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HELI-COIL Screw Thread Insert STI Tap: Straight Fute, 3/4"-16 UNF, H3 / 3B, 4 Flute - General Purpose STI Taps
HELI-COILGeneral Purpose STI Taps

HELI-COIL Screw Thread Insert STI Tap: Straight Fute, 3/4"-16 UNF, H3 / 3B, 4 Flute

The HELI-COIL Screw Thread Insert STI Tap (Straight Flute) is a general-purpose tap for 3/4"-16 UNF threads, with H3 / 3B tolerance and a plug chamfer. It features 4 flutes and is identified by manufacturer part…

SKU 3G-OTH-262130

Also listed as: 819312 · 8193 12

Brand
HELI-COIL
Item
Screw Thread Insert STI Tap: Straight Fute, 3/4"-16 UNF, H3 / 3B, 4 Flute
Category
General Purpose STI Taps
Available to Order
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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.

Technical Specifications

HELI-COIL
Manufacturer Part Number
8193-12
Type
H3 / 3B, Plug Chamfer
Flute
4
UNF
3/4"-16

Technical Documents

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HELI-COIL Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The HELI-COIL Screw Thread Insert STI Tap (Straight Flute) is a general-purpose tap for 3/4"-16 UNF threads, with H3 / 3B tolerance and a plug chamfer. It features 4 flutes and is identified by manufacturer part number 8193-12.

Frequently Asked Questions

What is a HELI-COIL Screw Thread Insert STI Tap used for?

A HELI-COIL Screw Thread Insert STI Tap is used to cut internal threads for installing Heli-Coil wire thread inserts. 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 8193-12?

The HELI-COIL STI Tap 8193-12 is a general-purpose tap with 3/4"-16 UNF thread, H3 / 3B tolerance, 4 flutes, and a plug chamfer. It is designed for straight-flute cutting and is made by Heli-Coil, a brand we supply globally.

Where to buy HELI-COIL STI Tap 8193-12 worldwide?

You can order the HELI-COIL STI Tap 8193-12 from 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to worldwide destinations, ensuring you receive the correct tap for your application.

How to select the correct HELI-COIL STI Tap for thread repair?

To select the correct HELI-COIL STI Tap, match the tap's thread size and pitch to the insert you plan to install. For the 8193-12, use it with 3/4"-16 UNF Heli-Coil inserts. Always verify the tap tolerance (H3/3B) matches your required thread class for proper fit.

Used in

Common applications for HELI-COIL
Aerospace engine repair — HELI-COIL STI taps for M12x1.75 metric threads in aluminum alloy components
Automotive transmission rebuild — HELI-COIL STI taps for 7/16-14 UNC threads in cast iron housings
Industrial pump maintenance — HELI-COIL STI taps for #10-32 UNF threads in stainless steel pump bodies
Hydraulic cylinder repair — HELI-COIL STI taps for M6x1 metric threads in steel cylinder heads
General manufacturing — HELI-COIL STI taps for 9/16-18 UNF threads in machinery base plates

HELI-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.

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Compatible alternatives & equivalents

Cross-referenced by specification & description
HELI-COIL Screw Thread Insert STI Tap: Straight Fute, 3/4"-10 UNC, H3 / 3B, 4 Flute, Plug Chamfer (MPN 8187-12)
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HELI-COIL Screw Thread Insert STI Tap: Straight Fute, 9/16"-18 UNF, H3 / 3B, 4 Flute, Plug Chamfer (MPN 38193-9)
HELI-COIL Screw Thread Insert STI Tap: Straight Fute, 7/8"-14 UNF, H3 / 3B, 4 Flute, Plug Chamfer (MPN 8193-14)
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HELI-COIL Screw Thread Insert STI Tap: Straight Fute, 7/8"-14 UNF, H3 / 3B, 4 Flute, Plug Chamfer (MPN 8193-14)

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