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OSG Spiral Flute Tap: 1/4"-20 UNC, H5 / 2B-3B, 3 Flute - Spiral-Flute Taps for Steel & Stainless Steel
OSGSpiral-Flute Taps for Steel & Stainless Steel

OSG Spiral Flute Tap: 1/4"-20 UNC, H5 / 2B-3B, 3 Flute

SKU 3G-OTH-218908

Brand
OSG
Item
Spiral Flute Tap: 1/4"-20 UNC, H5 / 2B-3B, 3 Flute
Category
Spiral-Flute Taps for Steel & Stainless Steel
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Technical Specifications

OSG
Manufacturer Part Number
1703501
Type
H5 / 2B-3B, Modified Bottoming Chamfer
Flute
3
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OSG Products
3G Electric (S) Pte. Ltd. — Singapore

Frequently Asked Questions

What is the OSG spiral flute tap 1/4"-20 UNC used for?

This OSG spiral flute tap is designed for threading blind holes in steel and stainless steel. Its spiral flute design evacuates chips upward, preventing clogging and ensuring clean threads in deep or blind-hole applications common in machining and industrial maintenance.

What are the specifications of the OSG spiral flute tap 1/4"-20 UNC?

This OSG tap has a 1/4"-20 UNC thread size, H5 / 2B-3B tolerance, 3 flutes, and a modified bottoming chamfer. The MPN is 1703501. It is designed for threading steel and stainless steel, with the spiral flute geometry aiding chip evacuation in blind holes.

Where to buy OSG spiral flute taps worldwide?

3G Electric supplies OSG spiral flute taps like this 1/4"-20 UNC model to customers worldwide. We handle full logistics, customs clearance, and delivery to your facility. Contact us for pricing and lead time on this and other OSG cutting tools.

How to select the right OSG spiral flute tap for steel?

For steel and stainless steel blind holes, choose a spiral flute tap like this OSG 1/4"-20 UNC with a modified bottoming chamfer. The H5 tolerance ensures precise thread fit. Match the tap size to your hole diameter and thread class (2B-3B) for optimal 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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