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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

The OSG Spiral Flute Tap (5/16"-18 UNC, MPN 2930808) is a general-purpose spiral-flute tap with an H3 / 2B-3B tolerance, 3 flutes, and a modified bottoming chamfer. This OSG tap is designed for threading applications…

SKU 3G-OTH-230457

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
2930808
Type
H3 / 2B-3B, Modified Bottoming Chamfer
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 2930808) is a general-purpose spiral-flute tap with an H3 / 2B-3B tolerance, 3 flutes, and a modified bottoming chamfer. This OSG tap is designed for threading applications requiring precise fit control.

Frequently Asked Questions

What is the OSG spiral flute tap 2930808 used for?

The OSG spiral flute tap 5/16"-18 UNC is designed for threading blind holes in ferrous and non-ferrous materials. Its spiral flute design evacuates chips upward, making it ideal for general-purpose tapping in automotive, aerospace, and general manufacturing applications where chip clearance is critical.

What are the specifications of the OSG 2930808 tap?

This OSG tap has a 5/16"-18 UNC thread size, H3 / 2B-3B tolerance, 3 flutes, and a modified bottoming chamfer. It is a general-purpose spiral-flute tap suitable for threading blind holes. The manufacturer part number is 2930808.

Where to buy OSG taps in worldwide?

3G Electric supplies OSG taps worldwide. As a global industrial distributor, we handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time on the OSG spiral flute tap 2930808.

How to select the correct OSG tap for blind holes?

For blind holes, choose a spiral flute tap like the OSG 2930808 to evacuate chips upward. Ensure the thread size (5/16"-18 UNC), tolerance (H3 / 2B-3B), and chamfer type (modified bottoming) match your application. Consult OSG's technical data for material-specific 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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