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OSG Spiral Flute Tap: 1/4"-20 UNC, H3 / 2B-3B, 2 Flute - Spiral-Flute Taps for Steel & Stainless Steel
OSGSpiral-Flute Taps for Steel & Stainless Steel

OSG Spiral Flute Tap: 1/4"-20 UNC, H3 / 2B-3B, 2 Flute

The OSG Spiral Flute Tap (1/4"-20 UNC, MPN 1645014203) is a 2-flute tap with a modified bottoming chamfer, rated H3 / 2B-3B. Designed for steel and stainless steel, it is supplied by 3G Electric, an industrial…

SKU 3G-OTH-218671

Brand
OSG
Item
Spiral Flute Tap: 1/4"-20 UNC, H3 / 2B-3B, 2 Flute
Category
Spiral-Flute Taps for Steel & Stainless Steel
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Technical Specifications

OSG
Manufacturer Part Number
1645014203
Type
H3 / 2B-3B, Modified Bottoming Chamfer
Flute
2
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OSG Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The OSG Spiral Flute Tap (1/4"-20 UNC, MPN 1645014203) is a 2-flute tap with a modified bottoming chamfer, rated H3 / 2B-3B. Designed for steel and stainless steel, it is supplied by 3G Electric, an industrial solutions provider that interprets demand and delivers genuine equipment across 14 departments, with specialist depth in combustion, pumps and controls.

Supplied to the Philippines — compatible with 60 Hz installations. DHL Express delivery to Manila, Quezon City, Cebu, customs and duties handled door-to-door.

Frequently Asked Questions

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

The OSG spiral flute tap is designed for threading blind holes in steel and stainless steel. Its spiral flute design evacuates chips upward, preventing clogging. The modified bottoming chamfer allows threading close to the hole bottom, making it ideal for automotive, aerospace, and general manufacturing applications.

What are the specifications of the OSG 1645014203 tap?

This OSG tap has a 1/4-20 UNC thread size, H3 / 2B-3B tolerance, 2 flutes, and a modified bottoming chamfer. It is a spiral flute tap for steel and stainless steel. The manufacturer part number is 1645014203. These specs ensure precise thread fit and chip evacuation in blind-hole applications.

Where to buy OSG taps in worldwide?

3G Electric supplies OSG taps worldwide. As a global industrial distributor, we handle full logistics, customs clearance, and delivery to your site. Contact us for availability and lead time. We source and deliver genuine OSG tooling to support your manufacturing operations anywhere in the world.

How to select the right OSG tap for steel?

For steel and stainless steel blind holes, choose a spiral flute tap like the OSG 1645014203. Ensure the thread size (1/4-20 UNC), tolerance (H3 / 2B-3B), and chamfer type (modified bottoming) match your application. Use appropriate cutting fluid and speed for the material. 3G Electric can help with selection guidance.

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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