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OSG Spiral Flute Tap: 5/16"-32 UNEF, H3 / 2B-3B, 3 Flute - Spiral-Flute Taps for Steel & Stainless Steel
OSGSpiral-Flute Taps for Steel & Stainless Steel

OSG Spiral Flute Tap: 5/16"-32 UNEF, H3 / 2B-3B, 3 Flute

The OSG Spiral Flute Tap (5/16"-32 UNEF, MPN 1650505808) is a spiral-flute tap for steel and stainless steel, featuring an H3 / 2B-3B tolerance, 3 flutes, and a modified bottoming chamfer. 3G Electric interprets your…

SKU 3G-OTH-218871

Brand
OSG
Item
Spiral Flute Tap: 5/16"-32 UNEF, H3 / 2B-3B, 3 Flute
Category
Spiral-Flute Taps for Steel & Stainless Steel
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Technical Specifications

OSG
Manufacturer Part Number
1650505808
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"-32 UNEF, MPN 1650505808) is a spiral-flute tap for steel and stainless steel, featuring an H3 / 2B-3B tolerance, 3 flutes, and a modified bottoming chamfer. 3G Electric interprets your demand for this precision threading tool, sources it from OSG, and supports your application with specialist expertise across 14 industrial departments.

Frequently Asked Questions

What is the OSG spiral flute tap 5/16-32 UNEF used for?

This OSG spiral flute tap is designed for threading blind holes in steel and stainless steel. The spiral flute design evacuates chips upward, preventing clogging. The modified bottoming chamfer allows threading close to the bottom of the hole, making it ideal for precision applications in automotive, aerospace, and general manufacturing.

What are the specifications of the OSG spiral flute tap 5/16-32 UNEF?

This tap has a 5/16-32 UNEF thread size, H3 / 2B-3B tolerance, 3 flutes, and a modified bottoming chamfer. The OSG part number is 1650505808. It is designed for threading blind holes in steel and stainless steel, with the spiral flute design aiding chip evacuation.

Where to buy the OSG spiral flute tap 5/16-32 UNEF worldwide?

You can source the OSG spiral flute tap 5/16-32 UNEF from 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; we supply genuine OSG tooling to procurement teams and engineers globally.

How to select the correct OSG spiral flute tap for steel?

For threading blind holes in steel, choose a spiral flute tap with a modified bottoming chamfer, like this OSG 5/16-32 UNEF tap. Ensure the thread tolerance (H3 / 2B-3B) matches your required fit. Use appropriate cutting fluid for steel and select a tap with sufficient flute count for chip evacuation. OSG taps are engineered for consistent performance in production environments.

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 spiral-flute taps for steel & stainless steel. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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