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HELI-COIL Screw Thread Insert STI Tap: Straight Fute, M3x0.5 Metric, D1 / 4H, 3 Flute - General Purpose STI Taps
HELI-COILGeneral Purpose STI Taps

HELI-COIL Screw Thread Insert STI Tap: Straight Fute, M3x0.5 Metric, D1 / 4H, 3 Flute

The HELI-COIL Screw Thread Insert STI Tap: Straight Flute is a general-purpose STI tap designed for M3x0.5 metric threads. It features a D1 / 4H tolerance, 3 flutes, and a plug chamfer, with manufacturer part number…

SKU 3G-OTH-262085

Also listed as: 46873 · 4687 3

Brand
HELI-COIL
Item
Screw Thread Insert STI Tap: Straight Fute, M3x0.5 Metric, D1 / 4H, 3 Flute
Category
General Purpose STI Taps
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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
4687-3
Type
M3x0.5 Metric, D1 / 4H, Plug Chamfer
Flute
3

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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 designed for M3x0.5 metric threads. It features a D1 / 4H tolerance, 3 flutes, and a plug chamfer, with manufacturer part number 4687-3.

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 tapping in metal components, commonly used in automotive, aerospace, and industrial repair applications to restore or reinforce threaded holes.

What are the specifications of the HELI-COIL STI Tap 4687-3?

The HELI-COIL STI Tap 4687-3 has an M3x0.5 metric thread size, D1 / 4H tolerance, 3 flutes, and a plug chamfer. It is a straight-flute, general-purpose tap manufactured by HELI-COIL. The D1 / 4H tolerance ensures precise thread fit for standard insert installation.

Where to buy HELI-COIL STI Tap 4687-3 worldwide?

You can source the HELI-COIL STI Tap 4687-3 through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to worldwide destinations. Contact us for availability and lead time on this HELI-COIL tap.

How to select the correct HELI-COIL STI Tap for M3 threads?

To select the correct HELI-COIL STI Tap for M3 threads, ensure the tap matches the insert's thread size (M3x0.5) and tolerance class (D1 / 4H). Use a plug chamfer tap for through holes or blind holes with sufficient depth. Always refer to the HELI-COIL installation guidelines for proper tap selection.

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, M2.5x0.45 Metric, D1 / 4H, 3 Flute (MPN 4687-2.5)
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HELI-COIL Screw Thread Insert STI Tap: Straight Fute, M2.5x0.45 Metric, D1 / 4H, 3 Flute (MPN 4687-2.5)
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HELI-COIL Screw Thread Insert STI Tap: Straight Fute, M3x0.5 Metric, D2 / 5H, 3 Flute, Plug Chamfer (MPN 2087-3)
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HELI-COIL Screw Thread Insert STI Tap: Straight Fute, M3x0.5 Metric, D2 / 5H, 3 Flute, Plug Chamfer (MPN 2087-3)
HELI-COIL Screw Thread Insert STI Tap: Straight Fute, M4x0.7 Metric, D6 / 5H, 3 Flute, Plug Chamfer (MPN 2087-4)
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HELI-COIL Screw Thread Insert STI Tap: Straight Fute, M4x0.7 Metric, D6 / 5H, 3 Flute, Plug Chamfer (MPN 2087-4)
HELI-COIL Screw Thread Insert STI Tap: Straight Fute, M6x1 Metric, H2 / 4H, 3 Flute, Plug Chamfer (MPN 4687-6)
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HELI-COIL Screw Thread Insert STI Tap: Straight Fute, M6x1 Metric, H2 / 4H, 3 Flute, Plug Chamfer (MPN 4687-6)

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