OSG Extension Tap: 5/16"-18 UNC, H3 / 2B-3B, 3 Flute
SKU 3G-OTH-315312
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Frequently Asked Questions
What is the OSG Extension Tap 0144301 used for?
The OSG Extension Tap 0144301 is used for threading blind holes in steel and stainless steel. Its spiral-flute design evacuates chips upward, preventing clogging, while the extended length allows access to deep or recessed areas. It is ideal for maintenance, repair, and production environments requiring precise UNC threads.
What are the specifications of the OSG Extension Tap 0144301?
The OSG Extension Tap 0144301 has a thread size of 5/16"-18 UNC, with a H3 / 2B-3B tolerance class. It features 3 flutes and a bottoming chamfer for threading to the bottom of blind holes. The spiral-flute design is optimized for steel and stainless steel. The manufacturer part number is 0144301.
Where to buy the OSG Extension Tap 0144301 worldwide?
You can source the OSG Extension Tap 0144301 through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to worldwide destinations. Contact us for availability and lead time; we provide competitive pricing and reliable sourcing for this OSG tap.
How to select the correct OSG extension tap for steel?
To select the correct OSG extension tap for steel, match the thread size (e.g., 5/16"-18 UNC) and tolerance class (H3 / 2B-3B) to your application. For blind holes, choose a bottoming chamfer; for through holes, a plug or taper chamfer. Ensure the tap is rated for steel or stainless steel, as OSG designs specific geometries for these materials.
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Common applications for OSGOSG Products
3G Electric supplies OSG spiral-flute extension taps for steel & stainless steel. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.















