OSG M18x2.5 Spiral-Flute Tap, D7 / 4H-6H, 4 Flute, Modified Bottoming Chamfer
The OSG Spiral Flute Tap is a metric M18x2.5 spiral-flute tap for steel and stainless steel, featuring a D7 / 4H-6H tolerance class, 4 flutes, and a modified bottoming chamfer (MPN 1645518257).
SKU 3G-OTH-218685
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
Need installation or engineering help?
Ask a question
Product Description
The OSG Spiral Flute Tap is a metric M18x2.5 spiral-flute tap for steel and stainless steel, featuring a D7 / 4H-6H tolerance class, 4 flutes, and a modified bottoming chamfer (MPN 1645518257).
Frequently Asked Questions
What is the OSG spiral flute tap M18x2.5 used for?
This OSG spiral flute tap is designed for threading blind holes in steel and stainless steel. The spiral flute design evacuates chips upward, preventing clogging in deep or blind holes. It is commonly used in automotive, aerospace, and general manufacturing for producing precise internal threads in tough materials.
What are the specifications of the OSG spiral flute tap M18x2.5?
This OSG tap has a metric thread size of M18x2.5 with a D7 / 4H-6H tolerance class. It features 4 flutes and a modified bottoming chamfer for threading close to the bottom of blind holes. The manufacturer part number is 1645518257. It is designed for steel and stainless steel applications.
Where to buy the OSG spiral flute tap M18x2.5 worldwide?
You can source the OSG spiral flute tap M18x2.5 (MPN 1645518257) 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; we supply genuine OSG tooling for your manufacturing needs.
How to select the correct OSG spiral flute tap for steel?
For threading steel and stainless steel, select a spiral flute tap with a modified bottoming chamfer like this OSG M18x2.5 model. Ensure the thread tolerance (D7 / 4H-6H) matches your required fit. Use appropriate cutting fluid and machine speed per OSG recommendations. For blind holes, spiral flute taps are ideal as they pull chips out of the hole.
Used in
Common applications for OSGOSG Products
3G Electric supplies OSG spiral-flute taps for steel & stainless steel. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.
