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OSG Extension Tap: 1"-8 UNC, H6 / 2B-3B, 4 Flute - Spiral-Flute Extension Taps for Multiple Materials
OSGSpiral-Flute Extension Taps for Multiple Materials

OSG Extension Tap: 1"-8 UNC, H6 / 2B-3B, 4 Flute

SKU 3G-OTH-311755

Brand
OSG
Item
Extension Tap: 1"-8 UNC, H6 / 2B-3B, 4 Flute
Category
Spiral-Flute Extension Taps for Multiple Materials
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Technical Specifications

OSG
Manufacturer Part Number
1652505308
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OSG Products
3G Electric (S) Pte. Ltd. — Singapore

Frequently Asked Questions

What is the OSG Extension Tap 1"-8 UNC used for?

The OSG Extension Tap is used for threading holes in multiple materials, including steel, stainless steel, and aluminum. Its spiral-flute design evacuates chips upward, making it ideal for blind-hole threading. The modified bottoming chamfer allows threading close to the bottom of the hole, while the H6 / 2B-3B tolerance ensures precise fit for UNC fasteners.

What are the specifications of the OSG Extension Tap MPN 1652505308?

The OSG Extension Tap MPN 1652505308 has a 1"-8 UNC thread size, H6 / 2B-3B tolerance class, 4 flutes, and a modified bottoming chamfer. It is a spiral-flute extension tap designed for multiple materials. The H6 tolerance ensures high precision for thread fit, suitable for both 2B and 3B classes.

Where to buy the OSG Extension Tap 1"-8 UNC worldwide?

You can source the OSG Extension Tap 1"-8 UNC 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 taps for industrial threading applications.

How to select the correct OSG extension tap for threading?

To select the correct OSG extension tap, match the thread size (e.g., 1"-8 UNC) and tolerance class (H6 / 2B-3B) to your application. Consider material type: spiral-flute taps work well for blind holes in steel or aluminum. Ensure the tap length provides sufficient reach. Consult OSG's technical data for optimal speeds and feeds.

Used in

Common applications for OSG
Automotive engine block production — OSG micro drill bits for oil gallery and coolant passage drilling in cast iron
Medical device manufacturing — OSG micro drill bits for drilling bone screw pilot holes in stainless steel implants
Aerospace component machining — OSG micro drill bits for fastener holes in titanium alloy structural parts
Mold and die making — OSG micro drill bits for cooling channel drilling in hardened tool steel (HRC 45-50)
Electronics enclosure fabrication — OSG micro drill bits for precision holes in aluminum alloy housings (with appropriate coating selection)
General engineering job shops — OSG micro drill bits for small-diameter hole drilling in mild steel and alloy steel parts

OSG 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.

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