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OSG Spiral Flute Tap: 5/16"-18 UNC, H3 / 2B-3B, 3 Flute, Plug Chamfer - General Purpose Spiral-Flute Taps
OSGGeneral Purpose Spiral-Flute Taps

OSG Spiral Flute Tap: 5/16"-18 UNC, H3 / 2B-3B, 3 Flute, Plug Chamfer

The OSG Spiral Flute Tap (5/16"-18 UNC, MPN 1430405) is a general-purpose spiral-flute tap with a TiN-coated high-speed steel construction, featuring an H3 / 2B-3B tolerance, plug chamfer, and 3-flute design.

SKU 3G-OTH-230063

Brand
OSG
Item
Spiral Flute Tap: 5/16"-18 UNC, H3 / 2B-3B, 3 Flute, Plug Chamfer
Category
General Purpose Spiral-Flute Taps
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Technical Specifications

OSG
Manufacturer Part Number
1430405
Type
H3 / 2B-3B, Plug Chamfer, TiN Coated High Speed Steel
Flute
3
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OSG Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The OSG Spiral Flute Tap (5/16"-18 UNC, MPN 1430405) is a general-purpose spiral-flute tap with a TiN-coated high-speed steel construction, featuring an H3 / 2B-3B tolerance, plug chamfer, and 3-flute design.

Frequently Asked Questions

What is the OSG spiral flute tap 5/16-18 UNC used for?

This OSG spiral flute tap is designed for threading blind holes in materials such as steel and stainless steel. Its 3-flute design and plug chamfer efficiently evacuate chips upward, making it ideal for general-purpose tapping in automotive, aerospace, and industrial manufacturing applications.

What are the specifications of the OSG spiral flute tap 1430405?

The OSG spiral flute tap has a thread size of 5/16-18 UNC, with H3 / 2B-3B tolerance. It features 3 flutes, a plug chamfer, and a TiN coated high-speed steel construction. The manufacturer part number is 1430405, and it is classified as a general-purpose spiral-flute tap.

Where to buy OSG spiral flute taps worldwide?

You can source the OSG spiral flute tap 1430405 through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to worldwide destinations. Contact us for availability and lead time on this and other OSG tapping tools.

How to select the correct OSG tap for blind holes?

For blind holes, choose a spiral flute tap like this OSG model, which pushes chips upward and out of the hole. Ensure the thread size (5/16-18 UNC), chamfer type (plug), and tolerance (H3 / 2B-3B) match your material and application. TiN coating improves wear resistance in ferrous metals.

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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