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OSG Extension Tap: 5/16"-24 UNF, H3 / 2B-3B, 3 Flute - Spiral-Flute Extension Taps for Steel & Stainless Steel
OSGSpiral-Flute Extension Taps for Steel & Stainless Steel

OSG Extension Tap: 5/16"-24 UNF, H3 / 2B-3B, 3 Flute

SKU 3G-OTH-315338

Brand
OSG
Item
Extension Tap: 5/16"-24 UNF, H3 / 2B-3B, 3 Flute
Category
Spiral-Flute Extension Taps for Steel & Stainless Steel
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Technical Specifications

OSG
Manufacturer Part Number
1768601
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OSG Products
3G Electric (S) Pte. Ltd. — Singapore

Frequently Asked Questions

What is the OSG 1768601 extension tap used for?

The OSG 1768601 extension tap is designed for threading blind holes in steel and stainless steel. Its spiral-flute design evacuates chips upward, making it ideal for deep-hole tapping where chip clearance is critical. The modified bottoming chamfer allows threading close to the hole bottom.

What are the specifications of the OSG 1768601 extension tap?

This OSG extension tap has a thread size of 5/16"-24 UNF, with a ground thread tolerance of H3 for the tap and 2B-3B for the nut. It features 3 flutes and a modified bottoming chamfer. The manufacturer part number is 1768601.

Where to buy OSG extension taps worldwide?

3G Electric supplies OSG extension taps like the 1768601 to customers worldwide. We handle full logistics, customs clearance, and delivery to your facility. Contact us for pricing and lead time on this spiral-flute tap for steel and stainless steel.

How to select the correct OSG extension tap for steel?

For threading steel, select an OSG extension tap with a spiral-flute design to manage chip evacuation in deep holes. Match the thread size (e.g., 5/16"-24 UNF) and tolerance class (H3 for the tap) to your application. Use a modified bottoming chamfer when threading near the hole bottom.

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 steel & stainless steel. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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