HELI-COIL Screw Thread Insert STI Tap: Straight Fute, 1 1/4"-12 UNF, H4 / 3B, 6 Flute
The HELI-COIL Screw Thread Insert STI Tap (Straight Flute, MPN 8193-20) is a general-purpose STI tap with a 1 1/4"-12 UNF thread, H4 / 3B tolerance, 6 flutes, and a plug chamfer. 3G Electric interprets demand and…
SKU 3G-OTH-262067
Also listed as: 819320 · 8193 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.
Need installation or engineering help?
Ask a question
Product Description
The HELI-COIL Screw Thread Insert STI Tap (Straight Flute, MPN 8193-20) is a general-purpose STI tap with a 1 1/4"-12 UNF thread, H4 / 3B tolerance, 6 flutes, and a plug chamfer. 3G Electric interprets demand and delivers this genuine industrial tap across 14 departments — with specialist depth in combustion, pumps, and controls as an authorised distributor.
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 in a pre-drilled hole before installing a HELI-COIL screw thread insert. It is commonly applied in automotive, aerospace, and industrial maintenance to repair or reinforce stripped threads in metal components.
What are the specifications of the HELI-COIL STI Tap 8193-20?
The HELI-COIL STI Tap 8193-20 is a general-purpose tap with a 1 1/4"-12 UNF thread, H4 / 3B tolerance, plug chamfer, and 6 straight flutes. It is designed for use with HELI-COIL screw thread inserts to produce threads that accept the insert.
Where to buy HELI-COIL STI Tap 8193-20 worldwide?
3G Electric supplies the HELI-COIL STI Tap 8193-20 worldwide. As a global industrial equipment distributor, we handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time.
How to select the correct HELI-COIL STI Tap for a repair job?
Select a HELI-COIL STI Tap that matches the thread size and pitch of the original fastener, such as 1 1/4"-12 UNF. Ensure the tap tolerance (e.g., H4 / 3B) aligns with the insert requirements. Always use the correct tap drill size per HELI-COIL specifications.
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.
