We ship to the Philippines — door-to-door, customs and logistics handled by 3G Electric

HELI-COIL Screw Thread Insert STI Tap: Straight Fute, M8x1.25 Metric, D9 / 4H, 4 Flute - General Purpose STI Taps
HELI-COILGeneral Purpose STI Taps

HELI-COIL Screw Thread Insert STI Tap: Straight Fute, M8x1.25 Metric, D9 / 4H, 4 Flute

The HELI-COIL Screw Thread Insert STI Tap is a general-purpose STI tap with a straight flute design. It is an M8x1.25 Metric tap with a D9 / 4H tolerance, 4 flutes, and a plug chamfer (MPN 4687-8).

SKU 3G-OTH-261996

Brand
HELI-COIL
Item
Screw Thread Insert STI Tap: Straight Fute, M8x1.25 Metric, D9 / 4H, 4 Flute
Category
General Purpose STI Taps
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Technical Specifications

HELI-COIL
Manufacturer Part Number
4687-8
Type
M8x1.25 Metric, D9 / 4H, Plug Chamfer
Flute
4
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HELI-COIL Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The HELI-COIL Screw Thread Insert STI Tap is a general-purpose STI tap with a straight flute design. It is an M8x1.25 Metric tap with a D9 / 4H tolerance, 4 flutes, and a plug chamfer (MPN 4687-8).

Supplied to the Philippines — compatible with 60 Hz installations. DHL Express delivery to Manila, Quezon City, Cebu, customs and duties handled door-to-door.

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 cut internal threads in a pre-drilled hole before installing a HELI-COIL screw thread insert. It is designed for general-purpose thread repair and reinforcement in metal components across industrial maintenance and manufacturing applications.

What are the specifications of the HELI-COIL STI Tap 4687-8?

The HELI-COIL STI Tap 4687-8 is an M8x1.25 Metric tap with a D9 / 4H tolerance class. It features a straight flute design, 4 flutes, and a plug chamfer. This general-purpose tap is manufactured by HELI-COIL and is suitable for creating threads for M8 helical inserts.

Where to buy HELI-COIL STI Taps worldwide?

3G Electric supplies HELI-COIL STI Taps worldwide. As a global industrial equipment distributor, we handle full logistics, customs clearance, and delivery to your location. Contact us to source the HELI-COIL Screw Thread Insert STI Tap MPN 4687-8 for your thread repair needs.

How to select the correct HELI-COIL STI Tap size?

To select the correct HELI-COIL STI Tap, match the tap size to the insert's thread specification. For an M8x1.25 insert, use the corresponding M8x1.25 STI tap with a D9 / 4H tolerance. Always verify the insert's part number and thread pitch before tapping to ensure proper fit and thread engagement.

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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