OSG Spiral Flute Tap: #4-40 UNC, H2 / 2B-3B, 2 Flute
SKU 3G-OTH-219027
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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 and enabling clean threads in deep or blind-hole applications common in automotive, aerospace, and general manufacturing.
What are the specifications of the OSG spiral flute tap MPN 1763905?
The OSG spiral flute tap MPN 1763905 is a #4-40 UNC tap with a H2 / 2B-3B tolerance class. It has 2 flutes and a modified bottoming chamfer, making it suitable for threading blind holes in steel and stainless steel. The H2 limit ensures precise thread fit for class 2B-3B applications.
Where to buy OSG taps in worldwide?
You can source OSG 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 OSG spiral flute tap #4-40 UNC MPN 1763905.
How to select the correct OSG tap for stainless steel?
For stainless steel, select an OSG spiral flute tap with a modified bottoming chamfer and H2 tolerance, like the #4-40 UNC MPN 1763905. The spiral flute design aids chip evacuation, while the H2 limit ensures proper thread fit. Always match the tap to the material hardness and thread class required.
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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.















