OSG Spiral Flute Tap: 3/4"-16 UNF, H3 / 2B-3B, 4 Flute
The OSG Spiral Flute Tap (3/4"-16 UNF) is a 4-flute tap with a Modified Bottoming Chamfer, classified as H3 / 2B-3B (MPN 1645034163). Designed for threading steel and stainless steel, this tool is supplied by 3G…
SKU 3G-OTH-218752
Need installation or engineering help?
Ask a question
Product Description
The OSG Spiral Flute Tap (3/4"-16 UNF) is a 4-flute tap with a Modified Bottoming Chamfer, classified as H3 / 2B-3B (MPN 1645034163). Designed for threading steel and stainless steel, this tool is supplied by 3G Electric, a global industrial solutions provider that interprets customer demand and delivers genuine equipment across 14 departments, with specialist depth in combustion, pumps and controls.
Frequently Asked Questions
What is the OSG spiral flute tap 3/4-16 UNF 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, while the modified bottoming chamfer allows threading close to the hole bottom. It is commonly used in automotive, aerospace, and general manufacturing applications.
What are the specifications of the OSG spiral flute tap 1645034163?
The OSG spiral flute tap has a thread size of 3/4"-16 UNF, with a thread tolerance of H3 / 2B-3B. It features 4 flutes and a modified bottoming chamfer. The manufacturer part number is 1645034163. This tap is intended for threading 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 on this OSG tap model 1645034163.
How to select the correct OSG spiral flute tap for steel?
Select an OSG spiral flute tap based on thread size, pitch, and material. For steel and stainless steel, use taps with H3 tolerance for precise fit. The modified bottoming chamfer allows threading near the bottom of blind holes. Ensure the tap matches your hole depth and thread class (2B-3B).
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.















