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OSG Spiral Flute Tap: 9/16"-12 UNC, H3 / 2B-3B, 4 Flute - General Purpose Spiral-Flute Taps
OSGGeneral Purpose Spiral-Flute Taps

OSG Spiral Flute Tap: 9/16"-12 UNC, H3 / 2B-3B, 4 Flute

The OSG Spiral Flute Tap (9/16"-12 UNC) is a general-purpose spiral-flute tap with an H3 / 2B-3B tolerance, 4 flutes, and a modified bottoming chamfer (MPN 2948600). Designed for threading applications, it is…

SKU 3G-OTH-231070

Brand
OSG
Item
Spiral Flute Tap: 9/16"-12 UNC, H3 / 2B-3B, 4 Flute
Category
General Purpose Spiral-Flute Taps
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Technical Specifications

OSG
Manufacturer Part Number
2948600
Type
H3 / 2B-3B, Modified Bottoming Chamfer
Flute
4

Technical Documents

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OSG Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The OSG Spiral Flute Tap (9/16"-12 UNC) is a general-purpose spiral-flute tap with an H3 / 2B-3B tolerance, 4 flutes, and a modified bottoming chamfer (MPN 2948600). Designed for threading applications, it is supplied by 3G Electric, a global industrial solutions provider that interprets customer demand and delivers genuine equipment across 14 departments, with specialist depth in combustion, pumps, and controls.

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 ferrous and non-ferrous materials. Its modified bottoming chamfer and 4-flute design efficiently evacuate chips upward, making it ideal for automotive, aerospace, and general machining applications where thread depth is critical.

What are the specifications of the OSG tap MPN 2948600?

The OSG tap MPN 2948600 is a 9/16"-12 UNC spiral flute tap with an H3 / 2B-3B tolerance class, 4 flutes, and a modified bottoming chamfer. It is a general purpose tap suitable for producing threads in blind holes, with a 2B-3B fit range for medium to close tolerance threads.

Where to buy OSG taps like 2948600 worldwide?

3G Electric supplies OSG taps including the 2948600 model to customers worldwide. As a global industrial solutions provider, we handle full logistics, customs clearance, and delivery to your facility. Contact us for pricing and lead time on this and other OSG threading tools.

How to select the right spiral flute tap for blind holes?

For blind holes, choose a spiral flute tap with a modified bottoming chamfer like this OSG 9/16"-12 UNC tap. The spiral flutes pull chips out of the hole, preventing clogging. Ensure the tap's thread class (e.g., H3 / 2B-3B) matches your required fit. Use proper cutting fluid and speed for the material.

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 general purpose spiral-flute taps. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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Cross-referenced by specification & description
OSG Spiral Flute Tap: 9/16"-12 UNC, H3 / 2B-3B, 4 Flute, Modified Bottoming Chamfer (MPN 2948601)
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