OSG Spiral Flute Tap: #4-40 UNC, H2 / 2B-3B, 2 Flute, Bottoming Chamfer
The OSG Spiral Flute Tap (#4-40 UNC, MPN 0141808) is a bottoming-chamfer tap with a 2-flute design, H2 / 2B-3B tolerance, and V-coated powdered metal construction, engineered for threading steel and stainless steel…
SKU 3G-OTH-218860
Need installation or engineering help?
Ask a question
Product Description
The OSG Spiral Flute Tap (#4-40 UNC, MPN 0141808) is a bottoming-chamfer tap with a 2-flute design, H2 / 2B-3B tolerance, and V-coated powdered metal construction, engineered for threading steel and stainless steel. 3G Electric interprets your demand for this precision tool, sources it from our global network, and supports your operation with specialist expertise across 14 industrial departments — including combustion, pumps, and controls — ensuring you get the right solution, not just a part.
Frequently Asked Questions
What is the OSG spiral flute tap #4-40 UNC used for?
The OSG spiral flute tap #4-40 UNC is designed for threading blind holes in steel and stainless steel. Its spiral flute design evacuates chips upward, preventing clogging. The V coated powdered metal construction provides wear resistance for production tapping. It is commonly used in automotive, aerospace, and general manufacturing applications.
What are the specifications of the OSG spiral flute tap #4-40 UNC?
The OSG spiral flute tap has a #4-40 UNC thread size, H2 / 2B-3B tolerance, 2 flutes, and a bottoming chamfer. It is made of V coated powdered metal. The manufacturer part number is 0141808. This tap is suitable for threading blind holes in steel and stainless steel materials.
Where to buy OSG spiral flute taps worldwide?
You can source OSG spiral flute 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. We supply genuine OSG cutting tools for manufacturing and maintenance operations.
How to select the correct OSG tap for steel threading?
Select an OSG tap based on thread size, hole type, and material. For blind holes in steel, use a spiral flute tap with a bottoming chamfer. The #4-40 UNC tap with H2 tolerance fits 2B-3B thread classes. Ensure the tap coating matches the material—V coated powdered metal works for steel and stainless steel. Consult OSG's technical data for optimal speeds and feeds.
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.















