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OSG Spiral Flute Tap: 5/8"-18 UNF, H3 / 2B-3B, 3 Flute - Spiral-Flute Taps for Steel & Stainless Steel
OSGSpiral-Flute Taps for Steel & Stainless Steel

OSG Spiral Flute Tap: 5/8"-18 UNF, H3 / 2B-3B, 3 Flute

The OSG Spiral Flute Tap (5/8"-18 UNF, MPN 1761905) is a spiral-flute tap for steel and stainless steel, featuring a 3-flute design with H3 / 2B-3B tolerance and a modified bottoming chamfer. This tool is engineered…

SKU 3G-OTH-218741

Brand
OSG
Item
Spiral Flute Tap: 5/8"-18 UNF, H3 / 2B-3B, 3 Flute
Category
Spiral-Flute Taps for Steel & Stainless Steel
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Technical Specifications

OSG
Manufacturer Part Number
1761905
Type
H3 / 2B-3B, Modified Bottoming Chamfer
Flute
3
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OSG Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The OSG Spiral Flute Tap (5/8"-18 UNF, MPN 1761905) is a spiral-flute tap for steel and stainless steel, featuring a 3-flute design with H3 / 2B-3B tolerance and a modified bottoming chamfer. This tool is engineered for threading applications requiring precise chip evacuation and thread accuracy in harder materials.

Frequently Asked Questions

What is the OSG spiral flute tap 5/8"-18 UNF used for?

This OSG spiral flute tap is designed for threading blind holes in steel and stainless steel. The spiral flute design evacuates chips upward, preventing clogging. It is commonly used in automotive, aerospace, and general manufacturing applications requiring precise UNF threads.

What are the specifications of the OSG 1761905 tap?

The OSG 1761905 is a 5/8"-18 UNF spiral flute tap with a H3 / 2B-3B tolerance class. It has 3 flutes and a modified bottoming chamfer, making it suitable for threading blind holes in steel and stainless steel. The H3 limit ensures precise thread fit.

Where to buy OSG taps in worldwide?

You can source OSG taps like the 1761905 through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to worldwide locations. Contact us for availability and lead time on this and other OSG threading tools.

How to select the right OSG tap for steel?

For steel and stainless steel blind holes, choose a spiral flute tap like the OSG 1761905 with a modified bottoming chamfer. Ensure the thread size (5/8"-18 UNF) and tolerance (H3 / 2B-3B) match your application. Use appropriate cutting fluid and follow manufacturer speed/feed recommendations for best results.

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 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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