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HELI-COIL M2.5x0.45 Metric STI Tap, D1 / 4H, 3 Flute (4687-2.5) - General Purpose STI Taps
HELI-COILGeneral Purpose STI Taps

HELI-COIL M2.5x0.45 Metric STI Tap, D1 / 4H, 3 Flute (4687-2.5)

The HELI-COIL Screw Thread Insert STI Tap: Straight Flute is a general-purpose STI tap designed for creating threads for HELI-COIL inserts. This M2.5x0.45 Metric tap features a D1 / 4H tolerance and a 3-flute design…

SKU 3G-OTH-261998

Also listed as: 468725 · 4687 2 5 · 4687-2-5

Brand
HELI-COIL
Item
M2.5x0.45 Metric STI Tap, D1 / 4H, 3 Flute
Part Number
4687-2.5
Category
General Purpose STI Taps
Available to Order
Also known as:4687-2.5HELI-COIL
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Worldwide DHL shipping from Singapore; 7–14 business days door-to-door for most destinations.
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Invoicing in USD. Bank transfer (SWIFT) and corporate PO accepted.

Technical Specifications

HELI-COIL
Manufacturer Part Number
4687-2.5
Type
M2.5x0.45 Metric, D1 / 4H
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 creating threads for HELI-COIL inserts. This M2.5x0.45 Metric tap features a D1 / 4H tolerance and a 3-flute design, with manufacturer part number 4687-2.5.

Frequently Asked Questions

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

The HELI-COIL Screw Thread Insert STI Tap is used to create internal threads for HELI-COIL screw thread inserts. It is a general-purpose tap for industrial applications requiring thread repair or reinforcement in metal components, commonly used in automotive, aerospace, and manufacturing maintenance.

What are the specifications of the HELI-COIL STI Tap 4687-2.5?

The HELI-COIL STI Tap 4687-2.5 is a straight flute tap with M2.5x0.45 metric thread size, D1 / 4H tolerance, and a 3-flute design. It is manufactured by HELI-COIL and is designed for creating threads for HELI-COIL inserts in general-purpose applications.

Where to buy HELI-COIL STI Taps worldwide?

You can source HELI-COIL STI Taps worldwide through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time on the 4687-2.5 tap.

How to select the correct HELI-COIL STI Tap for an insert?

Select the HELI-COIL STI Tap that matches the insert's thread size and tolerance. For example, the 4687-2.5 tap is for M2.5x0.45 metric inserts with D1 / 4H tolerance. Always verify the tap's pitch and diameter against the insert specifications to ensure proper thread formation.

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
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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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