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

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

SKU 3G-OTH-230548

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

OSG
Manufacturer Part Number
1430505
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OSG Products
3G Electric (S) Pte. Ltd. — Singapore

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 ferrous and non-ferrous materials. Its 3-flute design and bottoming chamfer allow chip evacuation upward, making it ideal for general-purpose tapping in automotive, aerospace, and general manufacturing applications.

What are the specifications of the OSG 1430505 tap?

The OSG 1430505 is a 5/16"-18 UNC spiral flute tap with a H3 / 2B-3B tolerance class. It has 3 flutes and a bottoming chamfer, suitable for threading blind holes. The manufacturer part number is 1430505, and it is a general-purpose tap for ferrous and non-ferrous materials.

Where to buy OSG taps in worldwide?

You can source OSG taps worldwide through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time on the OSG 1430505 spiral flute tap.

How to select the correct OSG tap for blind holes?

For blind holes, choose a spiral flute tap like the OSG 1430505, which pushes chips upward. Ensure the thread size (5/16"-18 UNC) matches your hole, and select the H3 / 2B-3B tolerance for standard fits. Always use proper cutting fluid and follow manufacturer speed recommendations.

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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