HELI-COIL Screw Thread Insert STI Tap: Straight Fute, 3/4"-10 UNC, H3 / 3B, 4 Flute
The HELI-COIL Screw Thread Insert STI Tap (Straight Flute, MPN 8187-12) is a general-purpose STI tap for 3/4"-10 UNC threads, featuring an H3 / 3B tolerance class, 4 flutes, and a plug chamfer. 3G Electric interprets…
SKU 3G-OTH-262054
Need installation or engineering help?
Ask a question
Product Description
The HELI-COIL Screw Thread Insert STI Tap (Straight Flute, MPN 8187-12) is a general-purpose STI tap for 3/4"-10 UNC threads, featuring an H3 / 3B tolerance class, 4 flutes, and a plug chamfer. 3G Electric interprets this demand and sources the exact OEM-specified tool, backed by specialist expertise across 14 industrial departments — including combustion, pumps, and controls — to ensure you get the right solution, not just a catalog listing.
Frequently Asked Questions
What is the HELI-COIL Screw Thread Insert STI Tap 8187-12 used for?
This STI tap is used to cut internal threads in a workpiece before installing a HELI-COIL screw thread insert. It is designed for general-purpose threading applications, commonly in automotive, aerospace, and industrial maintenance, where a 3/4"-10 UNC thread is required.
What are the specifications of the HELI-COIL STI Tap 8187-12?
The HELI-COIL STI Tap 8187-12 is a straight flute, general-purpose tap with a 3/4"-10 UNC thread size, H3/3B tolerance, 4 flutes, and a plug chamfer. It is designed for cutting threads prior to installing HELI-COIL inserts and is made by HELI-COIL.
Where to buy the HELI-COIL STI Tap 8187-12 worldwide?
You can source the HELI-COIL STI Tap 8187-12 through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to worldwide destinations, ensuring you receive the correct HELI-COIL tap for your threading needs.
How to select the correct HELI-COIL STI Tap for a 3/4"-10 UNC thread?
To select the correct STI tap, match the thread size and pitch to the insert you plan to install. For a 3/4"-10 UNC HELI-COIL insert, use the 8187-12 tap with a 3/4"-10 UNC thread, H3/3B tolerance, and plug chamfer. Always verify the tap is designed for STI (screw thread insert) applications.
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.
