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HELI-COIL Screw Thread Insert STI Tap: Straight Fute, 1 3/8"-12 UNF, H4 / 3B, 6 Flute - General Purpose STI Taps
HELI-COILGeneral Purpose STI Taps

HELI-COIL Screw Thread Insert STI Tap: Straight Fute, 1 3/8"-12 UNF, H4 / 3B, 6 Flute

The HELI-COIL Screw Thread Insert STI Tap (Straight Flute) is a general-purpose STI tap with a 1 3/8"-12 UNF thread, H4 / 3B tolerance, 6 flutes, and a plug chamfer (MPN 8193-22). 3G Electric interprets this demand…

SKU 3G-OTH-262125

Also listed as: 819322 · 8193 22

Brand
HELI-COIL
Item
Screw Thread Insert STI Tap: Straight Fute, 1 3/8"-12 UNF, H4 / 3B, 6 Flute
Category
General Purpose STI Taps
Available to Order
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Local availability & support — Singapore

Local office
20 Woodlands Link #09-05, Singapore 738733
Phone
+65 8878 8355
Delivery
Same-day or next-business-day delivery within Singapore for in-stock items; 7–14 days for factory-order parts from Europe.
Payment
Invoicing in SGD. PayNow, bank transfer, and corporate PO accepted.
Ships to
Singapore

Technical Specifications

HELI-COIL
Manufacturer Part Number
8193-22
Type
H4 / 3B, Plug Chamfer
Flute
6
UNF
1 3/8"-12

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 STI tap with a 1 3/8"-12 UNF thread, H4 / 3B tolerance, 6 flutes, and a plug chamfer (MPN 8193-22). 3G Electric interprets this demand and sources the genuine OEM product, backed by specialist expertise across 14 industrial departments.

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 8193-22?

This STI tap has a UNF thread size of 1 3/8"-12, with a tolerance of H4 / 3B and a plug chamfer. It features 6 straight flutes and is manufactured by HELI-COIL under part number 8193-22. It is designed for cutting threads to accept HELI-COIL inserts.

Where to buy HELI-COIL STI Tap 8193-22 worldwide?

3G Electric supplies the HELI-COIL STI Tap 8193-22 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 thread repair?

Select an STI tap that matches the thread size and pitch of the HELI-COIL insert you plan to install. For this tap, use a 1 3/8"-12 UNF insert. Ensure the tap has a plug chamfer for general-purpose threading and the correct tolerance (H4 / 3B) for the desired class of 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, 1"-12 UNF, H4 / 3B, 4 Flute, Plug Chamfer (MPN 8193-161)
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HELI-COIL Screw Thread Insert STI Tap: Straight Fute, 1"-12 UNF, H4 / 3B, 4 Flute, Plug Chamfer (MPN 8193-161)
HELI-COIL Screw Thread Insert STI Tap: Straight Fute, 1 1/2"-12 UNF, H4 / 3B, 6 Flute, Plug Chamfer (MPN 8193-24)
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HELI-COIL Screw Thread Insert STI Tap: Straight Fute, 1 1/2"-12 UNF, H4 / 3B, 6 Flute, Plug Chamfer (MPN 8193-24)
HELI-COIL Screw Thread Insert STI Tap: Straight Fute, 1"-14 UNF, H4 / 3B, 4 Flute, Plug Chamfer (MPN 8193-16)
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HELI-COIL Screw Thread Insert STI Tap: Straight Fute, 1"-14 UNF, H4 / 3B, 4 Flute, Plug Chamfer (MPN 8193-16)
HELI-COIL Screw Thread Insert STI Tap: Straight Fute, 1 1/8"-12 UNF, H4 / 3B, 6 Flute, Plug Chamfer (MPN 8193-18)
HELI-COIL
HELI-COIL Screw Thread Insert STI Tap: Straight Fute, 1 1/8"-12 UNF, H4 / 3B, 6 Flute, Plug Chamfer (MPN 8193-18)
HELI-COIL Screw Thread Insert STI Tap: Straight Fute, 1 1/4"-12 UNF, H4 / 3B, 6 Flute, Plug Chamfer (MPN 8193-20)
HELI-COIL
HELI-COIL Screw Thread Insert STI Tap: Straight Fute, 1 1/4"-12 UNF, H4 / 3B, 6 Flute, Plug Chamfer (MPN 8193-20)
HELI-COIL Screw Thread Insert STI Tap: Straight Fute, 1 1/8"-7 UNC, H4 / 3B, 4 Flute, Plug Chamfer (MPN 8187-18)
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HELI-COIL Screw Thread Insert STI Tap: Straight Fute, 1 1/8"-7 UNC, H4 / 3B, 4 Flute, Plug Chamfer (MPN 8187-18)

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