HELI-COIL Screw Thread Insert STI Tap: Straight Fute, 9/16"-12 UNC, H3 / 3B, 4 Flute
The HELI-COIL Screw Thread Insert STI Tap (Straight Flute, MPN 187-9) is a general-purpose tap for 9/16"-12 UNC threads, with H3 / 3B tolerance, 4 flutes, and a plug chamfer. 3G Electric interprets demand and…
SKU 3G-OTH-262041
Also listed as: 1879 · 187 9
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, MPN 187-9) is a general-purpose tap for 9/16"-12 UNC threads, with H3 / 3B tolerance, 4 flutes, and a plug chamfer. 3G Electric interprets demand and delivers this genuine industrial tool across 14 departments — with specialist depth in combustion, pumps and controls as an authorised distributor — ensuring you get the right answer, not just a catalog.
Frequently Asked Questions
What is the HELI-COIL Screw Thread Insert STI Tap used for?
The HELI-COIL STI Tap is used to cut internal threads for installing HELI-COIL screw thread inserts. It is designed for general-purpose thread repair and reinforcement in metal components, commonly used in automotive, aerospace, and industrial maintenance applications.
What are the specifications of the HELI-COIL STI Tap 187-9?
The HELI-COIL STI Tap model 187-9 is a straight flute tap with a 9/16"-12 UNC thread size, H3/3B tolerance, 4 flutes, and a plug chamfer. It is designed for creating threads that accept HELI-COIL inserts, ensuring precise fit and durability.
Where to buy HELI-COIL STI Tap 187-9 worldwide?
You can source the HELI-COIL STI Tap 187-9 through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to worldwide destinations, ensuring reliable supply for your maintenance or production needs.
How to select the correct HELI-COIL STI Tap for thread repair?
Select the HELI-COIL STI Tap based on the thread size and pitch of the insert you need to install. For example, the 187-9 tap matches 9/16"-12 UNC inserts. Always verify the tap tolerance (H3/3B) matches your application requirements for proper thread fit and strength.
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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.
