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OSG Spiral Flute Tap: 9/16"-12 UNC, H3 / 2B-3B, 3 Flute - Spiral-Flute Taps for Steel & Stainless Steel
OSGSpiral-Flute Taps for Steel & Stainless Steel

OSG Spiral Flute Tap: 9/16"-12 UNC, H3 / 2B-3B, 3 Flute

The OSG Spiral Flute Tap (9/16"-12 UNC, MPN 1645096123) is a 3-flute, modified bottoming chamfer tap with H3 / 2B-3B tolerance, designed for threading steel and stainless steel. 3G Electric interprets your demand for…

SKU 3G-OTH-218601

Brand
OSG
Item
Spiral Flute Tap: 9/16"-12 UNC, H3 / 2B-3B, 3 Flute
Category
Spiral-Flute Taps for Steel & Stainless Steel
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Technical Specifications

OSG
Manufacturer Part Number
1645096123
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 (9/16"-12 UNC, MPN 1645096123) is a 3-flute, modified bottoming chamfer tap with H3 / 2B-3B tolerance, designed for threading steel and stainless steel. 3G Electric interprets your demand for this specific OEM tool, sources it across our 14 industrial departments, and supports your application with specialist expertise in controls and pumps.

Frequently Asked Questions

What is the OSG spiral flute tap 9/16"-12 UNC 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. The modified bottoming chamfer allows threading close to the bottom of the hole, making it ideal for production tapping in automotive, aerospace, and general manufacturing.

What are the specifications of the OSG 1645096123 tap?

The OSG 1645096123 is a 9/16"-12 UNC spiral flute tap with 3 flutes and a modified bottoming chamfer. It has an H3 / 2B-3B tolerance class, meaning it produces threads within a 2B (internal) to 3B (external) fit range. It is designed for threading steel and stainless steel 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 location. Contact us for availability and lead time on the OSG 1645096123 spiral flute tap. We source and deliver genuine OSG tooling to support your production needs.

How to select the right OSG tap for blind holes?

For blind holes in steel or stainless steel, choose a spiral flute tap like this OSG model. The spiral flutes pull chips out of the hole, preventing breakage. Ensure the chamfer type matches your thread depth requirement: a modified bottoming chamfer allows threading close to the hole bottom. Always match the tap tolerance (H3) to your desired thread class (2B-3B).

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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