a general-purpose STI tap with a straight flute design. It is an M8x1.25 Metric tap with a D9 / 4H tolerance, 4 flutes, and a plug chamfer (MPN 4687-8).
Frequently Asked Questions
What is the HELI-COIL Screw Thread Insert STI Tap used for?
The HELI-COIL Screw Thread Insert STI Tap is used to cut internal threads in a pre-drilled hole before installing a HELI-COIL screw thread insert. It is designed for general-purpose thread repair and reinforcement in metal components across industrial maintenance and manufacturing applications.
What are the specifications of the HELI-COIL STI Tap 4687-8?
The HELI-COIL STI Tap 4687-8 is an M8x1.25 Metric tap with a D9 / 4H tolerance class. It features a straight flute design, 4 flutes, and a plug chamfer. This general-purpose tap is manufactured by HELI-COIL and is suitable for creating threads for M8 helical inserts.
Where to buy HELI-COIL STI Taps worldwide?
3G Electric supplies HELI-COIL STI Taps worldwide. As a global industrial equipment distributor, we handle full logistics, customs clearance, and delivery to your location. Contact us to source the HELI-COIL Screw Thread Insert STI Tap MPN 4687-8 for your thread repair needs.
How to select the correct HELI-COIL STI Tap size?
To select the correct HELI-COIL STI Tap, match the tap size to the insert's thread specification. For an M8x1.25 insert, use the corresponding M8x1.25 STI tap with a D9 / 4H tolerance. Always verify the insert's part number and thread pitch before tapping to ensure proper fit and thread engagement.
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.
