OSG Extension Tap: 1/2"-20 UNF, H5 / 2B-3B, 3 Flute
SKU 3G-OTH-311758
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Frequently Asked Questions
What is an OSG extension tap used for?
An OSG extension tap is used for threading hard-to-reach holes in multiple materials. Its extended reach allows tapping deep or obstructed locations where standard taps cannot access, making it ideal for maintenance, repair, and production applications in automotive, aerospace, and general manufacturing.
What are the specifications of the OSG 1/2"-20 UNF extension tap?
The OSG extension tap has a 1/2"-20 UNF thread size, H5 tolerance for 2B-3B class fit, 3 flutes, and a modified bottoming chamfer. The manufacturer part number is 1652503508. It is designed for multiple materials and provides precise thread cutting in extended-reach applications.
Where to buy OSG extension taps worldwide?
You can source OSG extension 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 tooling for your threading needs.
How to select the correct OSG extension tap for a job?
To select the correct OSG extension tap, match the thread size (e.g., 1/2"-20 UNF), tolerance class (H5 for 2B-3B), and chamfer type (modified bottoming) to your hole requirements. Consider material type and tap flute count (3 flutes for chip evacuation). OSG taps are precision-ground for consistent performance.
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Common applications for OSGOSG Products
3G Electric supplies OSG spiral-flute extension taps for multiple materials. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.
