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OSG Spiral Flute Tap: 1/4"-28 UNF, H2 / 2B-3B, 3 Flute - General Purpose Spiral-Flute Taps
OSGGeneral Purpose Spiral-Flute Taps

OSG Spiral Flute Tap: 1/4"-28 UNF, H2 / 2B-3B, 3 Flute

SKU 3G-OTH-230070

Brand
OSG
Item
Spiral Flute Tap: 1/4"-28 UNF, H2 / 2B-3B, 3 Flute
Category
General Purpose Spiral-Flute Taps
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Technical Specifications

OSG
Manufacturer Part Number
2930300
Type
H2 / 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 1/4-28 UNF used for?

This OSG spiral flute tap is designed for threading blind holes in materials such as steel and stainless steel. Its modified bottoming chamfer allows threading close to the bottom of the hole, while the spiral flute design evacuates chips upward, preventing clogging.

What are the specifications of the OSG tap 2930300?

The OSG tap 2930300 is a 1/4-28 UNF spiral flute tap with 3 flutes, H2 / 2B-3B tolerance, and a modified bottoming chamfer. It is a general-purpose tap suitable for producing threads in blind holes with good chip evacuation.

Where to buy OSG taps in worldwide?

3G Electric supplies OSG taps like the 2930300 to customers worldwide. We handle full logistics and customs clearance, ensuring delivery to your facility. Contact us for pricing and lead time on this and other OSG threading tools.

How to select the correct tap for a blind hole?

For blind holes, choose a spiral flute tap with a bottoming or modified bottoming chamfer to thread close to the hole bottom. The OSG 2930300 with 3 flutes and H2 tolerance is a reliable choice for UNF threads in steel and stainless steel.

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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