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OSG Spiral Flute Tap: #4-40 UNC, H2 / 2B-3B, 2 Flute, Plug Chamfer - General Purpose Spiral-Flute Taps
OSGGeneral Purpose Spiral-Flute Taps

OSG Spiral Flute Tap: #4-40 UNC, H2 / 2B-3B, 2 Flute, Plug Chamfer

The OSG Spiral Flute Tap (#4-40 UNC, MPN 1406405) is a general-purpose spiral-flute tap with a H2 / 2B-3B tolerance, 2-flute design, plug chamfer, and TiN-coated high-speed steel construction. 3G Electric interprets…

SKU 3G-OTH-230937

Brand
OSG
Item
Spiral Flute Tap: #4-40 UNC, H2 / 2B-3B, 2 Flute, Plug Chamfer
Category
General Purpose Spiral-Flute Taps
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Technical Specifications

OSG
Manufacturer Part Number
1406405
Type
H2 / 2B-3B, Plug Chamfer, TiN Coated High Speed Steel
Flute
2
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OSG Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The OSG Spiral Flute Tap (#4-40 UNC, MPN 1406405) is a general-purpose spiral-flute tap with a H2 / 2B-3B tolerance, 2-flute design, plug chamfer, and TiN-coated high-speed steel construction. 3G Electric interprets your demand for this OEM-specified tool and delivers it across 14 industrial departments — with specialist depth in combustion, pumps, and controls as a trust anchor, not a limit.

Frequently Asked Questions

What is the OSG Spiral Flute Tap #4-40 UNC used for?

This OSG spiral flute tap is designed for threading blind holes in materials such as steel and aluminum. The TiN coating reduces friction and extends tool life, while the plug chamfer and 2-flute design efficiently evacuate chips upward, preventing clogging in deep-hole applications.

What are the specifications of the OSG Spiral Flute Tap 1406405?

The OSG tap has a #4-40 UNC thread size, H2 / 2B-3B tolerance, 2 flutes, plug chamfer, and TiN coated high speed steel construction. The manufacturer part number is 1406405. It is designed for general purpose threading in blind holes, offering reliable chip evacuation and durability.

Where to buy OSG taps in worldwide?

3G Electric supplies OSG taps worldwide, handling full logistics and customs clearance for international orders. As a global industrial distributor since 1990, we source and deliver genuine OSG tooling to your location. Contact us for availability and lead time on the OSG Spiral Flute Tap 1406405.

How to select the right OSG tap for blind holes?

For blind holes, choose a spiral flute tap like this OSG #4-40 UNC model, which pushes chips upward. Verify thread size, pitch, and chamfer type (plug chamfer is standard for blind holes). Ensure the tap's tolerance (H2 / 2B-3B) matches your required thread class. TiN coating helps with harder materials.

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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