OSG Spiral Flute Tap: 1/4"-32 UNEF, H3 / 2B-3B, 3 Flute, Bottoming Chamfer
The OSG Spiral Flute Tap (1/4"-32 UNEF) is a spiral-flute tap for steel and stainless steel, featuring a bottoming chamfer, 3 flutes, and V coated powdered metal construction. It is specified as H3 / 2B-3B (MPN…
SKU 3G-OTH-217822
Need installation or engineering help?
Ask a question
Product Description
The OSG Spiral Flute Tap (1/4"-32 UNEF) is a spiral-flute tap for steel and stainless steel, featuring a bottoming chamfer, 3 flutes, and V coated powdered metal construction. It is specified as H3 / 2B-3B (MPN 1650511008).
Frequently Asked Questions
What is the OSG spiral flute tap 1650511008 used for?
This 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 V coating and powdered metal construction provide wear resistance for production tapping. It is commonly used in automotive, aerospace, and general manufacturing applications.
What are the specifications of the OSG 1650511008 tap?
The OSG 1650511008 is a spiral flute tap with a 1/4"-32 UNEF thread size, H3 / 2B-3B tolerance, 3 flutes, and a bottoming chamfer. It features a V coating on powdered metal substrate. The manufacturer part number is 1650511008. This tap is intended for threading blind holes in steel and stainless steel.
Where to buy OSG taps in worldwide?
You can source OSG taps, including model 1650511008, through 3G Electric. As a global industrial equipment distributor established in 1990, we handle full logistics, customs clearance, and delivery to worldwide destinations. Contact us for availability and lead time on this and other OSG threading tools.
How to select the correct OSG tap for a blind hole?
For blind holes in steel or stainless steel, choose a spiral flute tap like the OSG 1650511008. The spiral flutes pull chips out of the hole, preventing breakage. Ensure the tap has a bottoming chamfer for threading close to the hole bottom. Match thread size, pitch, and tolerance class (e.g., H3 / 2B-3B) to your application requirements.
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.















