OSG Spiral Flute Tap: 1/4"-20 UNC, H3 / 2B-3B, 2 Flute
The OSG Spiral Flute Tap (1/4"-20 UNC, MPN 1645014203) is a 2-flute tap with a modified bottoming chamfer, rated H3 / 2B-3B. Designed for steel and stainless steel, it is supplied by 3G Electric, an industrial…
SKU 3G-OTH-218671
Need installation or engineering help?
Ask a question
Product Description
The OSG Spiral Flute Tap (1/4"-20 UNC, MPN 1645014203) is a 2-flute tap with a modified bottoming chamfer, rated H3 / 2B-3B. Designed for steel and stainless steel, it is supplied by 3G Electric, an industrial solutions provider that interprets demand and delivers genuine equipment across 14 departments, with specialist depth in combustion, pumps and controls.
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 OSG spiral flute tap 1/4-20 UNC used for?
The OSG spiral flute tap is designed for threading blind holes in steel and stainless steel. Its spiral flute design evacuates chips upward, preventing clogging. The modified bottoming chamfer allows threading close to the hole bottom, making it ideal for automotive, aerospace, and general manufacturing applications.
What are the specifications of the OSG 1645014203 tap?
This OSG tap has a 1/4-20 UNC thread size, H3 / 2B-3B tolerance, 2 flutes, and a modified bottoming chamfer. It is a spiral flute tap for steel and stainless steel. The manufacturer part number is 1645014203. These specs ensure precise thread fit and chip evacuation in blind-hole applications.
Where to buy OSG taps in worldwide?
3G Electric supplies OSG taps worldwide. As a global industrial distributor, we handle full logistics, customs clearance, and delivery to your site. Contact us for availability and lead time. We source and deliver genuine OSG tooling to support your manufacturing operations anywhere in the world.
How to select the right OSG tap for steel?
For steel and stainless steel blind holes, choose a spiral flute tap like the OSG 1645014203. Ensure the thread size (1/4-20 UNC), tolerance (H3 / 2B-3B), and chamfer type (modified bottoming) match your application. Use appropriate cutting fluid and speed for the material. 3G Electric can help with selection guidance.
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.















