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OSG Spiral Flute Tap: 1/4"-20 UNC, H11, 3 Flute, Modified Bottoming Chamfer (MPN 2940301) - Oversized Spiral-Flute Taps
OSGOversized Spiral-Flute Taps

OSG Spiral Flute Tap: 1/4"-20 UNC, H11, 3 Flute, Modified Bottoming Chamfer (MPN 2940301)

SKU 3G-OTH-211245

Brand
OSG
Item
Spiral Flute Tap: 1/4"-20 UNC, H11, 3 Flute, Modified Bottoming Chamfer
Category
Oversized Spiral-Flute Taps
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Technical Specifications

OSG
Manufacturer Part Number
2940301
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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 materials like steel and aluminum. Its 3-flute design and modified bottoming chamfer efficiently evacuate chips upward, making it ideal for automotive, aerospace, and general manufacturing applications where precise internal threads are required.

What are the specifications of the OSG spiral flute tap MPN 2940301?

The OSG spiral flute tap MPN 2940301 has a thread size of 1/4"-20 UNC, a H11 tolerance, 3 flutes, and a modified bottoming chamfer. It is an oversized tap designed for producing threads in blind holes, with a manufacturer part number of 2940301 and SKU 2PJR3.

Where to buy OSG taps in worldwide?

You can source OSG taps, including the spiral flute tap MPN 2940301, through 3G Electric. As a global industrial equipment distributor since 1990, we handle full logistics, customs clearance, and delivery to worldwide locations, ensuring you receive genuine OSG products for your threading needs.

How to select the right OSG tap for blind holes?

For blind holes, choose a spiral flute tap like this OSG model to pull chips out of the hole. Consider thread size (1/4"-20 UNC), flute count (3), and chamfer type (modified bottoming). Ensure the tap's H11 tolerance matches your material and thread class requirements for optimal performance.

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 oversized 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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